MH20 and MH20i user's guide
Contents
1. TP20 installation Assembling the probe module and stylus 1 Select the probe module with the correct trigger force rating for the application see TP20 module selector and TP20 specifications 2 Fit the stylus to the probe module first hand tightening then using the S7 stylus tool supplied for final tightness Renishaw GF styli require an S20 spanner The recommended tightening torque is 0 05 Nm to 0 15 Nm 0 04 Ib ft to 0 11 Ib ft Torque must not exceed 0 3 Nm 0 22 lb ft S20 stylus tool GF shaft stylus Issued 11 2014 17 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Fitting the probe module with stylus on the MH20 or MH20i 1 Examine all mating faces for cleanliness where necessary clean the surfaces with the Renishaw CK200 cleaning kit Supplied 2 The TP20 module and kinematic mount are marked with three unique alignment marks When offering the TP20 up to the probe head ensure that similar marks are aligned with each other Allow the TP20 body to engage under magnetic force Alignment marks CASA TP20 specifications Probing forces and overtravel limits Trigger force nominal at stylus tip Probe module stylus length LF SF MF EF EM1 EM2 TP20 6 way 10 mm 10 mm 25 mm 50 mm 10 mm 10 mm 10 mm XY 0 055 N 0 08 N 01N 01N 0 08 N 0 08 N 0 14 N 5 5 gf 8 gf 10 gf 10 gf 8 gf 8 gf 14 gf 0 19 ozf 0 28 ozf 0 35 ozf 0 35 oz2. x The use of this symbol on Renishaw products and or accompanying documentation indicates that the product should not be mixed with the general household waste upon disposal It is the responsibility of the end user to dispose of this product at a designated collection point for waste electrical and electronic equipment WEEE to enable reuse or recycling Correct disposal of this product will help save valuable resources and prevent potential negative effects on the environment For more information please contact your local waste disposal service or Renishaw distributor Warranty Renishaw plc warrants its equipment for a limited period as set out in our Standard Terms and Conditions of Sale provided that it is installed exactly as defined in associated Renishaw documentation Prior consent must be obtained from Renishaw if non Renishaw equipment e g interfaces and or cabling is to be used or substituted 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 Issued 11 2014 2 RENISHAW amp apply innovation MH20 and MH20i user s guide hittp www renishaw com Care of equipment Renishaw probes and associated systems are precision tools used for obtaining precise measurements and must therefore be treated with care Changes to Renishaw products Renishaw reserves the
3. 5 mm 24 5 mm 0 77in 0 77in 0 77in 0 77in 2 74in 3 72 in 0 96 in See MH20 dimensions and MH20i dimensions Module changing Changed manually probe repeatability is 1 um Issued 11 2014 19 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Fault finding MH20 and MH20i Poor measuring performance Possible cause Loose mounting Ensure shank mounting screws are tight and mounting to CMM is secure Problem with TP20 probe module see Diagnosis of the probe unit should be carried out with axes correctly locked and without head TP20 installation adjustment between probe points Problem with swivelling indexing unit Diagnosis of indexing unit should only be carried out following confirmation of satisfactory probe performance No probe signal and or no probe status LED Possible cause Remedy Cable faulty not connected Check continuity of cabling from head to interface machine control Probe interface faulty not connected Ensure correct connection of interface machine control Poor repeatability MH20i only Possible cause Axes lock procedure incorrect Ensure lock lever is fully rotated to lock position Axes unlock procedure incorrect Ensure lock lever is fully rotated to unlock position during indexing Forces imparted onto head during lock up Unlock and re lock holding lock lever
4. right to improve change or modify its hardware or software without incurring any obligations to make changes to Renishaw equipment previously sold Patents Features of Renishaw s MH20 and MH20i products and other associated and similar Renishaw products are the subject of one or more of the following patents and or patent applications US6012230 Issued 11 2014 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Introduction The MH20 and MH20i are manually operated probe heads that articulate to provide orientation of the probing axis MH20 provides non repeatable orientation while MH20i permits repeatable indexing at 15 increments marked on the A and B axes Both heads feature TP20 kinematic magnetic probe mounting allowing stylus module changes without the need for re qualification A range of shanks is available to suit most CMM quills Issued 11 2014 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Product description MH20 The MH20 incorporates the TP20 kinematic mount with 2 axis adjustable swivel The TP20 module is carried on the A axis swivel and rotates through 93 in the Z plane The B axis rotates through 300 in the X Y plane A thumbwheel locks the swivel in any position within the movement envelope of the head After each adjustment qualification must take place Module changing is po
