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Laser Measurement System

HPI-3D

User

manual

Содержание HPI-3D

Страница 1: ...Laser Measurement System HPI 3D User manual...

Страница 2: ...www lasertex eu...

Страница 3: ...rement systems with data acquisition Laser technique Research and Development Company Ltd UL RADZIONKOWSKA 17 51 506 WROCLAW POLAND Tel fax 071 3466684 email lasertex lasertex com pl Laser Measurement...

Страница 4: ...gular optics 2 2 iii Wollaston optics 2 4 C HOW TO START 2 5 3 PREPARATIONS 3 1 A SOFTWARE INSTALLATION 3 1 B ELEMENTS OF THE LASER SYSTEM 3 9 C INTERFEROMETER SETUP FOR MEASUREMENT 3 12 D POWERING TH...

Страница 5: ...4 I BEAM ALIGNMENT OF ANGULAR OPTICS WITH BEAM BENDER 4 17 i Laser Head initially not aligned 4 17 ii Laser Head initially aligned 4 20 5 MEASUREMENTS POSITIONING 5 1 A GENERAL DESCRIPTION 5 1 i Posit...

Страница 6: ...NG MEASUREMENT 5 31 F REMARKS ON MEASUREMENTS AND ON DATA ANALYSIS 5 32 G MACHINE ERROR COMPENSATION 5 37 i Absolute and Incremental data formats 5 38 ii Siemens data format 5 39 iii Fanuc data format...

Страница 7: ...ncremental data formats 6 22 ii Siemens data format 6 23 iii Fanuc data format 6 24 7 MEASUREMENTS STRAIGHTNESS 7 1 A GENERAL DESCRIPTION 7 1 B MEASUREMENT SETUP ANGULAR OPTICS 7 1 i Principles 7 1 ii...

Страница 8: ...procedure 3D method preparations 7 35 vi Measurement procedure 3D method 7 35 8 MEASUREMENTS FLATNESS 8 1 A GENERAL DESCRIPTION 8 1 B MEASUREMENT SETUP 8 1 C SOFTWARE DESCRIPTION 8 4 D ALIGNMENT OF O...

Страница 9: ...ION 12 1 B MEASUREMENT SETUP 12 1 C SOFTWARE DESCRIPTION 12 4 D MEASUREMENT PROCEDURE 12 8 13 MEASUREMENTS DYNAMIC 13 1 A GENERAL DESCRIPTION 13 1 B MEASUREMENT SETUP 13 1 i Dynamic measurements of di...

Страница 10: ...or limits 14 29 ix Positioning points generation 14 30 x Configuration of Positioning measurement 14 31 xi Pull down menu Measurement 14 33 D MEASUREMENT PROCEDURE 14 34 i Rules of automatic positioni...

Страница 11: ...rror 18 6 iii Cosine error 18 7 iv Abbe error 18 8 v Laser stability error 18 9 vi Other errors 18 9 vii A summary of laser measurement system errors 18 10 19 TROUBLESHOOTING 19 1 20 TECHNICAL DATA 20...

Страница 12: ...BSI BS 4656 Part 16 British and PN 93 M55580 Polish Laser Measurement System HPI 3D is highly configurable device although already in its basic configuration it allows performing the complicated measu...

Страница 13: ...must not be put near strong magnetic fields The head should not be unscrewed from its base and if it is it may not be put on a heat sink e g thick metal plate The head must not be thrown or dropped Ke...

Страница 14: ...meet the following directives and standard s Directive 2006 95 EC Electrical Apparatus Low Voltage Directive EN 61010 1 2011 Directive 2006 42 EU Machinery Directive EN 60825 1 2007 Directive 2004 108...

Страница 15: ...f Operation chapter The Doppler shift phenomenon is used The basic measurement unit is the wavelength of the laser i e 632nm The functionality of the instrument depends on the type of used optical com...

Страница 16: ...ng of two polarizations Horizontal H and Vertical V The Reference element IL1 splits the beam into two parts The H polarized beam is reflected back to laser and the V polarized beam is directed into t...

Страница 17: ...s is the same when RK1 and IK1 are shifted linearly In this case no measured signal is detected by the laser head The laser detects movement only when the IK1 and RK1 are rotated against each other In...

Страница 18: ...tain angle between the beams The frequency of both beams is changed according to the Doppler Effect when the WP2 element is in motion The frequency change of both beams is the same when WP2 and WP2 ar...

Страница 19: ...polarization Beam Path 1 Beam Path 2 A B FIG 2 3 ILLUSTRATION OF THE PRINCIPLE OF OPERATION WOLLASTON OPTICS BEAMS RETURING TO THE LASER ARE IN THE PLANE OF THE DRAWING The Wollaston optics is mainly...

Страница 20: ...e from CD or from www lasertex eu LASER HEAD 2 Mount Laser Head and optical elements on the measured machine Connect power supply to the Laser Head LASER HEAD USB Bluetooth 3 Run HPI Software and conn...

Страница 21: ...QUICK START 2 7 www lasertex eu 2 LASER HEAD 4 Align optical path 5 Start measurements...

Страница 22: ...nstallation package is located on the USB memory stick that is included to the measurement system HPI_Software_Install application can be launched from the USB memory The installation process should s...

Страница 23: ...tion process necessary parameters have to be set by the user In the figure 3 2 there is shown a first windows that appears during installation It allows choosing the installation language FIG 3 2 INST...

Страница 24: ...PREPARATIONS 3 3 www lasertex eu 3 FIG 3 4 USER INFORMATION WINDOW FIG 3 5 PROGRAM DESTINATION FOLDER WINDOW...

Страница 25: ...PREPARATIONS 3 4 www lasertex eu 3 FIG 3 6 WINDOW APPEARING WHEN THE FOLDER NAME DOES NOT EXISTS IN THE CURRENT INSTALLATION PATH FIG 3 7 MENU START FOLDER SLECTION WINDOW...

Страница 26: ...PREPARATIONS 3 5 www lasertex eu 3 FIG 3 8 DESKTOP ICON SETUP WINDOW FIG 3 9 WINDOW WITH INSTALLATION INFORMATION...

Страница 27: ...PREPARATIONS 3 6 www lasertex eu 3 FIG 3 10 INSTALLATION WINDOW DURING DATA COPY OPERATION FIG 3 11 BDE BORLAND DATABASE ENVIRONMENT DESTINATION FOLDER WINDOW...

Страница 28: ...PREPARATIONS 3 7 www lasertex eu 3 FIG 3 12 FTDI DRIVER INSTALLATION FIG 3 13 INSTALLATION SUMMARY WINDOW...

Страница 29: ...THE NEW USB DEVICE IS FOUND FIG 3 15 MESSAGE APPEARING WHEN THE DRIVER FOR HPI 3D DEVICE IS INSTALLED The HPI Software application can be launched from the HPI Software folder located in Programs tab...

Страница 30: ...lements is configurable and its configuration is related to the required application Following items are included in the standard set for linear measurements 1 1 pcs Laser head 2 1 pcs Power Supply 3...

Страница 31: ...EPARATIONS 3 10 www lasertex eu 3 6 3 pcs Base temperature sensor 7 1 pcs Air temperature sensor 8 1 pcs Wireless strobe 9 2 pcs Holding block HB1 10 2 pcs Stainless rod SR1 11 2 pcs Magnetic holder U...

Страница 32: ...rage of the interferometer system FIG 3 18 THE SUITCASE FOR TRANSPORT AND STORAGE OF THE INTERFEROMETER SYSTEM Additional elements for angular measurements are 1 x Angular Interferometer IK1 1 x Angul...

Страница 33: ...B connection is faster thus it gives more possibilities in some measurements i e Vibration or Dynamic Before starting the measurements the Laser Head 1 should be placed on the Tripod stand 3 and conne...

Страница 34: ...they do require neither switching on off nor charging When the Laser Head is not powered they remain in power down mode Sensors can only wake up and start to measure when the Laser Head is powered by...

Страница 35: ...14 www lasertex eu 3 The Power Button is used for switching the laser on or off and for signalization of the internal state of the laser The meaning of the signaling of the Power Button is described i...

Страница 36: ...firmware is corrupted Firmware programming necessary Orange Green blinking slow Laser switched on Stabilization phase 1 Orange Green blinking fast Laser switched on Stabilization phase 2 Green blinkin...

Страница 37: ...E HPI 3D ii Starting software When the software starts a splash screen appears figure 3 21 Pressing F5 on the PC keyboard or the button marked Simulator causes the software to switch into simulation m...

