RTP20 user's guide - Renishaw resource centre
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1. e The CMM motion is then used to engage a drive cup located in the head s A axis swivel with the pole mounted sphere enabling rotation of the head in the A and B axes by driving around the pole e The indexing operation is completed by again using the CMM motion to drive the locking lever against the pole mounted sphere thus locking the head The automated indexing of the RTP20 allows the integral TP20 probe to be moved to 168 repeatable positions in 15 degree increments using both the A and B axes requiring a one time only qualification for each stylus position thus ensuring fast throughput for part inspection Using the CMM motion to lock and orientate the head together with the MCR20 change rack which allows repeatable interchange between qualified probe modules provides a fully automated system ial NOTE 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 B axis scale Issued 09 2014 5 RTP20 user s guide RENISHAW amp apply innovation RTP20 Specification M easuring performance Positional repeatability 20 2 um 0 00008 in At stylus tip with TP20 standard force module and 10 mm 0 39 in stylus length Positional repeatability 20 3 um 0 00012 in At stylus t2. RENISHAW amp apply innovation RTP20 user s guide http www renishaw com RTP20 user s guide Documentation part number H 1000 5116 02 A A nipa0 RENISHD Issued 09 2014 1 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com General information 2006 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
3. e After changing any measuring system component except a prequalified TP20 module e If the initial state is unknown or uncertain Issued 09 2014 10 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com TP20 probe modules This section covers the use and care of the TP20 probe modules for the RTP20 Introduction The Renishaw TP20 probe modules incorporate 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 RTP20 kinematic mount It is possible to change TP20 modules with different stylus configurations without re qualification Product compatibility The TP20 is suitable for use with all Renishaw probe interfaces and probe heads which service the TP2 and TP6 touch trigger probes Diameter 13 2 mm Length LF SF MF EF EM1 STD EM2 STD 38 mm 88 mm 113 mm 42 mm TP20 kinematic Thread M2 x 0 4 Probe module mounting Stylus mount Sense directions TAO R 5 way X Y Z EM2 STD WwW P D o OY lt r w er ro way 6 way X Y Z 10 N 1 kgf 36 ozf maximum IP30 Probe module life 25 000 changes Probe module pull off force Issued 09 2014 RTP20 user s guide RENISHAW amp apply innovation http www renishaw com Probe module type and sty
4. force module reduce mass of stylus configuration Probe reseat failure Re trigger probe If problem persists please return to Renishaw for service Loss of measuring accuracy Possible causes Mounting not secure Check that the RTP20 is correctly mounted on the shank and that the screws are secure Check clamping mechanism in the CMM quill is secure for RTP20 RTP20 not fully locked Ensure that the thumbwheel lock lever is turned fully clockwise Force imparted to probe module after locking Re qualify the probe RTP20 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 09 2014 20 RENISHAW amp apply innovation RTP20 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 RTP20 is supplie
5. 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 SF MF LF or EF modules The TP20 6 way senses in the Z and Z directions allowing undercuts to be checked TP20 5 way modules g Issued 09 2014 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com Module Minimum stylus length Maximum stylus length Overall reach Low force LF 10 mm 0 39 in 30 mm 1 18 in 94 mm 3 70 in Standard force SF 10 mm 0 39 in 50 mm 1 97 in 114 mm 4 49 in Medium force MF 10 mm 0 39 in 60 mm 2 36 in 124 mm 4 88 in Extended force EF 10 mm 0 39 in 60 mm 2 36 in 124 mm 4 88 in 0 39 in 30 mm 1 18 in 98 mm 3 86 in EM1 10 mm 0 39 in 50 mm 1 97 in 143 mm 5 63 in 10 mm 0 39 in 50 mm 1 97 in 168 mm 6 61 in 6 way 10 mm 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 section 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