5. scale is at the A axis reference position increments are in 15 Lock the head by turning the lock lever to the fully clockwise position Qualify the stylus tip s according to the CMM supplier s instructions Change the orientation of the probe to the next desired position and qualify the stylus tip s Repeat the qualification process for all desired orientations and stylus tips Commence gauging ensuring that the correct qualification data is recalled for each head position Periodic re qualification should be performed according to the following considerations CMM supplier s recommendations particularly in respect of temperature changes At the start of the working day or shift e After an accidental collision e After changing any measuring system component except a pre qualified TP20 module If the initial state is unknown or uncertain Locking lever operation Issued 11 2014 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com TP20 probe module This section covers the use and care of the TP20 probe modules for the MH20 and MH20i Introduction The Renishaw TP20 probe module incorporates a kinematic coupling which ensures highly repeatable stylus tip positioning The range of modules comprises 5 way versions with length or trigger force options and a 6 way version Probe modules fit directly onto the MH20 and MH20i kinematic mount It is possible to change TP20 modules
6. MH20 and MH20i user s guide http www renishaw com MH20 and M H20i user s guide Documentation part number H 1000 5195 05 A Issued 11 2014 RENISHAW apply innovation RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com General information 2002 2014 Renishaw plc All rights reserved This document may not be copied or reproduced in whole or in part or transferred to any other media or language by any means without the prior written permission of Renishaw The publication of material within this document does not imply freedom from the patent rights of Renishaw plc Disclaimer RENISHAW HAS MADE CONSIDERABLE EFFORTS TO ENSURE THE CONTENT OF THIS DOCUMENT IS CORRECT AT THE DATE OF PUBLICATION BUT MAKES NO WARRANTIES OR REPRESENTATIONS REGARDING THE CONTENT RENISHAW EXCLUDES LIABILITY HOWSOEVER ARISING FOR ANY INACCURACIES IN THIS DOCUMENT Trademarks RENISHAW and the probe emblem used in the RENISHAW logo are registered trademarks of Renishaw plc in the UK and other countries apply innovation is a trademark of Renishaw plc All brand names and product names used in this document are trade names service marks trademarks or registered trademarks of their respective owners Windows XP Windows 2000 Vista and Windows 7 are registered trade names of the Microsoft Corporation All trademarks and trade names are acknowledged
7. ervice Loss of measuring accuracy Possible cause Mounting not secure Check that the MH20i is correctly mounted on the shank and that the screws are secure Check clamping mechanism in CMM quill is secure for MH20 and MH20i MH20 MH20i not fully locked Ensure that the thumbwheel lock lever is turned fully clockwise Force imparted to probe module after locking Re qualify the probe MH20 MH20i worn or damaged Use only with the specified probe and extension combinations Faulty probe module Check by substitution or return to Renishaw or your supplier Issued 11 2014 21 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Maintenance Renishaw probes are intended for use in a protected metrology environment and therefore accumulation of dust or contamination should not occur In common with all precision measuring equipment regular inspection and cleaning is recommended to ensure continued high performance Maintenance of the head is limited to wiping the outer surfaces and axes scale labels with a clean dry cloth or proprietary cleaning material Maintenance of the TP20 probe is restricted to the periodic cleaning of the kinematic couplings on the probe head and the probe module To aid cleaning of these couplings the MH20 and MH20i are supplied with a Renishaw CK200 cleaning kit Do not use any other cleaning method When operating the TP20
