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17

Using the MIH

5 

Using the MIH

5.1 

Unlocking the head

Both A and B axes are unlocked by a single turn of the thumbwheel 
in a counter-clockwise direction. The locked (key) symbol on the LCD 
will disappear. Probes/extensions longer than 150 mm should be 
supported by hand when locking or unlocking the head.

5.2 

Locking the head

Refer to fi gure 7 on page 18.

To lock the head correctly after positioning, support the probe (and 
extension, if fi tted) and turn the thumbwheel clockwise until a positive 
“click” is felt. A correct “lock-up” is confi rmed by the appearance of 
the key symbol on the LCD. To ensure repeatability, it is important 
to simply support the probe/extension during lock-up and NOT to 
constrain it.

NOTE:  

Do not leave the head unused in an unlocked position as this 

will shorten battery life.

5.3 

Positioning the head

Refer to fi gure 8 on page 19.

Rotation of each axis is achieved against a built-in kinematic 
mechanism. This provides the user with discreet 7.5° incremental 
positions so that the head cannot be locked in a non-repeatable 
position.

Summary of Contents for MIH

Page 1: ...User s guide H 1000 5200 08 A MIH ...

Page 2: ...e effort has been made to ensure that the contents of this document are free from inaccuracies and omissions However Renishaw makes no warranties with respect to the contents of this document and specifically disclaims any implied warranties Renishaw reserves the right to make changes to this document and to the product described herein without obligation to notify any person of such changes Trade...

Page 3: ...1 MIH user s guide ...

Page 4: ...ay cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case you will be required to correct the interference at your own expense Information to user FCC Section 15 21 The user is cautioned that any changes or modifications not expressly approved by Renishaw plc or authorised representative could void ...

Page 5: ...nishaw documentation Prior consent must be obtained from Renishaw if non Renishaw equipment e g interfaces and or cabling is to be used or substituted for Renishaw equipment Failure to comply with this will invalidate the Renishaw warranty Claims under warranty must be made from authorised service centres only which may be advised by the supplier or distributor Patents The features of Renishaw s m...

Page 6: ...4 This page intentionally left blank ...

Page 7: ...llation 14 4 1 Fitting the battery 14 4 2 Fitting the probe 14 4 3 Connection 15 4 4 Quill mounting 15 5 Using the MIH 17 5 1 Unlocking the head 17 5 2 Locking the head 17 5 3 Positioning the head 17 6 The LCD software facility 20 6 1 Introduction 20 6 1 1 Datum mode 20 6 1 2 Simple mode 20 6 1 3 Memory mode 21 6 1 4 Sequence mode 21 6 1 5 Conserving battery life 22 ...

Page 8: ...f button operation 42 8 Accessories 45 8 1 MAPS manual autojoint probe stand 45 8 2 Autojoint extensions adaptors 46 8 3 Shanks 47 8 4 AM1 adjustment module 47 9 Dimensions 48 11 Electrical specification 50 11 1 Battery life 50 12 Troubleshooting 51 13 MIH self test 54 13 1 LCD test 54 13 3 Battery test 56 14 Maintenance 57 ...

Page 9: ...stylus tip The current position is shown on the integral liquid crystal display LCD and is constantly updated during moves The programmable memory facility allows pre datumed positions to be stored in a memory within the head Direction arrows shown on the LCD take the user back to any one of 20 memorised positions which can be arranged in any order to suit a particular inspection sequence The sequ...

Page 10: ...epeatable to 1 µm 0 00004 in 2σ 720 selectable positions LCD display Programmable memory function Simple operation Compact size Renishaw autojoint probe mounting No special installation required Measured at 67 mm 2 64 in from autojoint TP6A probe with 21 mm 0 83 in stylus ...