6. must not exceed 0 3 Nm 0 22 Ib ft aye 20 stylus tool GF shaft stylus Fitting the probe module with stylus on the RTP20 1 Examine all mating faces for cleanliness Where necessary clean the surfaces with the Renishaw CK200 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 Issued 09 2014 14 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com Alignment symbols aw Issued 09 2014 15 loa RENISHAW apply innovation RTP20 user s guide http www renishaw com The M CR20 module change rack The MCR20 probe module changing rack kit T NOTE Renishaw supplies eight types of MCR20 probe module changing rack kit each kit providing a different combination of probe modules See The MCR20 module change rack for the range of kits offered The MCR20 probe module changing rack kit comprises the following primary components e One Renishaw MCR20 probe module changing rack e One Renishaw SCR200 mounting kit e One location piece e One Renishaw PS2R stylus e Two Renishaw TP20 probe modules probe module combination supplied will depend on part number of kit The MCR20 probe module changing rack which can be easily mounted onto a CMM using t
7. 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 09 2014 2 RENISHAW amp apply innovation RTP20 user s guide http 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 right to imp
8. Kingdom T 44 0 1453 524524 F 44 0 1453 524901 www renishaw com cmmsupport For worldwide contact details please visit our main website at www renishaw com contact Issued 09 2014 RENISHAW apply innovation E
9. R20 probe module change rack onto your CMM carry out the following procedure A CAUTION For optimum crash protection it is recommended that the MCR20 is mounted as close as possible to the extreme edge of the CMM operating envelope 1 Place the location piece in the desired position on the CMM table and secure in place using the M8 M10 bolt and washer supplied Using the appropriate Allen key supplied fully hand tighten the M8 M10 bolt into the threaded insert within the CMM table T NOTES Whilst the TP20 system does not require that the MCR20 is aligned with the CMM axes ease of programming or software constraints may make alignment with the CMM axes desirable The MCR20 is not designed for horizontal operation with the ports in a vertical orientation 2 Mount the lower base of the MCR20 probe module change rack over the location piece and rotate the X axis of the rack until the required alignment is obtained 3 Using the 1 5 mm hexagonal key supplied fully hand tighten the M3 cone point grubscrew 0 5 Nm to 1 Nm to lock the MCR20 in position Issued 09 2014 17 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com A WARNINGS The use of eye protection is recommended Pinch hazards exist between parts and between moving and static parts Beware of unexpected movement You should remain outside the full working envelope of probe head extension bar probe combinati
10. RENISHAW amp apply innovation RTP20 user s guide http www renishaw com Fault finding RTP20 A CAUTION RTP20 is designed for automated operation under direct control of the CMM software To avoid possible collision during use RTP20 must not be unlocked re orientated or locked by hand during normal operation Poor measuring performance Possible causes Loose mounting Ensure shank mounting screws are tight and mounting to CMM is secure Problem with TP20 probe Diagnosis of the probe unit should be carried out with axes correctly locked an without head adjustment module between probe points Problem with swivelling Diagnosis of the indexing unit should only be carried out following satisfactory probe performance indexing unit No probe signal and or no probe status LED Possible causes 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 RTP20 only Possible causes Remedy Axes lock procedure incorrect Using automated cycle ensure lock lever is fully rotated to lock position Axes unlock procedure incorrect Using automated cycle ensure lock lever is fully rotated into unlock position during indexing Forces imparted onto head during lock up Using automated cycle unlock and re lock Attempted lockup in i
