Hyd-Mech PH 211 Use And Maintenance Manual Download

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10--1

Troubleshooting

This chapter describes the inspection and troubleshooting procedures for the

PH211

. Regular inspections and efficient maintenance are essential to ensure

your machine gives you a long, trouble---free service life. The chapter is divided

into two sections: the first being dedicated specifically to TROUBLESHOOTING

BLADE AND CUTTING PROBLEMS, while the second TROUBLESHOOT-

ING section concerns troubleshooting general machine operating faults. Taken

together they form a comprehensive troubleshooting guide which will enable you

to follow a methodical procedure for solving any problem.

Troubleshooting blade and cutting problems

PROBLEM

PROBABLE CAUSE

SOLUTION

Blade scored or scratched

Widia inserts chipped or worn

Replace

Widia inserts loose or tight

Adjust

Widia inserts dirty

Clean and re--adjust correctly

Cutting surfaces scored

Blade teeth worn

Replace blade

Head downstroke speed too

fast

Reduce downstroke speed

Cutting speed too slow

Increase cutting speed

Blade teeth too wide

Change for wider teeth

Free blade guide head too

far away

Move blade guide head clo-

ser so as to leave only that

part of the blade free which is

needed to effect the cut

Blade tension low

Reset tension to rated ten-

sion

Broken teeth on blade

Check and replace blade

Summary of Contents for PH 211

Page 1: ...EN YEAR OF MANUFACTURE ______________ PH 211 USE AND MAINTENANCE MANUAL ...

Page 2: ......

Page 3: ...c compatibility 3 9 Machine installation 4 1 Packaging and storage 4 1 Anchoring the machine 4 4 Minimum requirements 4 4 Check list 4 5 Balancing the cutting head 4 6 Connection to the power supply 4 6 Description of machine operation 5 1 Description of the control panel 5 1 Basic instructions for carrying out a cutting operation cycle 5 3 Manoeuvring the cutting head 5 3 Clamping the work piece ...

Page 4: ...larity 7 10 Orthogonality of the blade 7 11 Maintenance and choice of consumables 8 1 The role of the operator 8 1 Maintenance requirements 8 2 General maintenance 8 2 Daily 8 2 Weekly 8 2 Monthly 8 3 Maintenance of working parts 8 3 Consumable materials 8 3 Oil for transmission box 8 3 Oil for lubricant coolant fluid 8 3 Cutting speed and choice of tools 9 1 Cutting speed 9 1 Standard machine 9 1...

Page 5: ... sets 9 7 Alternating set 9 7 Blade selection table relating to cutting speed and downstroke speed 9 8 Classification of steels 9 9 Classification of steels 9 10 Troubleshooting 10 1 Troubleshooting blade and cutting problems 10 1 Troubleshooting machine faults 10 8 ...

Page 6: ......

Page 7: ...ed with the possibility of making inclined cuts from 0 to 60 left make this model the ideal solution for satisfying the wide strange of cutting needs of machine shops turneries structural steel shops and engineering workshops We congratulate our clients on having chosen this product which will give effective and faithful service for many years especially if the instructions contained in this use a...

Page 8: ...del serial number and year of manufacture of the machine must be quoted CUTTING SPEEDS 1st Slow Speed mt min 40 2nd Fast Speed mt min 80 BAND SAW Rated size mm 2085 x 20 x 0 9 Max min blade length mm 2075 2095 Blade height mm 20 Blade width mm 0 9 Band saw tension Kgs cm2 Lbs in2 2250 32000 When choosing the cutting tool if its dimensions do not correspond to those included in the Rated size secti...

Page 9: ...ns with shaft oil seal Conforming to CEI norms publication IEC 34 of 01 07 1985 Example of class F insulation in air cooled machines at an ambient tempera ture of 40 C according to CEI 2 3 and IEC 85 the allowable overtempera ture is 100 C where 100ٛC represents the allowable DT The machine is supplied with a 2 4 pole three phase motor giving 2 band saw speeds 1ª speed 4 poles 40 mt min 2ª speed 2...

