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1、BRITISH STANDARDBS EN ISO 10360-2:1996 Implementation of EN ISO 10360-2:1995 Coordinate metrology Part 2: Performance assessment of coordinate measuring machines The European Standard EN ISO 10360-2:1995 has the status of a British Standard ICS 17.040.30 Licensed Copy: sheffieldun sheffieldun, na, S
2、at Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 10360-2:1996 This British Standard, having been prepared under the direction of the Advanced Manufacturing Technology Assembly, was published under the authority of the Standards Board and comes into effect on 15 November 1996 B
3、SI 10-1998 The following BSI references relate to the work on this standard: Committee reference AMT/-/8 Draft for comment: 92/96450 DC ISBN 0 580 26441 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Advanced Manufacturing Technology
4、Assembly to AMT/-/8, Computer-aided engineering metrology, upon which the following bodies were represented: Joint Information Systems Committee (JISC) National Physical Laboratory Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:5
5、5 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 10360-2:1996 BSI 10-1998i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN ISO 10360-23 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
6、EN ISO 10360-2:1996 ii BSI 10-1998 National foreword This Part of BS EN ISO 10360 has been prepared by AMT/-/8 and is the English language version of EN ISO 10360-2:1995 Coordinate metrology Performance assessment of coordinate measuring machines published by the European Committee for Standardizati
7、on (CEN). It supersedes BS 6808-2:1987, which is withdrawn. It is identical with ISO 10360-2:1994 published by the International Organization for Standardization (ISO). This British Standard is published under the direction of the Advanced Manufacturing Technology Assembly who has the responsibility
8、 to: aid enquirers to understand the text; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and Europea
9、n Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road, London W4 4AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Complianc
10、e with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, page 2, the ISO title page, pages ii to iv, pages 1 to 8 and a back cover. This standard has been upd
11、ated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN
12、 ISO 10360-2 June 1995 ICS: 17.040.30 Descriptors: Metrology, dimensional measurements, measuring instruments, tests, performance evaluation, acceptance testing, verification, coordinate measuring machines English version Coordinate metrology Part 2. Performance assessment of coordinate measuring ma
13、chines (ISO 10360-2:1994) Mtrologie par coordonnes Partie 2. Evaluation des performances des machines mesurer tridimensionnelles (ISO 10360-2:1994) Koordinatenmetechnik Beurteilung der Leistungsfhigkeit von Koordinatenmegerten (ISO 10360-2:1994) This European Standard was approved by CEN on 1995-03-
14、24. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained
15、on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretari
16、at has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for
17、 Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN ISO 10360-2:1995 E Licen
18、sed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 10360-2:1995 BSI 10-1998 2 Foreword The text of the International Standard from ISO/TC 3, Limits and fits, of the International Organization for Standardization (ISO) has been taken over as a
19、 European Standard by CEN. This European Standard shall be given the status of a National Standard, either by publication of an identical text or by endorsement, at the latest by December 1995, and conflicting national standards shall be withdrawn at the latest by December 1995. According to the CEN
20、/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: she
21、ffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 10360-2:1995 ii BSI 10-1998 Foreword ISO (the International Organization for Standardization) is
22、a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represent
23、ed on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards a
24、dopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 10360-2 was prepared by Technical Committee ISO/TC 3, Limits and fits. ISO 10
25、360 consists of the following parts, under the general title Coordinate metrology: Part 2: Performance assessment of coordinate measuring machines; Part 3: Performance test for CMMs with a rotary axis as the fourth axis. Annexes A and B of this part of ISO 10360 are for information only. Licensed Co
26、py: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 10360-2:1995 iii BSI 10-1998 Contents Page Introduction1 1Scope1 2Normative references1 3Definitions1 4Acceptance test and periodic reverification of the CMM2 5Acceptance test and reverification of
27、 the CMM probing system3 Annex A (informative) Interim checking5 Annex B (informative) Sample data sheet6 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006
28、, Uncontrolled Copy, (c) BSI EN ISO 10360-2:1995 BSI 10-19981 Introduction The primary assessment of the performance of a coordinate measuring machine (CMM) is, where practicable, a length-measuring task. The reasons for this approach are: to make the test conform, as closely as possible, to a frequ
29、ently-performed measurement procedure; to provide well-defined traceability to the unit length, the metre. The test of the probing system is intended to assess probing errors, including those not revealed by the acceptance test, associated with the contacting type of CMM probing system operating in
30、the discrete-point measuring mode. Because it is not possible to completely isolate the probing errors from other sources of machine error, some measurement errors, of both static and dynamic origin, inherent in the other parts of the CMM measuring system will also be measured by this test. 1 Scope