11. d with a Renishaw CK200 cleaning kit Do not use any other cleaning method When operating the TP20 probe in environments subjected to air borne contamination the user should determine the frequency of cleaning required Issued 09 2014 21 RTP20 user s guide RENISHAW amp apply innovation http www renishaw com Parts list TP20 probe modules The RTP20 can be ordered with either LOW STD MED or EXT force modules see see TP20 module selector section for details If additional modules are required please refer to the table below for part numbers Description TP20 modules LOW Part number A 1371 0392 STD A 1371 0270 MED A 1371 0271 EXT EM1 EM2 A 1371 0272 M A 1371 0430 M A 1371 0431 TP20 6 way A 1371 0419 Probe tools S7 stylus tool kit Supplied S20 stylus tool not supplied CK200 cleaning kit Supplied Head and shank combinations Description RTP20 pole adaptor M8 A 5000 7835 A 5003 2300 A 1085 0016 Part number RTP20 pole adaptor M6 RTP20 pole adaptor 5 16 RTP20 pole adaptor 3 8 A 5400 0121 A 5400 0122 A 5400 0123 A 5400 0124 RTP20 pole adaptor M10 A 5400 0125 RTP20 pole RTP20 cup replacement kit RTP20 kits Issued 09 2014 A 5400 0126 A 5400 0300 Please contact your local Renishaw subsidiary 22 Renishaw plc New Mills Wotton under Edge Gloucestershire GL12 8JR United
12. direct control of the CMM software To avoid possible collision during use RTP20 must not be unlocked re orientated or locked by hand during normal operation Preparing RTP20 for use To prepare RTP20 for use the pivot pole must be correctly fitted to the CMM table to ensure unobstructed operation of the probe head The pole consists of three sections a fixing stud middle stem and upper pole section which has the pivot sphere at its tip The pole sections must be fitted using the torque tool supplied to ensure the pole does not become loose during operation Various fixing studs are available for different CMM table fixture holes these are M6 x 1 M8 x 1 25 M10 x 1 5 5 16 x UNC and 3 8 x UNC Pivot ball O6 mm 02 5 mm 05 5 mm Upper pole section 243 mm Issued 09 2014 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com A CAUTION RTP20 must be locked in the A 0 and B 0 position before initially defining the pivot pole sphere Prior to initial use RTP20 is locked in the A 0 and B 0 position to enable the OEM supplied software to define the pivot pole sphere location at eight default positions for RTP20 This is done by calibrating four angles in the A axis and four angles in the B axis Whilst a small degree of misalignment can be accommodated by head cup geometry this should be minimised where possible and the first moves should be carried out slow
13. he Renishaw SCR200 mounting kit and location piece is designed to securely hold stored probe modules for automatic changing and to protect these stored probe modules from airborne contaminants that may be present within the working environment Only seven datum points are needed to set the MCR20 rack alignment and probe module changing co ordinates 145 mm When using the rack the inhibit version of the TP20 probe must be used By generating a magnetic field about the front of each docking port lid the MCR20 effectively closes the probe s inhibit switch during a probe module changing cycle Rack function is completely passive and no electrical input is required During automatic changing of probe modules limited crash protection is provided by hinged overtravel mechanisms incorporated within both the base and the docking port assembly of the MCR20 Provided any collision occurs in the direction of overtravel the hinged overtravel mechanisms can be manually reset and normally it should not be necessary to re datum the rack MCR20 probe module changing rack kits are available with the following combinations of probe modules and may be ordered from your supplier Issued 09 2014 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com MCR20 probe kit number Part number A 1371 0263 A 1371 0264 A 1371 0265 A 1371 0266 Mounting the MCR20 onto the CMM To mount the MC
14. ion Performance at 10 mm stylus length Parameter Unidirectional repeatability 20 EF 6 way 0 8 um EM1 STD 0 35 um EM2 STD 0 35 m 2D XY form measurement deviation Measured at a trigger speed of 8 mm s Test stylus ball diameter 4 mm Issued 09 2014 a ma Ea 0 6 um 0 8 um 1 um 2 um 1 5 um 0 8 um 0 8 um la RENISHAW apply innovation RTP20 user s guide http www renishaw com 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 TP20 module selector Seven versions of the TP20 probe module can be used with the RTP20 they can be identified by the end cap colour Low force LF probe module green cap Standard force SF probe module black cap Medium force MF probe module grey cap Extended force EF probe module brown cap 6 way 6W probe module blue cap Extension module 1 standard force EM1 STD black cap Extension module 2 standard force EM2 STD black cap NO of WD 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