Page 10: ...1 4 4 Use and maintenance manual PH211 Dimensions MACHINE INSTALLED Work table height mm 935 Weight Kg 180 1280 840 1600 PACKED WEIGHT Wooden cage and pallet Kg 70 Wooden pallet Kg 20 ...

Page 11: ... and their locations Cutting head The cutting head is the unit that cuts the material It consists of a cast iron head on which the following are mounted the band saw the blade guide components the blade tensioner components the transmission box and the spindle motor The cutting head is limited in its movements by the joint on the work table and its cutting stroke is manually guided by the operator...

Page 12: ...or by a pneumatic cylinder in the MA version optional Control Panel The control panel has a protection rating of IP 54 and contains the electrical equipment Access is gained by removing the screws fastening a safety panel while the operator s safety is guaranteed by a key operated safety switch designed to prevent any intentional interference with the unit In order to remove the panel from its mou...

Page 13: ...l the machine s controls The instructions warnings and accident prevention standards in this manual must be respected without question by all those concerned The following definitions are those provided for by EEC MACHINES DIRECTIVE 98 37 CE H Danger zone any zone in and or around a machine in which the presence of a person constitutes a risk for the safety and health of that person H Person expos...

Page 14: ... avoiding any blinding light concentrations Reference standard ISO 8995 89 Lighting in work environments CONNECTIONS Check that the power supply cables and pneumatic feed systems comply with the maximum machine absorption values listed in the Machine Specification tables replace if necessary EARTHING The installation of the earthing system must comply with the requirements set out in IEC STANDARD ...

Page 15: ...er supply to the machine before carrying out any maintenance work whatsoever including in the case of abnormal operation of the machine Before starting cutting operations support the material at both ends of the machine using the support arm standard or OPTIONAL acces sories such as the feed and discharge roller tables shown in the diagram below Before removing the devices supporting and moving th...

Page 16: ...hile it is cutting Do not use blades of different sizes to those recommended in the machi ne specifications When cutting very short pieces make sure that they are not dragged be hind the support shoulder where they could jam in the blade When working on the band saw wear gloves only when handling mate rials and for tool changing or adjustment operations Only perform one operation at a time and do ...

Page 17: ... EMC Electromagnetic Compatibility H EEC Directive No 73 23 known as Low voltage directive HEALTH AND SAFETY AT WORK H EEC Directive No 80 1107 83 477 86 188 88 188 88 642 for the protection of workers against risks caused by exposure to physical chemical and biological ag ents during working H EEC Directive No 89 391 and Special EEC Directives No 89 654 and No 89 655 for improvements in health an...

Page 18: ...troke end HB models only 5 1 4 3 2 6 Electrical equipment In accordance with Italian standard CEI 60204 1 April 1998 derived from European Standard EN 60204 1 publication IEC 204 1 1997 H Access to electrical control panel limited by screws and panel lock device allowing panel to be opened only after the electricity supply has been turned off H 24 Vac Control voltage for actuators in accordance wi...

Page 19: ...ushbutton the actuator must be rotated 45 After the emergency situ ation has been resolved the machine must be reset 2 Automatic thermal magnetic cutout switch with thermal magnetic relay the machine auto switch located on the control panel has two protection sys tems against voltage drops In the case of a voltage drop all electrical compo nents are disengaged the machine stops immediately and aut...

Page 20: ...hat actually fluctuating over the same period of time This calculation is made automatically by the integrator noise meter The measurements are taken every 60 seconds in order to obtain a stabilised value The reading stays on the display for a sufficient time to enable a reading to be taken by the operator Measurements are taken by holding the instrument at approximately 1 metre from the machine a...

Page 21: ...ent that is contaminated by disturbances of defined magnitude The following text contains a list of the applied standards and the results of the electromagnetic compatibility testing of machine model PH211 Test report no 170201 Emissions H CEI EN 61000 6 4 2002 Electromagnetic Compatibility EMC Generic stan dard regarding emissions Part 6 4 Industrial Environment H EN 55011 1999 Industrial scienti...

Page 22: ... m Result Enclosure 30 230 230 1000 40 47 Complies Immunity H CEI EN 61000 6 2 2000 Electromagnetic Compatibility EMC Generic stan dard on immunity Part 6 2 Industrial Environment The EUT is deemed to fulfil the immunity requirements without testing because it contains no electonic control circuitry ...