Страница 38: ...right bottom part there is shown the interface over which the software is actually trying to obtain a connection see a red circle in the figure 3 22 After software installation by default the first tr...

Страница 39: ...described in details in following Chapters Because of abundance of measurement types offered by the HPI 3D some of the options are not visible and can be reached by using the buttons with arrows in t...

Страница 40: ...ted to the temperature of the laser During the heating up the system is ready for the alignment of the optical path see chapter 4 FIG 3 24 DISPLAY WINDOW On the Display screen there are a status bar a...

Страница 41: ...corner there are icons setting up a link to Microsoft Excel or OpenOffice Calc if installed This link allows registering measurement in Excel or Calc by each STROBE button press FIG 3 26 ENVIRONEMNTAL...

Страница 42: ...nt system of the measured machine is made of Setting the proper value of the expansion coefficient is very important to obtain the highest accuracy of the system Option User makes it possible to enter...

Страница 43: ...dicator adjust optical components to obtain satisfactorily beam strength then click on the field to reset the error Beam strength fine but not calibrated Beam path between IL1 and RL1 optical componen...

Страница 44: ...es one should Place the air temperature and humidity sensors THS on the machine in the vicinity of the laser beam place the sensors of the base temperature along the measured axis on the machine base...

Страница 45: ...PREPARATIONS 3 24 www lasertex eu 3 FIG 3 29 CONFIGURATION WINDOW METEO PANEL...

Страница 46: ...mode The time interval of the records could be programmed from the computer by setting a required value FIG 3 30 RECORDING DATA MODE WINDOW Pressing End Recording finishes the data recording The resul...

Страница 47: ...bigger than the single pass The setup consists of the laser head the flat mirror interferometer FMI and the flat mirror In order to obtain correct result of measurements with double pass flat mirror c...

Страница 48: ...PREPARATIONS 3 27 www lasertex eu 3 FIG 3 39 CONFIGURATION WINDOW INTERFEROMETER TYPR CHOICE...

Страница 49: ...ning on the detector in the Laser Head from the moving retroreflector may vary with the position of the retroreflector resulting in a cosine error see chapter 17 and or misalignment of the optical pat...

Страница 50: ...tool is the Electronic Beam Indicator showing if the beam returning to the laser is strong enough to make proper measurements For indicating the beam strength the physical Power Button on the laser h...

Страница 51: ...ve the optical components along the measurement axis and regulate the position of the laser head so the beam always returns to the laser use diaphragms Repeat previous point with the use of Electronic...

Страница 52: ...IG 4 3 ILUSTRATION OF THE FUNCTION LASER HEAD The mechanical elements of the tripod help in the adjustment process The tripod must be leveled and after that with the function Laser Head the position o...

Страница 53: ...position In this position optics is safe from getting dirty covering with dust and accidental damage during transportation The Diaphragms are also used on most available optical components see figure...

Страница 54: ...ion elements as shown in the figure 4 5 The elements are placed on the swivel head of the tripod figure 4 5a and 4 5b and on the base of the laser head figure 4 5c Elements placed on the tripod are in...

Страница 55: ...e the position of the measurement beam The exact meaning of the crosses depends on the type of used optical components The terms reference beam and measurement beam have sense only for linear optics I...

Страница 56: ...aser Head IL1 and RL1 on the measured machine LASER HEAD 2 Turn on the laser and align all elements along the measurement axis LASER HEAD 3 Move the RL1 very close to IL1 they can touch each other Set...

Страница 57: ...he position of the beam returning from IL1 should regulated by direct movement of the IL1 component LASER HEAD 6 Move the RL1 back to IL1 the components must not touch and check the quality of the bea...

Страница 58: ...achine IK1 RK1 RK1 IK1 LASER HEAD 2 Turn on the laser and align all elements along the measurement axis RK1 IK1 LASER HEAD 3 Move the RK1 very close to IK1 they can touch each other Set their initial...

Страница 59: ...ser REMARK If the beams do not overlap then it means that the IK1 is rotated against RK1 Check the roll of laser head against IK1 and RK1 it should be zero RK1 IK1 LASER HEAD 6 Move the RK1 back to IK...

Страница 60: ...Turn on the laser Switch diaphragms both on the WP2 and the laser head to the alignment position Insert the WP2 in the laser beam path so that the beam passes through the middle of both diaphragms of...

Страница 61: ...the top so that the reflected beam returns to the laser head LASER HEAD WP2 WRP2 6 Move the WRP2 back to WP2 not closer than 30 cm and check the quality of the beam path alignment Use available electr...

Страница 62: ...ertex eu 4 h Beam alignment of linear optics with angle etalon LASER HEAD 1 Mount Laser Head IL1 RL1 and RE3D on the measured machine R E 3 D LASER HEAD RE3D 2 Turn on the laser and align all elements...

Страница 63: ...IGNMENT 4 15 www lasertex eu 4 LASER HEAD RE3D 3 Move the RL1 very close to IL1 they can touch each other Set their initial position so the beam returns back to the laser LASER HEAD RE3D 4 Move RL1 fr...

Страница 64: ...the beam returning from IL1 should be regulated with mechanical components on the tripod REMARK 2 If the laser head is mounted directly on the machine then the position of the beam returning from IL1...

Страница 65: ...ment of angular optics with beam bender i Laser Head initially not aligned LASER HEAD IK1 RK1 ZK1 1 Mount Laser Head IK1 RK1 and ZK1 on the measured machine ZK1 RK1 IK1 LASER HEAD 2 Turn on the laser...

Страница 66: ...eu 4 ZK1 LASER HEAD RK1 IK1 RK1 3 Move the RK1 very close to IK1 they can touch each other Set their initial position and the position of ZK1 so the beam returns back to the laser ZK1 LASER HEAD RK1...

Страница 67: ...ossible to regulate the ZK1 in many situations it would be faster REMARK If the beams do not overlap then it means that the IK1 is rotated against RK1 Check the roll of laser head against IK1 and RK1...

Страница 68: ...1 LASER HEAD 1 Align all elements ZK1 IK1 RK1 along the new measurement axis DO NOT TOUCH the laser head ZK1 LASER HEAD RK1 IK1 RK1 2 Move the RK1 very close to IK1 they can touch each other Set their...

Страница 69: ...EAD RK1 IK1 4 By regulation of the ZK1 position align the beam path so that both beam overlap on the input of the laser DO NOT TOUCH the laser head REMARK If the beams do not overlap then it means tha...

Страница 70: ...tex eu 4 RK1 ZK1 LASER HEAD RK1 IK1 5 Move the RK1 back to IK1 the components must not touch and check the quality of the beam path alignment Use available electronic tools Beam Level Indicator and El...

Страница 71: ...rtical planes This 3D feature simplifies and significantly speeds up the process of machine geometry testing and improves measurement accuracy thanks to elimination of the cosine error i Positioning i...

Страница 72: ...be generated a special file for compensation of the machine control After uploading the file the machine positioning should be measured again to obtain the end results The end results can be stored o...

Страница 73: ...compensation table generation in a format best suited the corrected machine linear incremental Siemes HP Fanuc Loading G Code program into machine Downloading corrections into machine if necessary Pos...

Страница 74: ...e reverse i e RL1 can be stationary with IL1 being translated LASER HEAD IL1 RL1 FIG 5 2 OPTICAL PATH SET UP FOR POSITIONING MEASUREMENTS SCHEMATIC The distance L measured in the linear configuration...

Страница 75: ...recision of every machine is the temperature In the Figure 2 there is schematically shown a milling machine On the machine there is a work table with a workpiece There is also schematically shown the...

Страница 76: ...path the length of the non used scale part or the distance between the beginning of the scale and the Zero mark The HPI 3D is capable of automatic compensation of the thermal expandability of the Scal...

Страница 77: ...nts require optical elements IL1 and RL1 to be aligned along laser beam as shown in the figure 5 2 Each of the elements can be moved During positioning measurements the Abbe Dead Path and Cosine error...

Страница 78: ...d improper results Switch singular sensors can be performed in the Display menu by clicking the value fields of the T1 T2 or T3 sensors in the WiMeteo panel Positioning measurements can be performed n...

Страница 79: ...MEASUREMENTS POSITIONING 5 9 www lasertex eu 5 FIG 5 4 OPTICAL PATH SET UP FOR POSITIONING MEASUREMENTS IN Y AXIS FIG 5 5 OPTICAL PATH SET UP FOR POSITIONING MEASUREMENTS IN Z AXIS...