Page 11: ...on software and will avoid false triggers DO change the battery when low battery indicator is ON DO reposition the head by moving only one axis at a time to ensure best practise DO unlock and relock the head after a probe change DO NOT rotate the head axes by holding the probe stylus DO NOT move the CMM by holding the head DO NOT attempt to use a probe whilst the head is unlocked DO NOT leave the ...

Page 12: ...D display 4 Probe status LED 5 LCD memory programming buttons 6 Probe autojoint lock unlock access window 7 Renishaw autojoint probe mounting recessed into A axis swivel 8 A axis zero position markers 9 B axis zero position markers 3 2 MIH back Refer to figure 2 opposite 1 Battery housing 2 5 pin DIN connector 3 Serial number ...

Page 13: ...11 Major components Figure 1 MIH front Figure 2 MIH rear 1 2 5 6 8 7 9 4 3 A axis B axis 1 2 3 ...

Page 14: ... 3 opposite 1 A axis positional data 0 to 105 2 B axis positional data 180 to 180 3 Low battery indicator 4 Head locked symbol 5 Rotation direction arrows 6 Position confirmation symbol 7 Sequence store indicator 8 Memory mode indicator 9 Memory number ...

Page 15: ...13 Major components Figure 3 LCD display 1 2 3 4 5 6 7 8 9 ...

Page 16: ...ive end first 5 Close door and secure retaining screw do not overtighten 6 Reset datum See Datum mode section 6 2 NOTE Incorrect insertion of the battery will not cause damage to the MIH 4 2 Fitting the probe Refer to figure 5 on page 16 1 Offer up the female autojoint with key slot facing as shown 2 Using an S10 autojoint key insert into access hole and locate blade in key slot 3 Rotate clockwise...

Page 17: ...nections 1 Head LED cathode 2 Ground 3 Head LED anode 4 Probe circuit 5 Probe circuit 4 4 Quill mounting Refer to figure 6 on page 16 Ensure that the head is securely mounted onto the CMM quill Any rotational movement occurring during use will result in a loss of repeatability of positional data CAUTION Always fit mounting shanks with the screws supplied M3 x 5 mm 0 20 in long The use of incorrect...

Page 18: ...16 Installation Figure 6 Figure 4 Figure 5 ...

Page 19: ...xtension if fitted and turn the thumbwheel clockwise until a positive click is felt A correct lock up is confirmed by the appearance of the key symbol on the LCD To ensure repeatability it is important to simply support the probe extension during lock up and NOT to constrain it NOTE Do not leave the head unused in an unlocked position as this will shorten battery life 5 3 Positioning the head Refe...

Page 20: ...y holding the probe or extension body as close to the head as possible and rotating until the required position is reached To ensure maximum repeatability each axis should be moved separately and should not be moved beyond overtravel positions CAUTION Do not change axis positions by holding the stylus as this will cause damage to the probe Figure 7 ...

Page 21: ...19 Using the MIH Figure 8 ...

Page 22: ...n presses and or time out periods of non use The locked symbol and low battery indicator function in all modes 6 1 1 Datum mode This mode has automatic entry when the battery is first fitted or replaced Datum mode requires the user to set the A and B axis position detectors to zero and must be completed successfully before the LCD can be used Datum mode may also be automatically entered if an erro...

Page 23: ...rection arrows on lock up Once the correct position is reached the arrows disappear and the head position confirmation symbol is shown Exit from memory mode will occur after a 10 second period of inactivity and the head will revert to simple mode A simple button press will return the user to memory mode See section 6 4 Memory mode in this manual for step by step instructions 6 1 4 Sequence mode Se...

Page 24: ...l return to its exact display before the 20 second time out upon lock up Rotating either axis whilst the LCD is in this powered down state will return the user to datum mode upon lock up see section 6 2 Datum mode This function will automatically operate if the head is left unlocked in any mode Stored memories and sequences remain unaffected by this function NOTE Do not leave the head unused in an...