Page 23: ... following ways 1 on a pallet with straps and heat shrink plastic 2 on a pallet with straps heat shrink plastic and a wooden crate In both cases for correct balancing the machine must be handled using a fork lift truck inserting the tines at the points indicated by the arrows using the reference marks on the crate itself Before carrying out lifting operations make sure that the weight of the ma ch...

Page 24: ... wrapped must not be stacked two high and machines pallettized and crated must not be stacked three high To install the machine first remove the packing paying particular attention not to cut any electric wires or hydraulic hoses if necessary use pliers a hammer and a cutter Open crate in the illustrated order Attention Attention ...

Page 25: ...shrink covering 4 remove the straps 5 remove nails from pallet securing planks and remove planks 6 remove the front panel and insert fork tines 3 4 5 6 To locate the machine in the workplace the machine dimensions and necessary operator working space including the spaces laid down in safety standards must be taken into account ...

Page 26: ...n into account when positioning the machine BASE Ø 12 mm Ø 12 mm 667 5 mm Minimum requirements For the machine to function correctly the room in which it is to be installed must satisfy the following requirements H power supply voltage frequency refer to the values on the rating plate H temperature of machine location from 10 to 50 C H relative humidity not more than 90 H lighting not less than 50...

Page 27: ...n Blade cleaning brush n Electric control panel totally identifiable cabling stand by main switch with lockable panel closing device speed switch emergency device thermal mag netic overload cutout minimum voltage relay voltage drop protection 24 V low voltage plant n IP 55 handgrip n Adjustable stops at 0 and 60 left with clamping lever for in between angles n Head pivoting with pre loaded taper b...

Page 28: ...chines This requirement is fundamental for the good operation of the machine To connect the machine to the power supply proceed as follows connect the power supply cable of the machine to a plug which matches the socket to be used EN 60204 1 par 5 3 2 CONNECTION FOR 5 CORE WIRE SYSTEMS WITH NEUTRAL R L1 S L2 T L3 PE GND N NEUTRAL CONNECTION FOR 4 CORE WIRE SYSTEMS WITH NEUTRAL S L2 T L3 PE GND R L...

Page 29: ...e STAND BY LED lights up Check that the motor is rotating in the correct direction For this check the following operations must be carried out set the blade tension to 70 BAR make sure the cover is properly closed at the back of the cutting head there is a bayonet limiter for correct cover closure make sure that the machine is not in an emergency condition red mush room head pushbutton released se...

Page 30: ...the blade will start rotating Ensure that the blade moves in the correct direction as shown in the abo ve figure If it does not simply reverse two of the phase wires on the machine power supply input The sawing machine is now ready to start the work for which it was designed Chapter 5 provides a detailed description of the various functions of the machine and its operating cycles Attention ...

Page 31: ...ns We begin with a description of the pushbuttons and other components on the control panel Description of the control panel The components of the PH211 control panel are shown in the diagram below Each arrow has a number which corresponds to the descriptions that follow 3 2 1 4 5 5 ...

Page 32: ... 1 powers up the machine by resetting the minimum voltage relay and the blade motor thermal magnet cutout This device has three protection systems against power failure When there is a power failure the electrical devices are all shut down instantly shutting down the machine and preventing automatic restoring of power on power return A further function is to reset the thermal relay which protects ...

Page 33: ...the machine Also the grip on the head control lever enables the operator to achieve a firm grip in order to start up band saw rotation by pressing the micro switch start lever located in the handle itself Clamping the work piece in the vice In the basic version the work piece is clamped in the vice by rotating the opening closing handwheel in a clockwise anticlockwise direction as shown each time ...

Page 34: ...nal section of the workpiece so that only the part of the blade required to make the cut is actually exposed Position the workpiece on the work table in proximity to the blade downstro ke trajectory and clamp it in the vice loosen the ratchet lever on the sliding shaft of the front blade guide head the mobile front guide head must be positioned near to the material leaving the downstroke trajector...