Страница 80: ...ig 5 7 The window consists of a pull down menu and four panels 1 Display panel presents information about current distance target distance and measurement signal level 2 Positioning plot panel 3 Posit...

Страница 81: ...measured machine This option is described in more details below in the Chapter Also later in the chapter there is described an option for switching between 1D and 3D positioning iii Positioning Plot P...

Страница 82: ...surement Values Panel In the Values Panel there are displayed numerical values of the positioning measurements Figure 5 11 These are the values from the current measurement series and these are shown...

Страница 83: ...he program Menu Case B appears during measurements The measurement can be stopped directly Stop or indirectly Menu After pressing the Menu button the software always asks if the measurement is to be s...

Страница 84: ...g a configuration of the positioning measurements the lower the state of the laser system In the first field of the upper line there is an information about the points capture method manual or automat...

Страница 85: ...rtant commands available in the File menu are options for generating CNC path and preparing compensation table vii CNC path generation CNC path generation options allows automatic preparation by the H...

Страница 86: ...im effective and pilgrim standard Axis the measured machine movement axis should be chosen X Y Z U V W A B C Feed Rate the maximum machine feed rate in the chosen axis during measurements can be modif...

Страница 87: ...me with the value in Configuration Positioning Cycles in series Points number sets the number of measurement points Base point the initial position of the machine in its own coordinate system Coordina...

Страница 88: ...f the compensation table for machine control system has to be selected from Data format drop down list Together with the data format additional parameters are configured The option is described in mor...

Страница 89: ...IG 5 15 POSITIONING PULL DOWN MENU EDIT FIG 5 16 MACHINE DATAWINDOW x Machine error limits In the Edit option the user can setup allowable error limits of the machine for different norms option Machin...

Страница 90: ...ar positioning measurements are compared with these limits see Fig 5 18 This option is especially useful when there are checked many machines of the same type and the same requirements on their accura...

Страница 91: ...MEASUREMENTS POSITIONING 5 21 www lasertex eu 5 FIG 5 18 MACHINE ERROR LIMITS COMPARATION PANEL xi Positioning points generation...

Страница 92: ...top in points defined in the Positioning points window as shown in the figure 5 19 Points can be entered manually or can be generated from the input parameters start position can be negative distance...

Страница 93: ...r of the software during point capture process There are four available methods for checking machine s positioning Linear Pendulum Pilgrim Standard and Pilgrim Effective buttons in Measurement method...

Страница 94: ...MEASUREMENTS POSITIONING 5 24 www lasertex eu 5 FIG 5 21 MACHINE MOVEMENT IN THE LINEAR MODE S STARTING POINT FIG 5 22 MACHINE MOVEMENT IN THE PENDULUM MODE S STARTING POINT...

Страница 95: ...ILGRIM EFFECTIVE MODE S STARTING POINT Measurement points can be either captured manually with keyboard space or Strobe button or captured automatically by the software For automatic capture parameter...

Страница 96: ...on at the first measurement point Correct target value if checked then the software confirms laser measured distance value of each captured point Option usable for non numeric machines Stop after each...

Страница 97: ...fter The measurement point value is rounded with tolerance set in Point tolerance For example if the Point tolerance is set to 1 0 mm and laser measures 50 11mm then a desired measurement point of 50...

Страница 98: ...if checked then the software does not expect the machine to make the backlash compensation movement from point S to point 1 in the figures 5 21 5 24 Automatic point capture program captures measuremen...

Страница 99: ...L DOWN MENU VIEW View menu is used to switch on or off a Deviation table and to switch on drawing on the graph points from All cycles active cycle is drawn using solid line but remaining cycles are il...

Страница 100: ...ed value and the button Menu allowing returning to the Main menu ii 1D and 3D measurements In the right upper corner of the main positioning window see figure 5 28 there is placed the button for choos...

Страница 101: ...itioning errors are calculated The target points can be automatically defined during the first cycle in the measurement or manually written to the list or calculated Target Points From List Points are...

Страница 102: ...1 0 mm If vibrations are too large and system does not capture points then the option Manual Capture should be switched on in the Measurement menu f Remarks on measurements and on data analysis Exami...

Страница 103: ...ING A FULL MEASUREMENT CYCLE Buttons Remove and Add can be used to remove or add the measurement cycle It is possible to change the measuring cycle in which accidental error is suspected Button Browse...

Страница 104: ...g window the measurement report can be generated If at least two series of measuring cycles are completed statistical calculations can be performed and the report can be generated In order to get the...

Страница 105: ...recalculation of the results Limit values for measured machine parameters are presented in this panel They are assigned to the machine that is chosen from Machine pull down list If the error value ex...

Страница 106: ...ed report can be simplified or extended The selection window is shown each time the Preview or Print buttons are pressed The simplified version consists of three pages the title page the results page...

Страница 107: ...t gives possibility of further analysis of obtained data in mathematical tools like Matlab Mathematica or Excel The HPI Software from the positioning results generates also the text compensation file...

Страница 108: ...d as a simple table with five columns figure 5 37 number of positioning point distance value in the positioning point error in forward direction error in reverse direction mean error In the case of th...

Страница 109: ...d column ii Siemens data format The Siemens data format file is usable in most commonly used machine control units produced by Siemens The choice is between types 828 and 840 For older control units t...

Страница 110: ...s usable in most commonly used machine control units produced by Fanuc The choice is between different types of Fanuc control units As shown in the figure 5 39 the format of the Fanuc file differs gre...

Страница 111: ...MEASUREMENTS POSITIONING 5 41 www lasertex eu 5...

Страница 112: ......

Страница 113: ...ion the user can obtain accurate and comprehensive results with ease and in a short time The Dynamic Positioning is in many ways similar to the classic Positioning i Positioning in brief In the Figure...

Страница 114: ...to the initial point In all points marked in the Figure 6 1 with circle the machine must stop for at least 2 seconds During the whole measurement cycle the feed rate of the machine MUST NOT be modifi...

Страница 115: ...MEASUREMENTS DYNAMIC POSITIONING 6 3 www lasertex eu 6 FIG 6 2 LINEAR POSITION ERROR CORRECTION PROCEDURE...

Страница 116: ...n also be reverse i e RL1 can be stationary with IL1 being translated LASER HEAD IL1 RL1 FIG 6 3 OPTICAL PATH SET UP FOR POSITIONING MEASUREMENTS SCHEMATIC The distance L measured in the linear config...

Страница 117: ...e precision of every machine is the temperature In the Figure 6 4 there is schematically shown a milling machine On the machine there is a work table with a workpiece There is also schematically shown...

Страница 118: ...deadpath the length of the non used scale part or the distance between the beginning of the scale and the Zero mark The HPI 3D is capable of automatic compensation of the thermal expandability of the...

Страница 119: ...rements require optical elements IL1 and RL1 to be aligned along laser beam as shown in the figure 6 3 Each of the elements can be moved During positioning measurements the Abbe Dead Path and Cosine e...

Страница 120: ...yield improper results Switch singular sensors can be performed in the Display menu by clicking the value fields of the T1 T2 or T3 sensors in the WiMeteo panel Positioning measurements can be perform...

Страница 121: ...EMENTS DYNAMIC POSITIONING 6 9 www lasertex eu 6 FIG 6 5 OPTICAL PATH SET UP FOR POSITIONING MEASUREMENTS IN Y AXIS FIG 6 6 OPTICAL PATH SET UP FOR POSITIONING MEASUREMENTS IN Z AXIS c Software descri...

Страница 122: ...y panel presents information about current distance target distance and measurement signal level 2 Positioning plot panel 3 Positioning results panel 4 Panel with control buttons and status informatio...

Страница 123: ...ion is described in more details below in the Chapter iii Positioning Plot Panel On the chart drawn in the Positioning Plot Panel block 2 in the Figure 6 8 there is shown information about the measure...

Страница 124: ...ontrol part of the Control Panel FIG 6 9 CONTROL PANEL DIFFERENT MODES CLARIFICATIONS IN TEXT Case A appears when there is no measurement in progress and no data were read from a file In this mode it...

Страница 125: ...own menu File The menu bar consists of following options File Edit Measurement View Help In the File menu figure 6 12 can be found commands for reading measured data from a file saving the data to a f...

Страница 126: ...d program can be viewed end edited The results can be saved to a text file or previewed and printed FIG 6 13 CNC PATH GENERATION WINDOW Following parameters in Software parameters panel should be conf...