15. ip with EM2 94 5 mm 3 72 in extended module and stylus 10 mm 0 39 in long a gt a 2 a g or ag Range of articulation A axis 0 to 90 in 15 increments Range of articulation B axis 180 in 15 increments Dual axis lock Via lock lever Head mounting MS range of shanks Cable connection 5 pin DIN socket Cable length 50 m with 24 awg conductors Probe status indication 1 LED Maximum load module EM2 94 5 mm 3 72 in extended Operating temperature range 10 C to 40 C 50 to 104 F Storage temperature range 10 C to 70 C 14 to 158 F Probe module mounting TP20 kinematic Weight without shank 208 g Issued 09 2014 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com Dimensions 48 mm 1 89 in 44 2mm Soran 1 74 in 1 52 in 87 5 mm 3 44 in 21 mm to 75 mm 0 83 in to 2 95 in a a 5 7 mm 0 22 in eau pe wp gr Shank mounting face B axis 180 Issued 09 2014 7 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com Installation Mounting the shank on the probe head a NOTE The RTP20 shanks are factory fitted and are selected by part number when ordering see Parts list e Hold the shank in the recess on the top face of the RTP20 e Rotate the shank until the four screw holes are aligned e Fix the shank in place using
16. lus length Parameter LF SF MF EF 6 way EM1STD EM2 STD Stylus length 50 mm 10 mm 10mm 10 mm 0 055 N 5 5 gf Trigger force nominal at stylus tip XY 0 08 N 8 gf 0 1 N 10 gf 0 1N 10 gf 0 14 N 14 gf 0 08 N 8 gf 0 08 N 8 gf 0 65 N 65 gf Trigger force nominal at stylus tip Z Overtravel force max at stylus tip XY 0 75 N 75 gf 0 2N 0 3N 20 gf 30 gf 1 9N 190 gf 0 2N 0 4N 20 gf 40 gf 3 2N 320 gf 0 2N 0 5N 20 gf 50 gf 1 6N 160 gf 0 25 N 25 gf 0 75 N 75 gf 0 2N 0 3N 20 gf 30 gf 0 75 N 75 gf 0 2N 0 3N 20 gf 30 gf Overtravel force max at stylus tip Z Overtravel force max at stylus tip Z 3 5N 350 gf 7N 700 gf 10N 1 kgf 25N 250 gf 9N 900 gf 3 5 N 350 gf 3 5N 350 gf Overtravel displacement XY 14 Overtravel displacement Z The probe module may detach if this value is exceeded 4 5 mm B NOTE The use of cranked styli with RTP20 is not recommended Probe module changing repeatability Probe module changing method Automatic changing Repeatability Manual changing 1 um 2 um M easuring performance NOTE The following data is derived from high accuracy test rig measurements and may not represent the performance achievable on a CMM Please consult your CMM supplier for overall system accuracy informat
17. ly to confirm clearances Using RTP20 To change the orientation of RTP20 1 Use the OEM supplied RTP20 software macro to send the head to a safety stand off position that offers a clear path to the pivot pole sphere 2 From this stand off position send RTP20 to the sphere using the CMM axes to locate and rotate the appropriate left or righthand locking lever of the head to unlock it The head is then repositioned to engage the RTP20 cup on the pivot pole sphere to index it to the required angle Once the required angle is reached the cup is disengaged from the pole sphere and the head is moved to locate and rotate the appropriate locking lever to the re locked condition 3 RTP20 is then returned to a safety stand off position clear of the pivot pole 4 Commence gauging ensuring that the correct qualification data is recalled for each head position To define RTP20 probe head positions e Use the OEM supplied RTP20 software macro to change the orientation of the probe to the next desired position and qualify the stylus tip s e Qualify the stylus tip s according to the CMM supplier s instructions e Repeat the qualification process for all other desired orientations and stylus tips Periodic re qualification should be performed under the following circumstances 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
18. ncorrect unqualified Using automated cycle unlock reposition correctly and re lock position Axes rattling during indexing RTP20 only Possible causes Remedy Incorrect unlock procedure Using automated cycle ensure lock lever is fully rotated to unlock position Incorrect indexing procedure Using automated cycle index each axis separately u NOTE The RTP20 is not user serviceable and should be returned to Renishaw if suspected faulty Issued 09 2014 19 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com TP20 Poor measuring performance Possible causes 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 the joints are clean and secure Contamination damage to stylus ball Contamination damage to stylus ball to stylus ball Inspect for damage clean thoroughly with solvent Inspect for damage clean thoroughly with solvent damage clean thoroughly with solvent Trigger force too high Use lower force module Unwanted triggering during probe or CMM movement Possible causes Remedy Trigger force too low stylus configuration to heavy Use higher force module reduce mass of stylus configuration Probe fails to rearm after trigger Possible causes Remedy Trigger force too low stylus configuration too heavy Use higher