Page 35: ... are correct for the job to be begun that the speed selected is right for the kind of piece to be cut that all protections are in place and correctly locked the level of lubricant coolant and that the electropump is activated that the blade downstroke speed and the cutting pressure are correct Manual operating cycle Sequence of operations for performing a cut power up the machine by pressing the r...

Page 36: ...ng the micro switch on the handgrip the downstroke speed of the head is manually con trolled by the operator The motor starts up and sets the blade in rotary motion the lubricant coolant pump starts up at the same time At the end of the cutting operation the head can be raised Remove the piece from the vice ...

Page 37: ...te rapid 0 45 and 60 cuts to the left and 45 cuts to the right Angled cuts 45 to the left slacken the turntable lock release lever rotate the head from left to right until it reaches the desired angle which is shown on the angle graduations on the turntable Always rotate the head when it is in the upper position to avoid blade collision with the moving jaw on the clamp Attention ...

Page 38: ...eft Slacken the turntable lock release lever pull the eccentric pin knob towards you 0 reference stop and rotate slightly to raise it swing the head from left to right until it is positioned at the required angle as indicated by the graduated scale on the turntable relock the turntable lock release lever make the cut in the required operating mode following the preliminary safety instructions set ...

Page 39: ... intended to help in identifying the location of the various compo nents making up the machine giving information useful in carrying out repair and maintenance operations This chapter will also enable the user to order replace ment parts with no risk of misunderstanding as all parts are given codes Standardised Wiring Diagrams single phase 6 ...

Page 40: ...6 2 34 Use and maintenance manual PH211 Standardised Wiring Diagrams HB single phase ...

Page 41: ...6 3 35 Diagrams exploded views and replace Standardised Wiring Diagrams three phase ...

Page 42: ...4 36 Use and maintenance manual PH211 Exploded views This part of the manual contains detailed exploded views of the machine which can help to gain a deeper knowledge of how it is made Body frame assembly ...

Page 43: ... TUBE 1 29 090 0271 HANDLE ASSEMBLY 1 30 010 4024 FIXED PLATE 1 31 010 1201 WASHER 2 32 010 1201 WASHER 2 33 010 1201 HEX SOCKET HEAD SCREW 2 34 022 0515 MICRO SWITCH BRACKET 1 35 031 2655 SCALE 1 36 010 1201 RIVET 4 39 031 2656 SCALE 1 40 022 0392 HOSE CLIP 4 41 010 1201 CROSS ROUND HEAD SCREW 4 55 022 0326 PLASTIC BUSHING 5 56 010 1201 HEX SOCKET HEAD SCREW 2 57 010 1201 WASHER 2 64 010 1201 HEX...

Page 44: ...6 6 38 Use and maintenance manual PH211 Motor assembly Handle assembly ...

Page 45: ...0769 REDUCER 2 4P 1 75 010 1201 SPRING WASHER 4 76 010 1201 HEX SOCKET HEAD SCREW 4 85 010 1201 HEX SOCKET HEAD SCREW 1 86 010 1201 WASHER 1 87 010 1201 ROUND HEAD KEY 1 88 010 2136 OUTPUT SHAFT 1 89 010 1201 ROUND HEAD KEY 1 90 025 0056 BEARING 1 NR Code Description Quantity 29 1 090 0271 HANDLE 1 29 2 090 0271 GASKET SERIES 1 29 3 090 0271 SPRING 1 29 4 090 0271 MICROSWITCH 1 29 5 090 0271 CYLIN...

Page 46: ...6 8 40 Use and maintenance manual PH211 Blade adjustable assembly rear Blade adjustable assembly front ...

Page 47: ...7 010 1698 BEARING SPACER 1 82 043 0655 VALVE 1 111 010 1201 ROUND HEAD SCREW 2 112 010 1201 WASHER 2 113 010 1201 WASHER 1 114 010 1201 ROUND HEAD SCREW 1 NR Code Description Quantity 22 010 1201 ROUND HEAD SCREW 2 23 010 1201 HEX SOCKET HEADLESS SCREW 4 25 010 2353 BLADE ADJUST STICK 1 27 034 1116 PLUM HANDLE 1 37 010 2140 BEARING SHAFT 1 38 010 2392 BLADE ADJUST FRONT 1 43 010 3336 ECCENTRIC GU...