Страница 127: ...les is chosen the better characterization of the machine is done but the longer the measurement process lasts The number of cycles should be the same with the value in Configuration Positioning Cycles...

Страница 128: ...described in more detail in the end of the Chapter FIG 6 14 COMPENSATION TABLE PREPARATION WINDOW viii Pull down menu Edit In the pull down menu option Edit there are options for setting measured mac...

Страница 129: ...ng measurement In the Dynamic positioning tab in the Configuration window the options of the linear positioning measurements Fig 6 16 can be set i e the path to the folder for storing measurement data...

Страница 130: ...c positioning looks as shown in the Figure 6 16 In the upper part of the window there are two digital displays and the gauge of measuring signal level On the upper display the measured value is shown...

Страница 131: ...system has to be entered After modification of these fields the measurement results is shown in the machine coordinate system Also the error compensation files are changed appropriately e Rules of au...

Страница 132: ...een of the computer after pressing the button Report is presented in the Fig 6 18 FIG 6 18 DYNAMIC POSITIONING REPORT WINDOW The positioning results are presented on the graph and in the Results panel...

Страница 133: ...ools like Matlab Mathematica or Excel The HPI Software from the positioning results generates also the text compensation file for the machine control figure 6 20 At this moment there are available fif...

Страница 134: ...e and Incremental In this case the data are formatted as a simple table with five columns figure 6 21 number of positioning point distance value in the positioning point error in forward direction err...

Страница 135: ...tion window for those formats is shown in the figure 6 21 The user can change the Error unit between m and mm and the Base point The base point value is added to all position values in the second colu...

Страница 136: ...ile differs greatly from the absolute incremental format The Siemens type file can be stored to a file and uploaded directly to the corrected machine with 828 or 840 drives It is possible to set prope...

Страница 137: ...different types of Fanuc control units As shown in the figure 6 23 the format of the Fanuc file differs greatly from the absolute incremental format The Fanuc type file can be stored to a file and upl...

Страница 138: ...MEASUREMENTS DYNAMIC POSITIONING 6 26 www lasertex eu 6...

Страница 139: ...nts like optical autocollimator Wollaston method is designed for movement in space measurements e g the movement of a machine table or working tool can be characterized 3D method is used for rapid est...

Страница 140: ...al elements altered then the frequency of both beams is changed according to the Doppler Effect The laser head does notice a movement only if there is a rotation of IK1 versus RK1 i e when there is di...

Страница 141: ...treated as a reference The meaning of the parameters is L base length s distance between beams on IK1 and RK1 elements x distance measured by the Laser Head angular rotation of RK1 element h differenc...

Страница 142: ...pplications is shown in the Figure 7 3 The RK1 mounted on a carriage is translated over the measured guide rail Every length of the carriage usually 100mm a measurement is performed Formulas 7 1 are t...

Страница 143: ...ery accurate measurements of small rotations if two conditions are met 1 measured angle is within 5 degrees 2 distance between RK1 and the laser head does not change more than a few centimeters The se...

Страница 144: ...rature sensor Angular straightness measurements require optical elements IK1 and RK1 to be aligned along laser beam as shown in the figure 7 6 Each of the elements can be moved During Angular straight...

Страница 145: ...S MEASUREMENTS IN X AXIS Angular straightness measurements can be performed not only along the laser beam as shown in figures 7 7 and 7 8 but also in directions perpendicular to the laser beam Such co...

Страница 146: ...both optical components should be switched into the alignment position The IK1 and RK1 should be set in such a way that the beam passes the centers of diaphragms After successful setup the diaphragms...

Страница 147: ...icular polarizations is split by the WP2 element into two beams The beams are leaving the WP2 at a certain angle and then after being reflected back by the reflector WRP2 are returning to the laser he...

Страница 148: ...ften denoted as 180 Y X FIG 7 12A WOLLASTON REFLECTOR WRP2 FRONT VIEW 180 Y X FIG 7 12B WOLLASTON REFLECTOR WRP2 TOP VIEW Unlike in the angular optics see previous part of this Chapter the distance be...

Страница 149: ...though it is possible to measure the straightness either with movement of the WP2 or WRP2 element but there are certain differences The WRP2 this element should be stationary during measurement i e sh...

Страница 150: ...od stand Air temperature sensor Base temperature sensor Wollaston straightness measurements require optical elements WP2 and WRP2 to be aligned along laser beam as shown in the figure 7 14 The beam al...

Страница 151: ...an be performed in two configurations horizontal X figure 7 15 and vertical Z figure 7 16 In configuration X only the straightness of path in X axis is measured The same situation is with Z setup In b...

Страница 152: ...MEASUREMENTS STRAIGHTNESS 7 14 www lasertex eu 7 FIG 7 16 OPTICAL PATH SET UP FOR WOLLASTON STRAIGHTNESS MEASUREMENTS IN Z AXIS...

Страница 153: ...STRAIGHTNESS MEASUREMENTS WITH LINEAR OPTICS The measured position is then used either for precise control of the laser beam path alignment or for the straightness squareness or parallelism measuremen...

Страница 154: ...m window then the results of the 3D measurements may become unusable In such situation either some shielding from the air movement or a fan forcing the air movement have to be used The problem with ai...

Страница 155: ...PATH SET UP FOR 3D STRAIGHTNESS MEASUREMENTS SCHEMATIC 3D straightness measurements can be performed not only along the laser beam as shown in figures 7 18 and 7 19 but also in directions perpendicul...

Страница 156: ...ENTS STRAIGHTNESS 7 18 www lasertex eu 7 FIG 7 20 OPTICAL PATH SET UP FOR 3D STRAIGHTNESS MEASUREMENTS IN Y AXIS FIG 7 21 OPTICAL PATH SET UP FOR 3D STRAIGHTNESS MEASUREMENTS IN Z AXIS e Software desc...

Страница 157: ...pull down menu and five panels 1 Display presents current distance and measurement signal level 2 Straightness Plot in the 3D mode there are visible plots for vertical and horizontal axis in the Angu...

Страница 158: ...of the input signal i e the beam strength and the current value measured by the laser Depending on the chosen measurement type the values are displayed in different units figures 7 24A B and C for an...

Страница 159: ...ues registered in Straightness Plot and Values Table Changing number of digits have no influence on the measurement FIG 7 25 DISPLAY PANEL AFTER 3D TYPE MESUREMENTS After the 3D measurements are finis...

Страница 160: ...surement looks differently fig 7 27 because simultaneously there are measured the distance between RL1 and IL1 shown in the Display Panel and the position of the RK1 in the axes perpendicular to the l...

Страница 161: ...splayed range is set automatically but it can be set also manually On the horizontal axis there can be displayed either the distance or measurement points numbers After the right mouse button click on...

Страница 162: ...the mouse pointer should be moved to the bottom right corner of the desired are The auxiliary red dashed lines as shown in the Figure 7 29 should appear Zooming out is done by moving the pressed left...

Страница 163: ...placed Fig 7 30 There are four options available Angular Wollaston 3D and Pitch Yaw The last mode is described in another Chapter of this document v Straightness Measurement Values Panel In the Value...

Страница 164: ...independently on the unit of the chart by clicking with the left mouse button on the distance column of the chart There are three possibilities see Figure 7 32 rounded values of the distance A true v...

Страница 165: ...es with the current measurement state In the Figure 7 33 there are shown various appearances of the control part of the Control Panel Case A appears when there is no measurement in progress and no dat...

Страница 166: ...ries measured then it is possible to repeat only one series Repeat or to start completely new measurements New vii Straightness pull down menus Viewed graph can be printed or saved to a file Those com...

Страница 167: ...table raw data are shown for analysis export and print Base length angular retro reflector RK1 base length can be set default is 100mm the option available also in Configuration Parameters Configurati...

Страница 168: ...er cycles then set in this parameter 5 3D averaging time as the 3D straightness measurement is an amplitude type measurement thus depending on the measurement condition the device requires certain tim...

Страница 169: ...ield on the straightness charts viii Reports Measurement report can also be generated from obtained data either by pressing Print or Preview on the measurement analysis window fig 7 39 The report can...

Страница 170: ...art button During the measurement points are collected by the software and the straightness graph is constantly updated The measurement is finished by pressing the Stop button The straightness measure...

Страница 171: ...the distance between points should be marked on the leading ruler or on the examined surface before the measurement begins It is recommended to use the ruler with the scale see Figure 7 42 During the...