8. f 0 28 ozf 0 28 ozf 0 49 ozf 0 65 N 0 75 N 1 9 N 3 2 N 0 75 N 0 75 N 1 6 N 65 gf 75 gf 190 gf 320 gf 75 gf 75 gf 160 gf 2 29 ozf 2 64 ozf 6 70 ozf 11 29 ozf 2 64 ozf 2 64 ozf 0 56 ozf Overtravel force maximum at stylus tip Probe module stylus length 83 SF MF EF EM1 EM2 TP20 6 way 10mm 10mm 25mm 50 mm 10 mm 10mm 10 mm XY 0 09N 0 2N 0 3N 0 2N 0 4N 0 2N 0 5N 0 2N 0 3N 0 2N 0 3N 0 25 N 9 of 20 gf 30 gf 20 gf 40 of 20 gf 50 of 20 gf 30 of 20 gf 30 of 25 gf 0 31 ozf 0 7 ozf 1 1 ozf 0 7 ozf 1 4 0zf 0 7 ozf 1 8 ozf 0 7 ozf 1 1 ozf 0 7 ozf 1 1 ozf 0 88 ozf 1 15N 5N 7N 10N 3 5N 3 5 N 2 5N 115 gf 350 gf 700 gf 1000 of 350 gf 350 gf 250 gf 4 05 ozf 12 35 ozf 24 71 ozf 35 30 ozf 12 35 ozf 12 35 ozf 8 83 ozf 9N 900 gf 31 8 ozf Issued 11 2014 18 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Overtravel displacement Probe module stylus length LF SF MF EF EM1 EM2 TP20 6 way 10mm 10mm 25mm 50 mm 10mm 10mm 10mm xY 14 14 14 14 14 14 14 3 1 mm 4mm 3 7mm 2 4mm 4mm 4mm 4 5mm 0 12 in 0 16 in 0 14 in 0 09 in 0 16 in 0 16 in 0 18 in E 1 5 mm 0 06 in The module may become detached if this value is exceeded Length Probe module stylus length LF SF MF EF EM1 EM2 TP20 6 way 10 mm 10 mm 25 mm 50 mm 10 mm 10 mm 10 mm Length 19 5 mm 19 5 mm 19 5 mm 19 5 mm 69 5 mm 94
9. ndard force SF probe module Black cap Medium force MF probe module Grey cap 3 Extended force EF probe module Brown cap pa Low force LF probe module Green cap 5 Extended module EM1 69 5 mm 2 74 in long Black cap e Extended module EM2 94 5 mm 3 72 in long Black cap TP20 6 way probe module Blue cap Medium and extended force modules are used to overcome the effects of false triggers caused either by stylus length and mass or vibration caused by machine acceleration forces The low force module permits the measurement of delicate objects The EM1 and EM2 extended modules allow access to otherwise inaccessible workpiece features Both operate using standard force and offer better measuring performance than using long styli with MF or EF modules The TP20 6 way senses in the Z and Z directions allowing undercuts to be checked TP20 5 way modules EM1 extension module EM2 extension module Issued 11 2014 16 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Module Stylus length minimum Stylus length maximum Overall reach Low force 10 mm 94 mm LF 0 39 in 3 70 in Standard force 10 mm 114 mm SF 0 39 in 4 49 in Medium force 10 mm 124 mm MF 0 39 in 4 88 in Extended force 10 mm 124 mm EF 0 39 in 4 88 in 6 way 10 mm 98 mm 6W 0 39 in 3 86 in 10 mm 143 mm 0 39 in 5 63 in 10 mm 168 mm 0 39 in 6 61 in
10. ng temperature range 10 C to 40 C 50 F to 104 F Storage temperature range 10 C to 70 C 14 F to 158 F Probe mount TP20 kinematic Weight without shank 100 g 3 53 oz Issued 11 2014 RENISHAW apply innovation E RENISHAW apply innovation MH20 and MH20i user s guide All dimensions are nominal 31 5 mm p 1 24 in mm 1 85 in TELL ae pe B axis 300 See TP20 specifications Issued 11 2014 7 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Pin no Function 1 LED cathode Ground LED anode Probe circuit 2 3 4 Serial number Electrical connection 5 pin DIN socket Issued 11 2014 RENISHAW amp apply innovation MH20 and MH20i user s guide M H20i specification M easuring performance Positional repeatability 20 At stylus tip with TP20 standard force module and 10 mm 0 39 in stylus length 1 5 um 0 00006 in At stylus tip with EM2 94 5 mm 3 72 in extended module and stylus 10 mm 0 39 in long 2 5 um 0 0001 in Technical data Range of articulation A axis 0 to 90 in 15 increments B axis 180 in 15 increments Dual axis lock Single lock lever MS range of shanks Cable connection 5 pin DIN socket Probe status indication 1 LED Maximum load EM2 94 5 mm 8 72 in extended module Operati
11. ng temperature range 10 C to 40 C 50 F to 104 F Storage temperature range 10 C to 70 C 14 F to 158 F Probe mount TP20 kinematic Weight without shank 210 g 7 4 oz Issued 11 2014 9 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com All dimensions are nominal 48 mm 1 89 in 37mm 1 45 in 61mm 2 4 in Length A axis KN 0 90 po 5 7 mm he 0 22 in a LT wp g B axis 180 See TP20 specifications From shank mounting face Issued 11 2014 10 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Function LED catchode Ground LED anode Serial number Electrical connection 5 pin DIN socket Issued 11 2014 11 la RENISHAW apply innovation MH20 and MH20i user s guide http www renishaw com M H20 and MH20i installation Mounting the shank to the probe head e The MH20 and MH20i shanks are factory fitted and are selected by part no when ordering see Parts list e MH20 shanks cannot be removed M H20i To mount a shank to an MH20i sold without a shank please observe the following procedure e Hold the shank in the recess on the top face of the MH20i e Rotate the shank until four screw holes are aligned e Fix the shank in place using only M3 x 5 mm screws supplied e Pr