Page 48: ...6 10 42 Use and maintenance manual PH211 Idler wheel and Drive wheel assembly Blade back cover assembly ...

Page 49: ... BEARING 1 96 001 6102 IDLER WHEEL 1 99 010 0363 NUT 1 101 010 6103 DRIVE WHEEL 1 102 010 1201 DRIVE SHAFT WASHER 1 103 010 1201 HEX HEAD SCREW 1 NR Code Description Quantity 100 031 0876 BLADE 1 104 016 0949 BLADE BACK COVER 1 105 034 1110 HEX SOCKET HEAD SCREW 4 106 010 1201 WASHER 4 ...

Page 50: ...6 12 44 Use and maintenance manual PH211 Control panel assembly ...

Page 51: ...10 1201 LOCK NET 2 202 010 1682 BOLT 2 208 031 5002 WARNING PASTER 1 209 016 0232 CONTROL BOX BASE 1 211 010 1201 HEX SOCKET HEAD SCREW 4 212 010 1201 SPRING WASHER 4 213 010 1201 WASHER 4 214 367 9133 LABLE FOR NAME PLATE 1 215 016 0715 CONTROL SWITCH ASSEMBLY 1 ...

Page 52: ...6 14 46 Use and maintenance manual PH211 Base assembly ...

Page 53: ...ER 6 220 010 1201 HEX SOCKET HEAD SCREW 6 221 013 0202 STAND 1 221 1 001 6107 SWIVEL ARM BASE 1 222 016 0193 FILTER 1 223 010 1201 CROSS ROUND HEAD SCREW 2 224 010 1201 HEX HEAD SCREW 2 225 010 1201 HEX NUT 2 227 010 1201 HEX HEAD SCREW 2 228 010 1201 SPRING WASHER 2 229 016 1246 FIXED PLATE 1 230 010 1201 ROUND HEAD SCREW 4 231 010 1201 HEX SOCKET HEAD SCREW 1 232 010 3463 NUT 1 233 001 6001 ADJU...

Page 54: ...6 16 48 Use and maintenance manual PH211 Vise assembly A Vise assembly B PH 211 ...

Page 55: ...4 010 1201 HEX SOCKET HEAD SCREW 1 190 010 0237 LEADSCREW A 1 191 010 1201 HEX SOCKET HEADLESS SCREW 1 192 010 1201 HEX NUT 1 193 010 1201 HEX SOCKET HEAD SCREW 2 NR Code Description Quantity 162 010 1201 RIVET 2 164 034 0104 DISTANCE SET BRACKET 1 164 1 034 0104 PLUM HANDLE 1 164 2 010 1201 HEX HEAD SCREW 1 165 010 2355 DISTANCE SET ROD 1 166 010 1201 HEX NUT 1 178 010 1201 WASHER 1 179 010 1201 ...

Page 56: ...6 18 50 Use and maintenance manual PH211 Stand leg assembly ...

Page 57: ...iption Quantity 234 010 1201 WASHER 4 235 010 1201 HEX SOCKET HEAD SCREW 4 250 1 013 0203 STAND LEG FRONT 2 250 2 013 0203 STAND LEG RIGHT LEFT 2 253 010 1201 HEX HEAD SCREW 12 254 010 1201 WASHER 24 255 010 1201 HEX NUT 12 ...

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Page 59: ...ons will enable you to custo mise your machine to suit the type of cuts you want optimising the time required to complete them Vice Vice play adjustment Vise Jaw Bracket has been adjusted in the perfect situation After your long term use if you feel vise jaw bracket slide irregular you could use hex wrench to adjust it by these two holes 7 ...

Page 60: ... Cutting head Blade tensioning unit Before use the machine please turn blade tension handle until shore up the screw A To maintain the blade tension is tightened Also make sure the blade tension within green area How to adjust blade tension ...

Page 61: ...3 54 Adjustments Loosen the blade tension and set the blade tension indication on the back of blade Making the blade tension go back to zero and adjust the blade tension until 2250 Kgs cm2 32 000 Lbs in2 ...