Page 25: ...ead require datuming to a zero position before the LCD will display the correct A and B axis positions Datuming the head will also be required if a head datum error occurs during use Step 1 On entry into datum mode the LCD shows a datum error Unlock the head to reset datum Step 2 Rotate the A and B axes to their zero positions by aligning the zero position markers on both axes See section 3 Major ...

Page 26: ...he head is locked and unlocked The LCD software facility Step 3 Lock the head in this position and press the M and M buttons simultaneously to reset datum Step 5 Confirm that datum is correctly set by rotating each axis to its extreme positions and check that the position data on the LCD is correct A axis 0 to 105 plus overtravel B axis 180 plus overtravel ...

Page 27: ... in the A and B axis positions on the LCD will be live Example To use the MIH repeatably in positions A0 0 B0 0 and A105 0 B 180 0 see steps 1 3 below Step 1 Position the head to A0 0 B0 0 and lock in position Qualify the probe tip on your CMM in the normal manner The stored tip number should be noted together with the corresponding A and B axis positions on the MIH ...

Page 28: ...nd B axes until the required position is reached in this example A105 0 B 180 0 If overtravel in either axis occurs the O t symbol will appear in the axis data on the LCD Rotate the head to a valid position CAUTION Do not attempt to lock the head in an overtravel position ...

Page 29: ...lled from the CMM computer software ready to take points The head can be used in this way in up to 720 repeatable positions The number of positions which are to be used will be dictated by the workpiece requiring inspection but in some cases may be restricted by the number of storage positions for tip data available on your CMM software Please consult your CMM supplier for further details Attempti...

Page 30: ... position will show on the LCD screen upon lock up For further details on the use of the memory function see section 6 4 6 4 Memory mode When the battery is first fitted all memory locations are pre set to A0 0 B0 0 Pressing either the M or M button when in simple mode activates memory mode Step 1 In this example the head is positioned and locked at A0 0 B0 0 in simple mode Figure 10 ...

Page 31: ...he A and B axis position displays Because the head is at this position A0 0 B0 0 the direction arrows do not show only the position confirmation block shows If no button presses or head lock unlock occur within 10 seconds the LCD reverts to simple mode M1 now A0 0 B 0 0 Step 3 The head is unlocked repositioned and locked at A30 0 B30 0 in simple mode Press M to activate memory mode ...

Page 32: ...otated to achieve the position stored in M1 A0 0 B0 0 Step 5 To store A30 0 B30 0 in memory location M2 press M and the memory number will increment until M2 is reached Currently A0 0 B0 0 is stored in M2 and this is displayed together with the flashing direction arrows showing how this position can be reached Step 6 Pressing the M and M buttons simultaneously for longer than half a second will st...

Page 33: ... B axis displays and the direction arrows disappearing leaving only the confirmation block M2 now A30 0 B30 0 Step 7 To return the head to a previously memorised position M1 A0 0 B0 0 press M to decrement the memory number to M1 The direction arrows flash to show the direction moves required to reach that position and the axis data stored in M1 A0 0 B0 0 is displayed ...

Page 34: ... A and B axes in the directions indicated by the arrows until both arrows disappear and the position confirmation block comes on This confirms that the head is now in the position stored in the memory location indicated NOTE If you overshoot the target position chosen in either axis the direction arrows will lead you back to the required position ...

Page 35: ...ssed will cause the memory numbers to scroll up or down at the rate of two per second 6 5 Sequence mode When the battery is first inserted sequence step 1 contains the contents of memory 1 sequence step 2 contains the contents of memory 2 and so on up to sequence step 19 Step 20 contains an end of sequence marker E By pressing the M and M buttons simultaneously for 5 seconds when the head is locke...

Page 36: ...ent the sequence step numbers and the display will show the memory number stored in each sequence step Keeping the M or M buttons pressed will scroll through the sequence steps at the rate of two per second Step 3 Once the sequence step to be changed is chosen in this example step 3 currently containing memory number 3 pressing the M and M buttons simultaneously for between half a second and 3 sec...