12. ogressively tighten with the 2 5 mm A F hex key supplied Mounting the M H20 and MH20i head to the CMM The head is normally attached to the CMM quill using a shank to suit the CMM For optimum shielding against EM phenomena it is recommended that the shank is grounded to the same electrical ground as the control system Custom designed mountings are available subject to approval from Renishaw s Custom Products Department Please contact your supplier or Renishaw for further information The head mounting must be rigid as any movement during operation will introduce system measurement errors If the head is replaced or repositioned in the quill all head positions in current use must be re qualified before making further measurements i NOTE Remove plastic cap from kinematic mount prior to attaching a TP20 module Keep in a safe place for future protection Issued 11 2014 12 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com MH20 operation i NOTE Ensure thumbwheel is unlocked one full turn before re orientation Failure to do this will result in excessive wear to the swivel anodised surfaces Any wear to the swivel is cosmetic only and does not affect performance To change the orientation of the probe e Unlock the head by turning the thumbwheel anti clockwise one full turn e Grip the base of the swivel avoid touching the stylus or stylus module and manoeu
13. only Attempted lock up in incorrect un qualified position Unlock reposition correctly and re lock Axes rattling during indexing MH20i only Possible cause Remedy Incorrect unlock procedure Ensure lock lever is fully rotated to unlock position Incorrect indexing procedure Index each axis separately inal NOTE The MH20 and MH20i are not user serviceable and should be returned to Renishaw if suspected faulty Issued 11 2014 20 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com TP20 module Poor measuring performance Possible cause Remedy Stylus configuration too long or not rigid Use shorter stiffer stylus configuration Poor stylus assembly Ensure stylus joints are kept to a minimum and that all joints are clean and secure Contamination damage of stylus ball Inspect for damage clean thoroughly with solvent Trigger force too high Use lower force module Unwanted triggering during probe or CMM movement Possible cause Remedy Trigger force too low stylus configuration too heavy Use higher force module reduce mass of stylus configuration Probe fails to rearm after trigger Possible cause Remedy Trigger force too low stylus configuration too heavy Use higher force module reduce mass of stylus configuration Probe reseat failure Re trigger probe If problem persists please return to Renishaw for s
14. or worldwide contact details please visit our main website at www renishaw com contact Issued 11 2014 RENISHAW apply innovation E
15. probe in environments subjected to air borne contamination the user should determine the frequency of cleaning required Issued 11 2014 22 RENISHAW amp apply innovation MH20 and MH20i user s guide Parts list TP20 probe modules The MH20 and MH20i can be ordered with either LOW STD MED or EXT force modules see Head and shank combinations MH20 and Head and shank combinations MH20i for details If additional modules are required please refer to the table below for part numbers TP20 modules Description Part number LOW A 1371 0392 A 1371 0271 A 1371 0272 A 1371 0430 A 1371 0431 TP20 6 way A 1371 0419 Probe tools Description Part number S7 stylus tool kit Supplied A 5000 7835 S20 stylus tool not supplied A 5003 2300 CK200 cleaning kit Supplied A 1085 0016 Issued 11 2014 23 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com Head and shank combinations MH20 Description Part number MH20 MS1 T shank A 4043 xx01 MH20 MS2 T shank A 4043 xx02 MH20 MS3 T shank A 4043 xx03 MH20 MS5 T shank A 4043 xx05 MH20 MS7 T shank A 4043 xx07 MH20 MS9 T shank A 4043 xx09 MH20 MS11 T shank A 4043 xx1 1 MH20 MS15 T shank A 4043 xx15 MH20 MS18 T shank A 4043 xx18 For LOW force module insert 00 For STD force module insert 01 For MED force module inser