Страница 172: ...ent method Angular 4 Choose whether the points are to be captured manually or automatically 5 Press Start button 6 Choose the right optical configuration 7 Wait for the program to capture the first po...

Страница 173: ...ure the first point in time capture mode or capture the point manually 7 Move the WP2 by the distance set in the Edit Base length option default 100mm and wait on the next point capture 8 Continue the...

Страница 174: ...ure the first point in time capture mode or capture the point manually 7 Move the IL1 or the RL1 by the distance set in the Edit Base length option default 100mm and wait on the next point capture 8 C...

Страница 175: ...ce flatness the measurement of angular straightness in eight axes is necessary From obtained axes straightness data a flatness map is calculated and drawn fig 8 1 b Measurement Setup For flatness meas...

Страница 176: ...0 Error m 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1 000 1 050 1 100 1 150 1 200 1 250 1 300 1 350 1 400 mm 600 500 400 300 200 100 0 FIG 8 1 FLATNESS MAP OF AN EXE...

Страница 177: ...with the use of one or two beam benders with constant position of the laser head or by moving the position of the laser head In both cases realignment of the IK1 and RK1 components is required It is r...

Страница 178: ...sured in the Flatness option chosen from the Main Menu The HPI Software program window looks like it is shown in the Fig 8 5 The Flatness Measurement Summary window consists of three main parts Displa...

Страница 179: ...that is launched by the Measurement button from Flatness Summary window The window as shown in the figure 8 6 appears In this window it is also possible to change the measured axis and analyze the str...

Страница 180: ...measurement in the form of the Report Preview or Print button The graph can be printed or saved to a file It can be chosen from the File menu i e Save Save as Print see figure 8 7 FIG 8 7 FLATNESS PUL...

Страница 181: ...asic form where only the plot of the measured values is shown or in the extended version which contains tables with measured data It is also possible to copy the straightness graph to the clipboard an...

Страница 182: ...flatness calculation For Grid method the number of vertical and horizontal axes can be set from 3 to 8 d Alignment of optics for the flatness measurements The flatness measurement consists of the stra...

Страница 183: ...h the directions pointed by arrows on the schematic graph on the main screen of flatness measurement Fig 8 10 Below there is described the procedure of flatness measurements in the constant laser head...

Страница 184: ...S 3 6 AND 8 iii Optical path alignment of the axes 5 and 7 During flatness measurements of the axes 5 and 7 two beam directing mirrors ZK1 are used The way of using them is shown on Figure 8 12 The al...

Страница 185: ...urements of the axis 4 two beam directing mirrors ZK1 are used The difference is that the angle of the second mirror usually differs from 45 The alignment of the axis 4 is shown in the Figure 8 13 In...

Страница 186: ...ware and select Flatness option 3 Press Measurement button on the Flatness summary screen 4 Choose the proper axis on the axis choice chart and press Start New or Repeat button 5 Move the RK1 by the d...

Страница 187: ...should be selected The measurement begins by pressing Start New Repeat The point can be captured by pressing Space key clicking the Point capture button or pressing the remote Strobe button When the l...

Страница 188: ......

Страница 189: ...sured errors are known in the literature as pitch and yaw errors Pitch Yaw option is very similar to the Angular Straightness option which is described in another Chapter of this document The only dif...

Страница 190: ...s recommended Base temperature sensors do not have to be used LASER HEAD IK1 RK1 FIG 9 1 OPTICAL PATH SET UP FOR PITCH YAW MEASUREMENTS SCHEMATIC FIG 9 2 OPTICAL PATH SET UP FOR PITCH YAW MEASUREMENTS...

Страница 191: ...MENTS IN Y AXIS FIG 9 4 OPTICAL PATH SET UP FOR PITCH YAW MEASUREMENTS IN Z AXIS c Software description Pitch and Yaw errors can be measured in the Pitch Yaw option chosen from the Main Menu The HPI 3...

Страница 192: ...s started the right point capture method from the Measurement menu should be chosen see figure 9 6 There are two methods available Time period point capture points are captured automatically by the so...

Страница 193: ...The measurement is finished by the Stop button FIG 9 7 PITCH YAW PULL DOWN MENU FILE Obtained results can be saved printed or exported menu File Before saving the file the program asks about changing...

Страница 194: ...rt can also be generated from obtained data either by pressing Print or Preview on the measurement analysis window fig 9 9 The report can be generated in the basic form where only the plot of the meas...

Страница 195: ...available from popup menu that appears after right click on the area of the graph Configuration of Pitch Yaw measurement option is available in the Configuration Straightness window There is performe...

Страница 196: ...h 2 Start the HPI 3D software and select Pitch Yaw option 3 Choose the desired point capture method 4 Press Start button and run the machine 5 In the manual mode capture points using the most appropri...

Страница 197: ...wo measurements with the use of a right angle etalon are necessary From obtained axes straightness data the squareness is calculated and drawn fig 10 1 b Measurement Setup The choice of optical elemen...

Страница 198: ...ht angle etalon REW For both methods the optional elements are similar USB cable Manual Strobe Magnetic holder UM2 Tripod stand Air temperature sensor Base temperature sensor Squareness measurements b...

Страница 199: ...configuration is shown in the Figure 10 2B The measurement of the axis straightness should be performed with the movement of the RL1 element RE3D LASER HEAD FIG 10 2B OPTICAL PATH SET UP FOR 3D SQUAR...

Страница 200: ...UREMENTS SQUARENESS 10 4 www lasertex eu 10 LASER HEAD WP2 REW WRP2 FIG 10 3A OPTICAL PATH SET UP FOR WOLLASTONE SQUARENESS MEASUREMENTS SCHEMATIC FOR FIRST AXIS RETURN BEAMS NOT DRAWN FOR FIGURE CLAR...

Страница 201: ...The laser head and the REW should also be not touched during both parts of the measurement During squareness measurements the usage of the air temperature sensor is recommended Base temperature sensor...

Страница 202: ...h buttons FIG 10 4 SQUARENESS MEASUREMENT SUMMARY WINDOW Measurement is started by the Measurement button and window shown in the figure 10 5 appears In this window it is possible to change the measur...

Страница 203: ...measurement in the form of the Report Preview or Print button The graph can be printed or saved to a file Those commands can be found in File menu i e Save Save as Print see figure 10 6 FIG 10 6 SQUAR...

Страница 204: ...ot of the measured values is shown or in the extended version which contains tables with measured data It is also possible to copy the straightness graph to the clipboard and then paste it for example...

Страница 205: ...nce that the Measurement methods used for squareness measurements are Wollaston or 3D d Alignment of optics for the squareness measurements The squareness measurement consists of the straightness meas...

Страница 206: ...axis a different set of optical components is used and the alignment of the optical path is performed in a slightly different way The measurements have to be performed without changing the position of...

Страница 207: ...ath should be adjusted see figures 10 10 and 10 11 If the straightness of the first axis is measured the optical path should be realigned and the next axis should be selected in the software If both a...

Страница 208: ...be chosen for comparison In order to make the measurement in the manual capture mode the Measurement Manual point capture should be selected The measurement begins by pressing Start New Repeat Measure...

Страница 209: ...asurements with the use of a right angle etalon are necessary From obtained axes straightness data the parallelism is calculated and drawn fig 11 1 b Measurement Setup The choice of optical elements n...

Страница 210: ...Wollaston type measurement the necessary components are Laser Head Power Supply Wollaston prism WP2 Wollaston retro reflector WRP2 Right angle etalon REW For both methods the optional elements are si...

Страница 211: ...SUREMENTS SCHEMATIC FOR AXIS 1 Parallelism measurements based on the 3D method require optical elements IL1 and RL1 to be aligned along laser beam as shown in the figures 11 2A and 11 2B The element R...

Страница 212: ...PARALLELISM MEASUREMENTS SCHEMATIC FOR AXIS 2 Wollaston parallelism measurements require optical elements WP2 and WRP2 to be aligned along laser beam as shown in the figure 11 3 The element WP2 shoul...

Страница 213: ...se temperature sensors do not have to be used c Software description Parallelism is measured in the Parallelism option chosen from the Main Menu The HPI Software program window looks like it is shown...

Страница 214: ...arted by the Measurement button and window shown in the figure 11 5 appears In this window it is possible to change the measured axis and analyze the straightness results of each individual axis The a...

Страница 215: ...measurement in the form of the Report Preview or Print button The graph can be printed or saved to a file Those commands can be found in File menu i e Save Save as Print see figure 11 6 FIG 11 6 PARA...