Page 62: ...ht otherwise slip off the wheels cut poorly or wear prematurely This should always be born in mind when using the machine Adjusting operating head travel During the cutting cycle the cutting head stroke is limited by the FCTI Head Upstroke Limit and FCTA Head Downstroke Limit The cutting head has a mechanical limiting switch that determines its downstroke to change this setting two hexagonal spann...

Page 63: ...lade guide head Bearing Blade guide plates The plate contact points feature widia inserts which guide the blade longitudinal ly A small amount of play must exist between the plates and blade to ensure that the blade runs smoothly and perpendicular to the work table Thanks to the widia inserts the working life of the guide plates is practically the same as that of the machine itself However if due ...

Page 64: ...open the front blade guard by undoing the fixing screw and rotating it as illus trated in the figure below wear protective gloves when making this adjustment make sure there is a small amount of play between the blade and guide plate inserts ...

Page 65: ...un smoothly adjust the locking torque of the two grub screws with an Allen key replace any worn plates by removing the plate fixing screw repeat the above sequence of steps on the rear blade guide head refit the front blade guard tension the blade and power up the machine again ...

Page 66: ...ditions both enhance operator safety and extend the tool s service life The cutting tool should in any case be replaced when poor cutting performance starts to affect productivity The tool changeover procedure is described as follows disconnect the machine from the power supply slacken the blade tension using the handwheel open the cutting head cover by 4 screws and take off the body frame cover o...

Page 67: ...head make sure the back of the blade is facing the flywheel stop and that the teeth along the lower part of the blade are inclined towards the head pivot Make sure there is a small amount of play between the blade and guide plate inserts repeat the above sequence of steps on the rear blade guide head fit the blade on the flywheels and remount the front and rear blade guards close the cutting head ...

Page 68: ...ent to the blade resting on the work surface Position the square on the cleaned work surface and rest it against the blade close to the right vice jaw at a point where the blade teeth do not prevent con tact Slacken the TCEI head fixing screw A and adjust the two grub screws B if the blade touches the square at its lower part If the point of contact is at the upper part slacken the TCEI screw A an...

Page 69: ...rocedure for correcting and adjusting the blade to 0 45 right and 45 and 60 left to make cuts at right angles to the fixed vice jaw is described below To make orthogonal adjustments at 0 use a workshop goniometer or a simple 90 square Operation sequence lower the head position the goniometer or square resting it on the fixed vice jaw adjacent to the blade ...

Page 70: ...nch adjust the stop screw until the right angle error shown on the goniometer is corrected Retighten the nut to lock the stop screw in the correct position Finally lock turntable and head rotation by pulling the locking lever back to wards you To adjust the 45 and 60 fixed points you will need a workshop goniometer or an instrument that can measure the exact angle of the blade Warning ...

Page 71: ...quare against the fixed vice jaw adja cent to the blade Slacken the nut opposite side to previous one on the stop screw while hol ding it firm with a hex wrench Adjust the stop screw until the angle error registered by the goniometer is corrected This done lock the nut while holding the screw steady Make sure all the stops are secure and that the locking lever is pulled back locked ...

Page 72: ......

Page 73: ... safety as well as for the safety of other personnel and in the interests of machine productivity H check that his own work and that of the other operators of the machine always complies with the relevant safety standards Therefore check that the safety devices are in position and work perfectly and that personal safety requirements are complied with H Ensure that the working cycle is efficient an...

Page 74: ...ine and those on the product itself General maintenance Daily The daily maintenance operations to carry out on the machine are as follows remove all swarf from the machine preferably with a non fibrous cloth empty the swarf drawer this is located on the right side of the base top up the lubricant coolant level check state of blade wear and replace if necessary check the blade cleaning brush clean ...

Page 75: ...e work on the PH211 special attention should be paid to operating units such as the blade tensioning cylinder already dealt with in Chapter 7 topping up levels the air treatment unit the pneumatic vice on the MA version and the optional CUT CONTROL SYSTEM The transmission box equipping the machine needs no maintenance Consumable materials Only specified oils must be used for the hydraulic and pneu...

