renishaw RTP20 Users Guide
RTP20 user's guide
Documentation part number: H-1000-5116-02-A
RTP20 user's guide
http://www.renishaw.com
Issued 09 2014
1
General information
©20062014Renishawplc.Allrightsreserved.
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.
WEEE
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.
RTP20 user's guide
http://www.renishaw.com
Issued 09 2014
2
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 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 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
RTP20 user's guide
http://www.renishaw.com
Issued 09 2014
3
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
RTP20 user's guide
http://www.renishaw.com
Issued 09 2014
4
System description
RTP20isanindexableheadthatusestheCMM'smotionforrepeatablerepositioning.Itofferslowcost‘motorised'headfunctionalitywith
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:
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
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
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.
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.
RTP20 user's guide
http://www.renishaw.com
Issued 09 2014
5
RTP20
Specification
Measuring performance
Positionalrepeatability(2σ) 2μm(0.00008in)
(At stylus tip with TP20 standard force module and 10 mm (0.39 in) stylus length)
Positionalrepeatability(2σ) 3μm(0.00012in)
(At stylus tip with EM2 94.5 mm (3.72 in) extended module and stylus 10 mm (0.39 in) long).
Technical data
Range of articulation A-axis 0°to90°in15°increments
Range of articulation B-axis ±180°in15°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°Cto+40°C(+50°to+104°F)
Storage temperature range 10°Cto+70°C(+14°to+158°F)
Probe module mounting TP20 kinematic
Weight - without shank 208 g
RTP20 user's guide
http://www.renishaw.com
Issued 09 2014
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Dimensions
RTP20 user's guide
http://www.renishaw.com
Issued 09 2014
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