Page 37: ...ed in sequence step 3 has been chosen in this example memory 5 pressing the M and M buttons simultaneously for between half a second and 3 seconds will store memory 5 in sequence step 3 This is confirmed by a store Sto message appearing on the display The M character disappears and the S character reappears confirming that the function of the M and M buttons has been transferred back to selecting ...

Page 38: ...n sequence step 4 Pressing the M button will increment the sequence to step 4 and the display will show the current contents as memory 4 Press and hold either the M or M button until the end of sequence marker E is displayed This is positioned between M19 and M1 Step 6 Press M and M simultaneously for between half a second and 3 seconds This changes the display The S character is replaced by the M...

Page 39: ...ftware facility Store E in sequence step 4 by pressing the M and M buttons simultaneously for between half a second and 3 seconds The sequence is now complete and is as follows Step 1 M1 Step 2 M2 Step 3 M5 Step 4 E ...

Page 40: ... sequence mode or using the sequence Pressing the M button or taking no action for 5 seconds will return the display to simple mode Pressing the M button enables use of the stored sequence NOTE To reset the sequence back to its original form step 1 containing memory 1 step 2 containing memory 2 etc simply place the end of sequence marker E in sequence step 1 during sequence editing ...

Page 41: ...M button from the USE Ed display or the M button from the End USE display Either of these actions will automatically start the sequence at step 1 The memory contents of sequence step 1 are displayed and the flashing direction arrows indicate the direction in which each axis must be rotated to achieve the position stored in sequence step 1 If the head is already in this position the position confir...

Page 42: ...tep 3 and its memory contents along with the position confirmation block If the head is locked in an incorrect position flashing direction arrows will instruct the user to unlock and try again Step 2 Locking the head in this position returns the display to show the sequence step number and its contents The corresponding probe tip number can now be selected and points taken The LCD software facilit...

Page 43: ... reached the sequence will automatically loop back to the first step This will only occur if the end of sequence marker E has been correctly placed during sequence editing Step 5 Pressing the M and M buttons simultaneously for longer than 3 seconds will give the choice to either re use the sequence press M or end using sequence mode press M Pressing M will take the user back to step 1 in the seque...

Page 44: ...de M Increments memory number M Decrements memory number M held for long than 0 5 seconds Scrolls up memory numbers M held for longer than 0 5 seconds Scrolls down memory numbers M and M held for longer than 0 5 seconds Stores current position No action for longer than 10 seconds Simple mode entered Sequence mode Select sequence mode function M Edit sequence mode entered M Use sequence mode entere...

Page 45: ...econds Selects memory number routine M and M held for longer than 3 seconds Exits edit sequence mode Select memory number in sequence edit M Increments memory number M Decrements memory number M held for longer than 0 5 seconds Scrolls up memory numbers M held for longer than 0 5 seconds Scrolls down memory numbers M and M held for longer than 0 5 seconds Stores memory number in current sequence s...

Page 46: ...ld for longer than 0 5 seconds Scrolls up step numbers M held for longer than 0 5 seconds Scrolls down step numbers M and M held for less than 3 seconds No change M and M held for longer than 3 seconds Exits edit sequence mode Exit sequence mode M Use sequence mode entered M or No action for longer than 5 seconds Simple mode entered ...

Page 47: ...ted probe extension combinations As a complementary product to the MIH MAPS allows the user to manually insert or remove pre datumed probe extension set ups for protective storage or use with the MIH MAPS can be either wall mounted or bolted directly to the CMM table for easy access For further information on MAPS see user guide part number H 1000 5300 Figure 12 ...

Page 48: ...lising the patented Renishaw autojoint probing set ups can be simply locked onto the MIH without the need to requalify each time yielding maximum flexbility and valuable time saving Figure 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 AM1 2 MIH 3 PAA3 4 PAA2 5 PAA1 adaptor 6 PEM1 7 PEL3 8 PEL2 9 PEL1 10 TP2 11 TP20 12 TP6 13 TP6A 14 M2 3 adaptor 15 M2 thread styli 16 M3 thread styli ...