Page 76: ...ort The following oils can also be said to have similar characteristics and are therefore compatible AGIP NB 200 SHELL Lutem TT IP Utens Fluid F Finally a lubricant coolant guaranteed and distributed by a band saw manufactu rer LENOX is BAND ADE SAWING FLUID LENOX tank capacity Lt 13 oil concentration 5 6 ...

Page 77: ...eeds H 1st speed 40 m min 4 pole H 2nd speed 80 m min 2 pole These speeds are selected using the polarity change switch situated on the control panel Choice of blade When using band saws to cut metals an important factor is the choice of pitch i e the number of teeth per inch 25 4 mm which must be suitable for the workpiece material The following recommendations may be taken as general guidelines ...

Page 78: ...the teeth If the downstroke speed is too high the cut will not be straight either vertically or horizontally The cutting speed depends as indicated above on the tensile strength of the material kg mm2 its hardness HRB and the thickness of largest sections The downstroke speed depends on the material thickness Therefore large section solid or thick walled materials s 5 mm can be cut at high speeds ...

Page 79: ... lubricant coolant fluid must ensure so that neither the saw teeth nor the work piece material in the cutting zone overheat Furthermore there must be a sufficient quantity and pressure of lubricant coolant to remove swarf from the cutting zone The lubricant coolant fluid must be of the highest quality in order to prevent tooth abrasion and welding of swarf to the teeth themselves seizing ...

Page 80: ... C Mn Si W Mo V Ni Co Al HRC Cr 0 47 0 75 0 22 1 00 1 00 0 12 0 52 0 08 45 50 0 85 0 25 0 30 4 15 6 37 5 00 1 92 64 66 1 07 0 25 0 20 3 75 1 50 9 50 1 15 8 00 67 69 HRC 67 68 HRC 45 50 HRC 65 66 HRC 45 50 TYPE OF BLADE The numbers in the columns indicate the content of the element in the steel Blade types The blades mounted on the PH211 are 2 085 x 20 x 0 9 mm the length can vary between 2 075 mm ...

Page 81: ...ge sections and diameters Variable pitch These blades have groups of teeth having different pitches and as a consequence have various tooth dimensions and differing relief angles These are also available in M2 and M42 types with zero and positive rakes The alternation of the different types of teeth helps to prevent vibration and noise Elimination of vibration increases the useful life of the tool...

Page 82: ...ng type is the most suitable for cutting large dimension pipes and profiles including large sections as well as for cutting solid sections up to the machine capacity limit Pitches available 3 4 4 6 Set The term set refers to the section of material removed by the blade during the cutting operation i e relating to width of cut and the offset position of the teeth with respect to the blade back Stan...

Page 83: ... set is used with very fine teeth for cutting thin pipe walls and small section profiles from 1 to 3 mm Alternating grouped sets These are groups of teeth angled to the right one straight tooth then a further group angled to the left This set is used for very fine teeth for cutting very thin sections less than 1 mm Alternating set This set is one tooth to the right followed by one to the left This...

Page 84: ... 6 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 60 70 50 60 15 20 15 20 75 90 80 90 25 40 70 80 80 90 S 10 10 S 30 30 S 50 50 S 80 80 S 120 120 S 230 Dimensions of the cutting section S mm Cutting speed mt min Cutting material Blade pitch Number of teeth per inch Lubrication sq mt min cut Structural steel Casehardened steel Steel for turning Mild steel High duty cast iron Rolled steel S...

Page 85: ... 845 En 58 E En 56 A En 58 G A 1 A 2 En 36 4360 50 A 3706 1 2 3 En 20 A En 31 1022 1035 1040 1010 1015 1060 1065 5135 5145 4135 3135 4315 8645 W 1 L 6 T 1 1310 316 304 410 309 S D 3 M 13 3310 3315 ASTMA 36 68 52100 Brinell HB HRB Kg mmq 160 170 160 180 150 175 160 180 160 180 180 205 180 200 200 230 190 230 200 225 190 220 150 190 190 230 217 248 217 248 160 200 130 170 150 200 215 240 200 230 160...