31、This part of ISO 10360 specifies: a) the acceptance test, which verifies that the performance of a coordinate measuring machine (CMM) and the CMM probing system is as stated by the manufacturer; b) the reverification test, which enables the user to reverify CMM performance and the CMM probing system
32、 periodically; c) the interim check (see annex A), which enables the user to make checks on a CMM and the CMM probing system between regular reverification tests; in relation to the three-dimensional error of length measurement of a CMM capable of measuring Cartesian, cylindrical or spherical coordi
33、nates of points in space. A limited number of tests is carried out, but their locations may be anywhere within the working volume of the CMM. Three nonredundant axes (excluding the axes associated with the probe system) shall be tested. 2 Normative references The following standards contain provisio
34、ns which, through reference in this text, constitute provisions of this part of ISO 10360. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 10360 are encouraged to investigate the possibility of
35、applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 3650:1978, Gauge blocks. VIM, International Vocabulary of Basic and General Terms in Metrology. 3 Definitions For the purposes of this part of
36、 ISO 10360, the following definitions apply. 3.1 coordinate measuring machine (CMM) measuring device, the base of which is fixed in place during use, designed to take measurements from at least three linear or angular displacements generated by the machine. At least one of the three displacements sh
37、all be linear measurement 3.2 error of indication of a CMM indication of a CMM minus the (conventional) true value of the measurand NOTE 1Error of indication includes the error of the material standard of length. 3.3 uncertainty of dimensional measurement estimate characterizing the range of values
38、within which the true value of a measurand lies 3.4 material standard material measure reproducing a known value of a dimensional quantity (length, diameter, etc.) which is traceable to national standards, and is used for the verification test of a CMM 3.5 material standard of length material standa
39、rd containing two or more nominally parallel planes, the distance between these planes being specified NOTE 2Examples of material standards of length are gauge blocks according to ISO 3650 and step gauges. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:24:55 GMT+00:00 2006, Uncontrolled C
40、opy, (c) BSI EN ISO 10360-2:1995 2 BSI 10-1998 3.6 error of indication of a CMM for length measurement, E by convention, the error with which the length of the material standard can be determined with a CMM, the measurement being taken through two opposite points on two nominally parallel planes, no
41、rmal to one of the planes, when the points are approached from opposite directions the error of indication of a CMM for length measurement, E, expressed in micrometres, is stated in one of three forms E = A + L/K B, or E = A + L/K, or E = B where the expressions apply for any position or orientation
42、 of the material standard within the CMM measurements shall be made utilising the three axes of the machine to which the manufacturer has stated that the quoted value of E applies 3.7 error of indication of a CMM for periodic reverification, V error of indication chosen by the user for the periodic
43、reverification test, according to the users requirements and use of the machine 3.8 probing error, R by convention, the error within which the range of radii of a material standard can be determined with a CMM, the measurements being taken using a sphere as substrate R is a positive constant error w
44、hose value is supplied by the CMM manufacturer the value of R applies for any location of the material standard within the working volume of the CMM and for any probing direction 3.9 probing error for periodic reverification, S probing error chosen by the user for the periodic reverification test, a
45、ccording to the users requirements and use of the machine 3.10 radial distance, r distance between the centre of the Gaussian (least-squares) sphere (substitution element) and the probed point 4 Acceptance test and periodic reverification of the CMM 4.1 Operating conditions Before beginning the test
46、s given in 4.2 and 4.3, the CMM shall be operated using the procedures as specified in the manufacturers instruction manual, for example: a) machine start-up; b) probe qualification; c) probe configuration. The necessary information should be provided by the manufacturer. For the tests given in 4.2
47、and 4.3, the environmental and operating conditions recommended by the manufacturer shall apply. 4.2 Acceptance test 4.2.1 Principle To establish whether the CMM is capable of measuring within the manufacturers stated value of E, values of the error of length measurement, L, are determined. 4.2.2 Ap
48、paratus 4.2.2.1 Coordinate measuring machine to be tested (see 3.1). 4.2.2.2 Material standard of length, either a step gauge or a series of gauge blocks conforming to ISO 3650 being strongly recommended. It is recommended that the longest length of the material standard is at least 66 % of the long
49、est space diagonal; the shortest length of the material standard is less than 30 mm. If a manufacturers material standard is used, then no additional uncertainty shall be added to the value of E. If a users material standard is used, and if the uncertainty of the users material standard, F, is greater than 20 % of the value of E, then E shall be redefined as the sum of E and F. Ais a constant, expressed in micrometres and supplied by the CMM manufacturer; Kis a dimensionless constant supplied by the CMM manufacturer; Lis the
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