Page 49: ...the screws supplied M3 x 5 mm 0 20 in long The use of longer screws will cause serious internal damage to the head 8 4 AM1 adjustment module Refer to figure 15 below The AM1 is a compact adjustment module for accurately aligning the probe heads with the CMM axes and or the Renishaw autochange rack In addition an in built quick release bayonet mechanism allows the head to be removed for storage and...

Page 50: ...48 Dimensions 9 Dimensions Figure 16 Autojoint location plane 5 mm 0 19 in 62 mm 2 44 in 76 mm 3 0 in 102 mm 4 0 in Shank mounting face Axis of rotation A axis R 62 5 mm 2 46 in ...

Page 51: ...cing from theoretical position in each axis at the stylus tip 0 3 mm 0 012 in Total angular movement A axis 0 105 in 7 5 step 15 positions B axis 180 in 7 5 steps 48 positions Total number of positions 720 Support limit of head unlocked 150 mm 5 91 in using PAA2 and TP6 Maximum extension length 300 mm 11 81 in using PAA3 and TP6 Lock unlock mechanism Single thumbwheel rotation Weight 580 g 1 3 lb ...

Page 52: ...ide will correctly power the LCD overall battery life will be reduced and battery life beyond the low battery warning indicator will be significantly reduced CAUTION Care must be taken when disposing of lithium manganese batteries DO NOT INCINERATE 11 1 Battery life Typical battery life 10 minutes day unlock time Before low battery warning 40 weeks After low battery warning 11 days Battery life wi...

Page 53: ...up procedure incorrect with long extensions Incorrect LCD function Battery power low No LCD function No battery present or battery inserted incorrectly Unexpected software modes entered Buttons not pressed simultaneously Time out exceeded No probe signal and or no probe status LED Cabling faulty not connected Probe extension bars faulty Probe interface faulty not connected When inserting battery s...

Page 54: ...utojoint key Ensure maximum extension bar of 300 mm 11 81 in is not exceeded and extensions longer than 150 mm 5 91 in are supported on lock up If low battery indicator is shown replace battery If not head may be faulty see note above Ensure battery is present and is inserted correctly refer to section 4 Installation for correct procedure Ensure simultaneous operation when appropriate e g to enter...

Page 55: ...onnections Check probe extensions are working correctly by exchange elimination continuity check if faulty return to Renishaw service centre for repair Ensure correct connection of interface machine control Re insert battery ensuring buttons are not pressed or press both buttons simultaneously three times to enter datum mode ...

Page 56: ...her refit the battery or step through the function by pressing both M and M buttons three times to enter datum mode 13 1 LCD test Refer to figure 17 below This test cycles round the LCD displaying each segment in turn Pressing the M button will display all LCD segments simultaneously Pressing the M button will display the MIH software version number Press the M and M buttons simultaneously to tran...

Page 57: ...efer to figure 18 below The head should be locked during this test Any positional error within the A or B axis encoders will be detected and displayed in the self test Press M and M simultaneously to transfer to the battery test Figure 18 ...

Page 58: ...ttery test Refer to figure 19 below This function is used by Renishaw when setting the low battery indicator threshold To step through this function press the M and M buttons simultaneously to transfer to datum mode Figure 19 ...

Page 59: ...57 Maintenance 14 Maintenance The MIH contains no user serviceable parts The MIH may be cleaned by wiping with a dry lint free cloth ...

Page 60: ...58 ...

Page 61: ...n under Edge Gloucestershire GL12 8JR United Kingdom T 44 0 1453 524524 F 44 0 1453 524901 E uk renishaw com www renishaw com For worldwide contact details please visit our main website at www renishaw com contact H 1000 5200 08 A ...

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