Page 86: ...19 150 M 28 060 A 40 060 A 96 070 M 55 080 A 40 080 A 62 1717 CDS 110 708 A 37 708 M 40 735 A 50 534 A 99 817 M 40 311 tipo 6 e 7 BD 2 BD 3 BS 1 304 S 15 304 C 12 316 S 16 317 S 16 XC 18 XC 38 H 1 20 M 5 XC 60 XC 75 40 M 5 XC 42 H 1 25 CD 4 35 NCD 6 50 CV 4 100 C 6 Z 160 CVD 12 Z 200 C 12 55 NCVD 7 Z 2 CN 18 10 Z 6 CN 18 09 Z 3 CN 19 10 Z 12 CNS 25 20 Z 6 CND 17 12 304 S 12 C 15 C 35 C 22 Mn C 28 ...

Page 87: ...ble you to follow a methodical procedure for solving any problem Troubleshooting blade and cutting problems PROBLEM PROBABLE CAUSE SOLUTION Blade scored or scratched Widia inserts chipped or worn Replace Widia inserts loose or tight Adjust Widia inserts dirty Clean and re adjust correctly Cutting surfaces scored Blade teeth worn Replace blade Head downstroke speed too fast Reduce downstroke speed ...

Page 88: ...stroke speeds or clean surfa ce Cutting speed too high The teeth slide on the mate rial without cutting reduce cutting speed Head downstroke speed too slow The band saw runs over the material without removing it increase downstroke speed Insufficient coolant Check coolant level and clean pipes and jets Incorrect fluid concentration Check and use the correct concentration New blade inserted into a ...

Page 89: ...45 right and left by means of the appropriate screws Perpendicularity of the blade to the work surface Check and realign the blade guide heads then adjust the blade using the appropriate screws so that it is perpendi cular to the work surface Blade tension incorrect Bring pressure up to 60 Bar Blade worn Replace blade Tooth pitch unsuitable Probably a blade with too many teeth per inch is being us...

Page 90: ... al tered surface areas such as oxides or sand or subcooled inclusions in the section These areas are much harder than the blade and will cause the teeth to break scrap or clean these ma terials Workpiece not clamped The blade may break if the workpiece moves during cut ting check the vice jaws and clamping pressure The blade stops in the cut Cutting pressure too high check and restore to rated pr...

Page 91: ...em downwards so as to bring the blade steady buttons up against the back of the blade Sections with large thickness variations The cutting speed and down stroke speed must be chosen to suit the most critical part of the cut Teeth angled in the wrong direction Fit blade so that teeth point in the right direction Blade run in wrongly When using a new blade the cutting and downstroke speeds must be r...

Page 92: ...ngs Workpiece not clamped pro perly The blade may break if the workpiece moves during cut ting check the vice jaws and clamping pressure Widia inserts positioned in correctly Adjust inserts position espe cially the width since blade thickness can exceed the manufacturer s declared tole rance ratings Widia blade steady buttons Can have a milling action on the back of the blade if worn or chipped ca...

Page 93: ... of the blade before starting a new job especially for the semi automatic cycle Widia inserts If worn the inserts can score the blade weakening it even to breaking point If the in serts are too far apart the blade will whip striking both the inserts and the material Replace or adjust Insufficient coolant Check coolant fluid level clean pipes and jets Incorrect fluid concentration Check and use the...

Page 94: ...e Spindle motor will not turn Electrical power supply Check the phases the cables the plug the socket Also check that the motor connections are in place Motor contactor Check input and output pha ses and check whether when supplying A1 and A2 relay the contactor closes Polarity change switch Check input and output pha ses Head control lever micros witch Check that it is functioning if broken repla...

Page 95: ...he minimum tension coil is energised when switch is turned from 0 to 1 If it is not replace the switch Emergency stop pushbutton in Make sure the emergency stop button is released turn it clockwise through 1 4 of a turn to release it Electropump is not working Electrical supply Check phases cables plug socket and fuse no 5 in the electrical plant No return valve Clean if blocked replace Filter Cle...

Page 96: ...w sign of neglect overloading abuse accident inadequate maintenance or unauthorized altering LiabilityorobligationonthepartofHyd Mech fordamages whethergeneral specialor fornegligence andexpressly including any incidental and consequential damages is hereby disclaimed Hyd Mech s obligation to repair or repla ce shall be the limit of its liability under this warranty and the sole and exclusive righ...

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