Страница 216: ...ot of the measured values is shown or in the extended version which contains tables with measured data It is also possible to copy the straightness graph to the clipboard and then paste it for example...

Страница 217: ...ce that the Measurement methods used for parallelism measurements are Wollaston or 3D d Alignment of optics for the parallelism measurements The parallelism measurement consists of the straightness me...

Страница 218: ...t set of optical components is used and the alignment of the optical path is done in slightly different way The measurements have to be performed without changing the position of the laser head In bot...

Страница 219: ...s a measurement axis selection fig 11 9 and the optical path should be adjusted see figures 11 10 and 11 11 If the straightness of the first axis is measured the optical path should be realigned and t...

Страница 220: ...ose the proper axis on the axis choice chart and press Start New or Repeat button 5 Move the RL1 or WRP2 to the next measurement point 6 Continue measurements until all points on the path are measured...

Страница 221: ...pace key from the computer keyboard Point capture button on the panel or by the remote Strobe button If the last point is captured the Stop button should be pressed Measurement report can also be gene...

Страница 222: ......

Страница 223: ...m 0 to 500 Hz in Bluetooth mode and 0 to 50 kHz in USB mode The sensitivity of measurements is 100pm The System allows measuring vibration in different units in single shot and continuous mode The par...

Страница 224: ...ng vibration measurements the usage of the air temperature sensor is recommended Base temperature sensors do not have to be used LASER HEAD IL1 RL1 FIG 12 1 OPTICAL PATH SET UP FOR VIBRATION MEASUREME...

Страница 225: ...12 3 www lasertex eu 12 FIG 12 2 OPTICAL PATH SET UP FOR VIBRATION MEASUREMENTS IN X AXIS FIG 12 3 OPTICAL PATH SET UP FOR VIBRATION MEASUREMENTS IN Y AXIS FIG 12 4 OPTICAL PATH SET UP FOR VIBRATION...

Страница 226: ...Panel with buttons FIG 12 5 VIBRATION MEASUREMENT WINDOW Before starting the measurements the options located in the right panel should be set according to the current requirements Radio buttons enab...

Страница 227: ...located in the bottom right part of the window The results can be saved printed or exported menu File FIG 12 6 VIBRATION PULL DOWN MENU FILE Before saving the file the program asks about changing mach...

Страница 228: ...om obtained data either by pressing Print or Preview on the measurement analysis window fig 12 8 The report can be generated in the basic form where only the plots of the measured values and calculate...

Страница 229: ...WINDOW FIG 12 9 VIBRATION REPORT PREVIEW WINDOW PAGE 1 It is also possible to copy the straightness graph to the clipboard and then paste it for example to a Word editor document Copy to clipboard com...

Страница 230: ...measurement report To obtain correct results a point where the retro reflector is attached to the machine has to be carefully chosen If the point is chosen improperly instead of a sought frequency f a...

Страница 231: ...ATION 12 9 www lasertex eu 12 Laser Retroreflector RL1 Interferometer IL1 Retroreflector RL1 Interferometer IL1 Laser Vibrations important Vibrations not important A B FIG 12 11 VIBRATION MEASUREMENT...

Страница 232: ......

Страница 233: ...s 100pm Dynamic measurements are performed with the use of linear optics angular or Wollaston optics The System enables to perform dynamic measurement of distance velocity acceleration angle or straig...

Страница 234: ...al elements i e IL1 and RL1 During dynamic measurements the usage of the air temperature sensor is recommended Base temperature sensors do not have to be used LASER HEAD IL1 RL1 FIG 13 1 OPTICAL PATH...

Страница 235: ...gurations are shown in the figures 13 3 and 13 4 In those two configurations only the retro reflector RL1 can be moved FIG 13 3 OPTICAL PATH SET UP FOR LINEAR DYNAMIC MEASUREMENTS IN Y AXIS FIG 13 4 O...

Страница 236: ...ure sensor Dynamic measurements of angle require optical elements IK1 and RK1 to be aligned along laser beam as shown in the figure 13 5 Each of the elements can be moved During Angular straightness m...

Страница 237: ...onfigurations are shown in the figures 13 7 and 13 8 In those two configurations only the retro reflector RK1 can be moved FIG 13 6 OPTICAL PATH SET UP FOR ANGULAR DYNAMIC MEASUREMENTS IN X AXIS FIG 1...

Страница 238: ...ston optics should be used Necessary components are Laser Head Power Supply Wollaston prism WP2 Wollaston retro reflector WRP2 Optional elements are USB cable Manual Strobe Magnetic holder UM2 Tripod...

Страница 239: ...WRP2 FIG 13 9 OPTICAL PATH SET UP FOR DYNAMIC STRAIGHTNESS MEASUREMENTS SCHEMATIC FIG 13 10 OPTICAL PATH SET UP FOR DYNAMIC STRAIGHTNESS MEASUREMENTS IN X AXIS Dynamic straightness measurements can be...

Страница 240: ...in the Dynamic option chosen from the Main Menu The HPI 3D program window looks like it is shown in the Fig 13 12 The window consists of four main parts Display presents measurement signal level and...

Страница 241: ...ry then the measurements should be performed in the Velocity option The Measurement time is used for setting the total measurement time in seconds The Delay time option defines the time that will elap...

Страница 242: ...n Distance Velocity or Acceleration Angle or Straightness Wollaston FIG 13 13 DYNAMIC PULL DOWN MENU FILE Before saving the file the program asks about changing machine data option available from pull...

Страница 243: ...MACHINE DATA WINDOW It is also possible to copy the straightness graph to the clipboard and then paste it for example to a Word editor document Copy to clipboard command is available from popup menu...

Страница 244: ...1 Set up the laser on the measured machine and align optical path 2 Start the HPI 3D software and select Dynamic option 3 Configure Dynamic measurement 4 Press Start button and run the machine 5 Wait...

Страница 245: ...gether with the rotary encoder is capable of measuring any rotation angle with precision down to 1 arcsec The System allows measuring angle in different units The parameters of the measurement can be...

Страница 246: ...ULAR POSITIONING 14 2 www lasertex eu 14 USB cable Manual Strobe Magnetic holder UM2 Tripod stand Base temperature sensor LASER HEAD IK1 RK1 RE1 FIG 14 1 OPTICAL PATH SET UP FOR ROTARY MEASUREMENTS IN...

Страница 247: ...e is battery operated and connects to a PC computer over wireless Bluetooth interface High capacity Li on battery allows 24 hour operation with fast charging lasting less than 2 hours Battery is not r...

Страница 248: ...ment as shown in the Figure 14 5 element 3 Before measurements it is necessary to mount the whole kit depending on the mechanical configuration In the figures 14 3 and 14 4 there are shown necessary e...

Страница 249: ...FOR MILLNIG MACHINES MEASUREMENTS 1 CENTRAL UNIT 2 MOUNTING RING 3 RING FOR TURNING TABLES 4 SCREWS M4X8 5 TEMPORARY TOOL FOR FINDING TABLE CENTER FIG 14 4 CONFIGURATION OF WALLY FOR TURNING MACHINES...

Страница 250: ...ven by the rotary encoder RE1 The laser head has two functions during the measurements it controls and drives the whole process and at the same time measures the fine value of the angle in the range o...

Страница 251: ...xis rotation i e in so called in axis configuration If such mechanical configuration is not possible then the off axis setup has to be used with or without the additional off axis mounting depending o...

Страница 252: ...n the central unit has to be placed inside the ring rotated clockwise and fastened with both wings see figure 14 7 For measurements off the rotation axis there is necessary precision right angle set d...

Страница 253: ...MEASUREMENTS ANGULAR POSITIONING 14 9 www lasertex eu 14 FIG 14 7 ROTARY SYSTEM ASSEMBLED FOR TURING MACHINES MEASUREMENTS FIG 14 8 ROTARY SYSTEM ASSEMBLED FOR OFF AXIS MEASUREMENTS...

Страница 254: ...ry measurements elimination of error sources One of the main advantages of the laser based angle measurement systems is their low sensitivity to imperfect mounting of the measurement components Still...

Страница 255: ...ser head and the software should be started with Display Adjustment shown The position of the laser beam should be within the middle of the chart Then the axis under measurement should be rotated by 9...

Страница 256: ...erial number it can be read on the bottom steel ring of the central unit has to be chosen and Reconnect button should be presses After a short while the devices should be connected and a value in the...

Страница 257: ...aser or the link was broken green rotary encoder RE1 properly connected and linked The measurements are possible only when the link with encoder is set i e when the Wally link segment is green Setting...