19. only M3 x 5 mm screws supplied e Progressively tighten with the 2 5 mm A F hexagonal key supplied Mounting the RTP20 to the CMM The head is normally attached to the CMM quill using a shank to suit it For optimum shielding against EM phenomena it is recommended that the shank is grounded to the same electrical point 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 requalified before making further measurements rT NOTE Remove plastic cap from kinematic mount prior to attaching a TP20 module Keep in a safe place for future protection Issued 09 2014 8 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com Operation A WARNING Safety glasses should be worn and the CMM speed be reduced during initial operation of RTP20 It is the machine supplier s responsibility to ensure that the user is made aware of any hazards involved in operation including those mentioned in Renishaw product documentation and to ensure that adequate guards and safety interlocks are provided A CAUTION RTP20 is designed for automated operation under
20. ons It is the machine supplier s responsibility to ensure that the user is made aware of any hazards involved in operation including those mentioned in Renishaw product documentation and to ensure that adequate guards and safety interlocks are provided Under certain circumstances the probe signal may falsely indicate a probe seated condition Do not rely on probe signals to stop the machine i NOTES Renishaw recommends that datuming of the MCR20 is performed using the Renishaw PS2R stylus supplied If a different stylus is to be used the length L must be either 20 mm or 30 mm and the appropriate ball radius R must be used to calculate offsets It is strongly recommended that the EM1 STD and EM2 STD probe extension modules are not used for datuming of the MCR20 as the extended probe length may lead to increased concentricity errors within the probe system The following instructions assume that uncompensated probing points are taken and therefore that the target positions for port docking are absolute machine co ordinates Dimensions Length 200 mm Width 60 mm 145 mm Port entry velocity Maximum 800 mm s Mounting orientation Not designed for horizontal operation with the ports in a vertical orientation Y axis overtravel Hinged breakout from base 55 mm travel at port height Z axis overtravel Hinged docking port assembly 90 travel in Z axis Inhibit range 100 mm from port centre Issued 09 2014 18
21. rove change or modify its hardware or software without incurring any obligations to make changes to Renishaw equipment previously sold Patents Features of Renishaw s RTP20 product and other associated and similar Renishaw products are the subject of one or more of the following patents and or patent applications CN1695036B EP1546644 JP4361016 US7100297 US7293365 US6012230 Issued 09 2014 RENISHAW amp apply innovation RTP20 user s guide References and associated documents The following Renishaw documents are referred to in this document or may be a source of further relevant information They can easily be acquired from Renishaw web site www renishaw com Title Document number Installation and user s guide TP20 system H 1000 5008 Issued 09 2014 RENISHAW amp apply innovation RTP20 user s guide http www renishaw com System description RTP20 is an indexable head that uses the CMM s motion for repeatable repositioning It offers low cost motorised head functionality with an integral TP20 touch trigger probe Automated indexing of the head is realised through an innovative process which uses the motion of a CMM to achieve motorised head style operation This indexing process comprises of three operations e An external locking lever on the probe head is driven against a dedicated sphere mounted to a pole located on the bed of the CMM thus unlocking the head
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