16. ssible without re qualification M H20i The MH20i incorporates the TP20 kinematic mount with 2 axis indexing The TP20 module is carried on the A axis swivel and rotates through 90 in the Z plane The B axis rotates through 180 in the X Y plane The axes are unlocked by releasing the locking lever allowing rotation to each position Positions are set at angular increments of 15 in each axis providing a total of 168 positions When head orientation is locked the probe is fully kinematically constrained in a highly repeatable spatial position This means that after initial qualification of the stylus tip the probe may be moved to any of the qualified positions without the need for re qualification during a gauging routine M H20 and M H20i The red LED on the front of the head indicates probe status and can be controlled by either the CMM or a Renishaw probe interface Conventionally LED ON indicates probe seated armed and LED OFF indicates probe triggered Electrical connection is via a 5 pin DIN connector Issued 11 2014 5 MH20 and MH20i user s guide M H20 specification M easuring performance See TP20 probe module for TP20 performance details Technical data Range of articulation A axis 93 B axis 300 Dual axis lock Single rotary thumbwheel MS T range of shanks Cable connection 5 pin DIN socket Probe status indication 1 LED Maximum load EM2 94 5 mm 3 72 in extension module Operati
17. t 02 For EXT force module insert 03 e g For MH20 with STD force module and MS9 T shank the part number is A 4043 0109 T NOTE For more information on the Renishaw shank range please refer to H 1000 5050 Issued 11 2014 24 MH20 and MH20i user s guide RENISHAW amp apply innovation http www renishaw com Head and shank combinations MH20i Description MH20i MS1 shank MH20i MS2 shank Part number A 4099 xx01 A 4099 xx02 MH20i MS3 shank A 4099 xx03 MH20i MS4 shank MH20i MS5 shank MH20i MS6 shank A 4099 xx04 A 4099 xx05 A 4099 xx06 MH20i MS7 shank A 4099 xx07 MH20i MS9 shank A 4099 xx09 MH20i MS10 shank MH20i MS12 shank MH20i MS13 shank A 4099 xx10 A 4099 xx12 A 4099 xx13 MH20i MS14 shank A 4099 xx15 MH20i MS15 shank A 4099 xx15 MH20i MS17 shank A 4099 xx17 For LOW force module insert 00 For STD force module insert 01 For MED force module insert 02 For EXT force module insert 03 e g For MH20i with MED force module and MS7 shank the part number is A 4099 0207 i NOTE For more information on the Renishaw shank range please refer to H 1000 5050 Issued 11 2014 25 Renishaw plc New Mills Wotton under Edge Gloucestershire GL12 8JR United Kingdom T 44 0 1453 524524 F 44 0 1453 524901 www renishaw com cmmsupport F
18. vre the head to the desired position e Lock the head in position by turning the thumbwheel clockwise until tight do not use excessive force the probe is now ready for qualification e Qualify the stylus tip whenever the head is re orientated e Qualify the stylus tip s according to the CMM supplier s instructions Periodic re qualification should be performed according to the following considerations e CMM supplier s recommendations particularly in respect of temperature changes e At the start of the working day or shift e After an accidental collision e After changing any measuring system component except a pre qualified TP20 module e If the initial state is unknown or uncertain Replacement thumbwheel If the thumbwheel is removed and then lost a replacement can be ordered by quoting part no A 4043 0120 Issued 11 2014 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com M H20i operation u NOTE Ensure locking lever is in fully locked position before taking gauging points To change the orientation of the probe Unlock the head by turning the lock lever to the fully anti clockwise position Grip the body of the probe avoid touching the stylus or stylus module and rotate the B axis until the desired angle indication on the scale is adjacent to the B axis reference mark increments are in 15 Rotate the A axis until the desired angle indication on the
19. with different stylus configurations without re qualification TP20 probe specification standard force module described Sense directions 5 way X Y Z Unidirectional repeatability 0 35 um 0 000014 in 2 sigma Module changing repeatability 1 um 0 000039 in XY pre travel variation 0 8 um 0 000031 in Trigger force non adjustable XY 0 08 N 8 gf 0 29 ozf Z 0 75N 76 5 gf 2 7 ozf TP20 module pull off force 10 N 1 kgf 36 ozf max Renishaw styli with M2 thread fit the TP20 probe module Specified with standard force TP20 module with PS12R stylus and Renishaw PI 4 2 interface kk This can be achieved by taking care when changing modules see Fitting the probe module with stylus on the MH20 or MH20 See Probing forces and overtravel limits for LF SF MF and EF trigger force values The probe module Each probe module houses the touch trigger mechanism that carries the stylus assembly The module provides overtravel in the X Y and Z axes The M2 stylus mounting is compatible with Renishaw s comprehensive range of M2 styli Electrical contact pins automatically complete the probe circuit Trigger force and length option Seven versions of the TP20 probe module can be used with the MH20 and MH20i they can be identified by the end cap colour Issued 11 2014 RENISHAW amp apply innovation MH20 and MH20i user s guide http www renishaw com a Sta
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