Страница 258: ...only when there is no Wally link after pressing the button Wally rotates by the value set in the box The value is in degrees e g 20 2 means rotation by 20 2 degrees or 20 degrees and 12 minutes after...

Страница 259: ...the screen there should appear a window Angular Positioning as shown in the fig 14 13 FIG 14 13 ANGULAR POSITIONING WINDOW iv Pull down menu File The menu bar of this window contains following options...

Страница 260: ...tions allows automatic preparation by the HPI 3D software the G code program compatible with most CNC control systems The options of the path generation are set in the separate window as shown in the...

Страница 261: ...ent method see below Choice must be made between linear pendulum pilgrim effective and pilgrim standard Axis the measured machine movement axis should be chosen X Y Z U V W A B C Feed Rate the maximum...

Страница 262: ...n Report the number of measurement cycles should be not lower than three The more measurement cycles is chosen the better characterization of the machine is done but the longer the measurement process...

Страница 263: ...ed machine During machine movement the distance between optical elements IK1 nad RK1 mounted on the Wally should be constant This requires during table rotation instantaneous movement in two linear ax...

Страница 264: ...K1 element and the central unit The accuracy of this distance should be better than 10cm and does not have to kept very precisely After the machine is set the markings of the Main and Aux axes are to...

Страница 265: ...18 PHASE 2 OF THE OFF AXIS PATH GENERATION 3 Phase 3 Wally is to be rotated in the same direction like the machine As shown in the figure 14 19 in the Phase 3 there available two buttons with arrows P...

Страница 266: ...ITIONING 14 22 www lasertex eu 14 FIG 14 19 PHASE 3 OF THE OFF AXIS PATH GENERATION 4 Phase 4 Machine is to be moved in the linear Main axis until the crosses return to the position they were during P...

Страница 267: ...inear Aux axis until the distance between IK1 and RK1 becomes similar to the value during Phase 1 The required accuracy is 10 cm The absolute positions of the machine in the Main and Aux axes are to b...

Страница 268: ...MEASUREMENTS ANGULAR POSITIONING 14 24 www lasertex eu 14 FIG 14 21 PHASE 5 OF THE OFF AXIS PATH GENERATION FIG 14 22 PHASE 6 OF THE OFF AXIS PATH GENERATION...

Страница 269: ...8 Machine is to be moved in the linear Main axis until the crosses return to the position they were during Phase 1 9 Phase 9 Machine is to be moved in the linear Aux axis until the distance between I...

Страница 270: ...position 12 Phase 12 Machine is to be moved back in the linear Main axis to the start position 13 Phase 13 Machine is to be moved back in the linear Aux axis to the start position 14 Summary after the...

Страница 271: ...nu Edit option fig 14 26 there are commands for setting measured machine data Fig 14 27 defining machine error limits fig 14 28 previewing obtained positioning results editing positioning points when...

Страница 272: ...MEASUREMENTS ANGULAR POSITIONING 14 28 www lasertex eu 14 FIG 14 27 MACHINE DATAWINDOW...

Страница 273: ...able error limits of the machine for different norms option Machine error limits Fig 14 28 are configured The results of the angular positioning measurements are compared with these limits see Fig 14...

Страница 274: ...ment menu is active then the program expects the measured machine to stop in points defined in the Positioning points window as shown in the figure 14 30 Points can be entered manually or can be gener...

Страница 275: ...Positioning measurement In the Rotary encoder tab in the Configuration window the important parameters of the angular positioning measurements can be set Fig 14 31 There are four available methods fo...

Страница 276: ...where the maximal acceptable error level is set Above this limit the software generates a warning Options Point capture after and Vibrations are valid only when the automatic point capture is chosen...

Страница 277: ...c point capture program captures measurement points automatically using settings from Configuration In this mode the system itself recognizes the moment of stop the value of target point the direction...

Страница 278: ...to the Main menu In the bottom part of the window a status bar can be found which presents a configuration of the positioning measurements In the first field the information about the points capture m...

Страница 279: ...n Vibrations less than 3 Backlash compensation move of the machine should exceed 1 arcmin If vibrations are too large and system does not capture points the option Manual Capture should be switched on...

Страница 280: ...is possible Browse button opens data browsing window figure 14 33 where each data cycle can be viewed and analyzed FIG 14 35 DATA BROWSING WINDOW Both from main positioning window and from data browsi...

Страница 281: ...achine this error is displayed in red Under the graph there are buttons used for report Preview Print the report change of the graph Parameters and return to the previous window The axis scale can be...

Страница 282: ......

Страница 283: ...MEASUREMENTS ANGULAR POSITIONING 1 www lasertex eu 14...

Страница 284: ......

Страница 285: ...sure velocity in different units It can be configured in Configuration Velocity option The value of velocity is sampled every 40ms b Measurement Setup For velocity measurements linear optics should be...

Страница 286: ...e temperature sensors do not have to be used LASER HEAD IL1 RL1 FIG 15 1 OPTICAL PATH SET UP FOR VELOCITY MEASUREMENTS SCHEMATIC FIG 15 2 OPTICAL PATH SET UP FOR VELOCITY MEASUREMENTS IN X AXIS Veloci...

Страница 287: ...MEASUREMENTS VELOCITY 15 3 www lasertex eu 15 FIG 15 3 OPTICAL PATH SET UP FOR VELOCITY MEASUREMENTS IN Y AXIS FIG 15 4 OPTICAL PATH SET UP FOR VELOCITY MEASUREMENTS IN Z AXIS c Software description...

Страница 288: ...e a table containing consecutively numbered samples time elapsed from start and current velocity value Panel with buttons FIG 15 5 VELOCITY MEASUREMENT WINDOW Velocity measurement is launched by the S...

Страница 289: ...ELOCITY PULL DOWN MENU FILE Before saving the file the program asks about machine data option available from pull down menu Edit Machine data like machine type machine serial number measured axis or m...

Страница 290: ...an also be generated from obtained data either by pressing Print or Preview in the measurement analysis window fig 15 8 The report can be generated in the basic form where only the plot of the measure...

Страница 291: ...YSIS WINDOW FIG 15 9 VELOCITY REPORT PREVIEW WINDOW It is also possible to copy the velocity graph to the clipboard and then paste it for example to a Word editor document Copy to clipboard command is...

Страница 292: ...ELOCITY CONFIGURATION OPTIONS d Measurement procedure 1 Set up the laser on the measured machine and align optical path 2 Start the HPI 3D software and select Velocity option 3 Choose desired Velocity...

Страница 293: ...by the Extension Connector available at back of the laser as shown in the figure 16 1 With the use of signals available on this connector it is possible to use the laser as a standalone device The mai...

Страница 294: ...this connector is shown in the table 16 1 Pin number Function 1 24V 100mA Supply 2 7 Digital IO Software configurable Input Output 8 Digital Output Negative output of Differential B signal pair Digita...

Страница 295: ...ignal pair Sine Cosine Output 15 Analog Output Positive output of Differential Cosine signal pair Sine Cosine Output 16 Analog Output Positive output of Differential Sine signal pair Sine Cosine Outpu...

Страница 296: ...e Extension Cable EX1 figure 16 2 The Cable has on one end the appropriate miniature Hirose connector that should be inserted into the Extension Connector while on the other end there is a standard fe...

Страница 297: ...ifferential B signal pair Digital AquadB Output Negative output of Differential Sign signal pair Shift Sign Output 8 Digital Output Negative output of Differential A signal pair Digital AquadB Output...

Страница 298: ...Table 16 2 there shown the default pinout of the Extension Cable EX1 Comparing this table with Table 16 1 it can be seen that the only thing lacking on the EX1 are the power pins All signal pins visi...

Страница 299: ...MACHINE 16 7 www lasertex eu 16 LASER HEAD EX1 FIG 16 4 ENCODER SIGNAL GENERATION The output signals are in real time compensated versus environmental parameters change The process is shown schematic...

Страница 300: ...ate the corrections of the input signal The calculations are performed each 10 s The data from each sensor are received each one second The corrected distance value is then sent over USB or Bluetooth...

Страница 301: ...able negated A and negated B signals so a differential cable can be used The PERIOD of the signal as shown in the figure 16 6 is four times greater than the Output Standard set in the Configuration Fo...

Страница 302: ...tected sinA sinA t s U V Mid Voltage V FIG 16 8 OUTPUT ANALOG SIGNAL The output drivers deliver only positive voltages thus the Mid Voltage value of both output signals is important This voltage can b...

