ASME_B89.4.10360.2-2008.pdf

Acceptance Test and Reverification Test for Coordinate Measuring Machines(CMMs)Part 2:CMMs Used for Measuring Linear DimensionsAN AMERIC AN NATIO NAL STANDARDASME B89.4.10360.2-2008ASME B89.4.10360.2-2008 Acceptance Test and Reverification Test for Coordinate Measuring Machines(CMMs)Part 2:CMMs Used for Measuring Linear DimensionsDate of Issuance:July 11,2008 This Technical Report will be revised when the Society approves the issuance of a new edition.There will be no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Report.Interpretations are published on the ASME Website under the Committee Pages at http:/cstools.asme.org as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.ASME does not“approve,”“rate”,or“endorse”any item,construction,proprietary device or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical Engineers Three Park Avenue,New York,NY 10016-5990 Copyright 2008 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in the U.S.A.iiiASME B89.4.10360.2 Acceptance test and reverification test for coordinate measuring machines(CMMs)Part 2:CMMs used for measuring linear dimensions.The ASME B89.4.10360.2 Technical Report is based on,and is compliant with,the finaldraft International Standard(FDIS)ISO 10360-2,expected to be published as anInternational Standard in 2009.The ISO FDIS text appears verbatim in this TechnicalReport.Whenever the phrase“International Standard”appears,it refers to the ISO 10360-2FDIS document.Additional requirements and information specific to the ASMEB89.4.10360.2 Technical Report are included in bordered text boxes such as this one.Normative material is a fundamental part of the ASME B89.4.10360.2 Technical Report and,if applicable,supersedes the corresponding ISO 10360-2 normative text.In particular,thereare a few cases where text appearing in ISO 10360-2 is in conflict with the Normative text ofASME B89.4.10360.2,and accordingly the ASME B89.4.10360.2 requirements shall govern.The corresponding ISO text has been put into a“strikeout”(strikeout)font in those cases.Informative material in this Technical Report is meant to provide additional benefit for thereader.The ISO text,figures,and tables have been reprinted in ASME B89.4.10360.2 withpermission of ANSI.ivINTENTIONALLY LEFT BLANK v Contents Page Foreword.vii Committee Roster.viii Introduction.ix 1 Scope.1 2 Normative references.2 3 Terms and definitions.2 4 Symbols.6 5 Environmental and metrological requirements.7 5.1 Environmental conditions.7 5.2 Operating conditions.9 5.3 Length measurement error,EL.9 5.4 Repeatability range of the length measurement error,R0.9 5.5 Workpiece loading effects.10 6 Acceptance tests and reverification tests.10 6.1 General.10 6.2 Principle.12 6.3 Length measurement error with zero ram axis stylus tip offset,E0.12 6.3.1 General.12 6.3.2 Measuring equipment.12 6.3.3 Procedure.13 6.3.4 Derivation of test results.15 6.4 Repeatability range of the length measurement error,R0.16 6.5 Length measurement error with ram axis stylus tip offset of length 150 mm,E150.16 6.5.1 Measuring equipment.16 6.5.2 Procedure.16 6.5.3 Derivation of test results.19 6.6 Dual ram CMMs.19 6.6.1 Simplex operating mode.19 6.6.2 Duplex operating mode.19 7 Compliance with specifications.20 7.1 Acceptance test.20 7.1.1 Acceptance criteria.20 7.1.2 Data rejection and repeated measurements.21 7.2 Reverification test.27 8 Applications.27 8.1 Acceptance test.27 8.2 Reverification test.27 8.3 Interim check.28 9 Indication in product documentation and data sheets.28 Annex A(informative)Interim check.29 A.1 Interim check of the CMM.29 7.1.3 Thermal derating of specifications.23vi A.2Interim testing and the comparison to specifications.29 A.2.1 General.29 A.2.2 Interim testing using uni-directional artefacts.30 Annex B(normative)Artefacts that represent a calibrated test lengt