Страница 303: ...A Machine with analog inputs sinA sinB sinB sinA sinA sinB sinB Pin 7 Pin 10 Pin 8 Pin 9 EX1 Aout Machine with digital inputs Aout Bout Bout A A B B FIG 16 9 CONNECTING LASER HEAD TO A MACHINE Method...

Страница 304: ......

Страница 305: ...xample the language of the program can be changed after installation the program opens in the language of the installed Windows system Other panels are used to configure parameters of all types of mea...

Страница 306: ...1 CONFIGURATION WINDOW INTERFACE PANEL Panel WiMeteo The options available in the WiMeteo panel fig 17 2 are used to control the operation of the wireless module It is responsible for communication w...

Страница 307: ...new connection channel with WiMeteo Reconnect button In the Sensors part of the WiMeteo panel the user can register a new sensor The address of the registered sensor should be placed in the Address f...

Страница 308: ...oefficient is delivered with every WP2 element This field is password protected to avoid inadvertent modification of the parameter The password is 54321 Right angle prism Error is the parameter of the...

Страница 309: ...d by the HPI Software there is placed the logo Its path is set in the Logo path field The file should have bmp file format Panel General Parameters Base length Wollaston Coefficient and Right angle pr...

Страница 310: ...be modified in the Precision box For laboratory use the Extended precision should be chosen In this case all results are displayed with the highest possible precision For normal use the Normal option...

Страница 311: ...environmental parameters It is possible to change units of temperature and pressure Temperature unit and Pressure unit boxes FIG 17 5 CONFIGURATION WINDOW METEO PANEL Automatic measurements of selecte...

Страница 312: ...el there is visible the schematic drawing of the connector with the description of the functionality of the pins The functionality can be modified with the list buttons in the right part of the panel...

Страница 313: ...fines the medium value of the analog outputs as shown in the figure 16 6 Panel Statistics The data visible in the Statistics panel fig 17 7 are for information only Laser work time shows how long the...

Страница 314: ...irmware update The HPI 3D device is fully software defined which means that the digital processing of the signals is a very important part of the device All internal digital modules are available thro...

Страница 315: ...rt HPI Software 3 Enter Configuration Firmware update 4 Press Open button and choose the firmware file with x00 mcs zig or hex extension 5 Press Program button 6 Wait for the device to be programmed u...

Страница 316: ...CONFIGURATION 17 12 www lasertex eu 17 panel Flatness in Chapter 8 panel Vibrations in Chapter 12 panel Rotary Encoder in Chapter 14...

Страница 317: ...transparent mirror This mirror splits the light into two beams The first goes to the reference arm and reflects from the reflector Z1 the second goes to the measurement arm and reflects form the refle...

Страница 318: ...frequencies method In the homodyne method shown on figure 18 2 as a coherent source of light a linearly polarized laser is used If it is two mode laser i e it generates two wavelengths than one mode...

Страница 319: ...ly too high for an electronic counter The output beam of a Zeeman laser consists of two circularly polarized beams one polarized leftward and the second rightward A l 4 waveplate changes circular pola...

Страница 320: ...advantage of the heterodyne method is that two frequencies must be used for measurements while in the homodyne method the second may be used for measuring e g a second axis Zeeman laser Reference refl...

Страница 321: ...r and is described as n c v 3 Where n a refraction coefficient Normally the refraction coefficient n is a complex variable or even a tensor but for less accurate calculations it is simplified to a con...

Страница 322: ...r is needed and that the more sensors are used the better accuracy can be achieved Moreover the shape of the measured part of the machine may absorb a part of the expansion of the material or the part...

Страница 323: ...th only on the length L2 and will correct only this length The correction will not be made on a dead path L1 In this way the laser system will move the base point A dead path error is the more severe...

Страница 324: ...is used than the beam must be perpendicular to it If the machine changes its position form point A to point B than the beam stays perpendicular to the mirror but moves on its surface The distance mea...

Страница 325: ...he measurements FIG 18 6 AN ILLUSTRATION OF AN ABBE ERROR v Laser stability error As was already mentioned in laser measurements the laser wavelength instability changes directly the readout from the...

Страница 326: ...sion vii A summary of laser measurement system errors In order to show which of the errors influence the accuracy of a laser measurement system the most an exemplary calculation of errors on a 1m long...

Страница 327: ...x eu 18 FIG 18 8 A CALCULATION OF ERRORS FOR A LASER MEASUREMENT SYSTEM WITH THE COMPENSATION OF THE ENVIRONMENT 0 0 05 0 1 0 15 0 2 0 25 0 3 1 Positioning error um m Laser Environment Cosine Dead pat...

Страница 328: ......

Страница 329: ...wn in this chapter on the basis of block diagrams In each diagram the first block on the top names the problem that is dealt by the diagram Problems with connection over USB or Bluetooth The diagram c...

Страница 330: ...able Restart HPI Software Restart HPI Software Disconnect USB cable Restart HPI Software N Y Is the right device number chosen on the splash screen Is the right device number chosen on the splash scre...

Страница 331: ...start HPI Software Switch on wireless module in the PC Restart HPI Software N N Y Power off laser head Wait 10 second Power on laser head Restart HPI Software Power off laser head Wait 10 second Power...

Страница 332: ...non working sensors and check replace the battery Did the sensor diode blinked on during closing the top cap Wait 4 minutes Check the battery N Power off laser head Wait 10 second Power on laser head...

Страница 333: ...w Align properly optical path N In the HPI Software enter Main Menu and return to Display menu Does the laser measure OK Y Restart HPI Software N Does the laser measure OK Y Close HPI Software Power o...

Страница 334: ...es Close the diaphragm on the laser head or obstruct the beam before the laser Y Problems with back reflection of the laser beam Realign the optical path so that no reflection returns back to the lase...

Страница 335: ...r 100 mm base 0 2 Straightness measurement with 3D optics 0 6 m 0 1 m 10 10 L m Flatness 0 15 m Vertical range 2 mm 0 01 rad for 100 mm base 0 2 x L Straightness measurement with Wollaston prism 0 3 9...

Страница 336: ...e level 1 Vpp Signal resolution User defined from 40nm period to 200 m period in 40nm period step Maximal signal frequency 2 5 MHz d Laser Head outputs digital type 1 Signal type A quad B Voltage leve...

Страница 337: ...Shift Sign Output 9 Digital IO Negative output of Differential A signal pair Digital AquadB Output Negative output of Differential Module signal pair Shift Sign Output 10 Digital IO Positive output o...

Страница 338: ...ange 10 90 non condensing h Power Supply i PC interface Type 1 USB 2 0 Data rate 3125000 bps VCOM Type 2 Bluetooth 2 0 EDR Connection Point to Point pico net Frequency 2 400 to 2 4835 GHz Tx Power Max...

Страница 339: ...60 hPa accuracy 1 hPa Humidity Range 10 90 accuracy 10 Time constants Temperature 8 s pressure 2s humidity 20 s Dimension 50x55 mm Net weight 150 g Wireless material temperature compensation Manual Te...

Страница 340: ......

Страница 341: ...erature sensor 15 2 battery 3 15 3 22 Beam alignment 4 1 Beam Benders 8 2 Bluetooth connection 3 14 C CNC path generation 5 19 5 20 6 17 6 18 14 22 14 23 14 26 Compensation table 5 23 6 20 6 21 Config...

Страница 342: ...8 9 7 9 8 10 9 10 10 11 8 11 9 12 7 13 14 13 15 15 7 15 8 Machine error limits 5 25 14 36 Magnetic holder 3 11 5 8 6 9 7 7 7 16 8 2 9 2 10 3 11 3 12 2 13 2 13 6 13 8 14 2 15 2 MAIN MENU 3 20 3 21 5 1...

Страница 343: ...13 6 14 4 RL1 3 10 3 21 3 26 4 10 5 7 5 8 5 10 6 8 6 9 6 11 12 2 12 3 13 2 13 4 15 2 15 3 rotary encoder 3 26 14 1 14 2 14 4 14 9 14 18 14 19 17 3 S Sign 3 24 16 3 16 6 20 3 20 4 Simulator 3 18 17 2...

Страница 344: ...Velocity measurements 15 1 15 2 15 3 Velocity plot 15 5 Velocity value table 15 5 Vibration measurements 12 1 12 2 12 3 13 2 13 3 Vibrations 5 41 12 5 14 39 14 44 W WiMeteo 17 3 17 4 Wollaston 7 1 7...

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