1、BSI Standards PublicationBS ISO 10791-1:2015Test conditions for machiningcentresPart 1: Geometric tests for machines withhorizontal spindle (horizontal Z-axis)BS ISO 10791-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 10791-1:2015.It supersedes BS ISO
2、10791-1:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MTE/1/2, Machine tools - Accuracy.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessar
3、yprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 74312 2ICS 25.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publ
4、ished under the authority of theStandards Policy and Strategy Committee on 28 February 2015.Amendments issued since publicationDate Text affectedBS ISO 10791-1:2015 ISO 2015Test conditions for machining centres Part 1: Geometric tests for machines with horizontal spindle (horizontal Z-axis)Condition
5、s dessai pour centres dusinage Partie 1: Essais gomtriques des machines broche horizontale (axe Z horizontal)INTERNATIONAL STANDARDISO10791-1Second edition2015-02-01Reference numberISO 10791-1:2015(E)BS ISO 10791-1:2015ISO 10791-1:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT IS
6、O 2015All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be req
7、uested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 10791-1:2015ISO 10791-1:2015(E)Contents
8、 PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Preliminary remarks . 23.1 Measurement units 23.2 Reference to ISO 230-1 23.3 Reference to ISO 10791-6 23.4 Testing sequence . 23.5 Tests to be performed . 23.6 Tolerances . 33.7 Measuring instruments . 33.8 Diagrams 33.9 Pallets 33.
9、10 Software compensation . 33.11 Machine configurations . 33.12 Designation 43.13 Axes not under test 44 Geometric tests 64.1 Straightness errors of linear motions . 64.2 Angular errors of linear motions. 94.3 Squareness errors between linear motions 124.4 Spindle . 15Annex A (normative) Horizontal
10、non-rotating tables .20Annex B (normative) Tables rotating around a vertical B axis .26Annex C (normative) Tables rotating around a vertical B axis and tilting around a horizontal Aaxis.35Annex D (normative) Tables rotating around a horizontal A axis and swivelling around a vertical Baxis 50Annex E
11、(informative) Error motions of tool holding spindle and work holding rotary table axes 65Annex F (informative) Error motions of axes of rotation of rotary and tilting tables (see Annex C) 69Annex G (informative) Error motions of axes of rotation of rotary and swivelling tables (see Annex D) .77Bibli
12、ography .85 ISO 2015 All rights reserved iiiBS ISO 10791-1:2015ISO 10791-1:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
13、 ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborate
14、s closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval crit
15、eria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject o
16、f patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade nam
17、e used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technica
18、l Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 39, Machine tools, SC 2, Test conditions for metal cutting machine tools.This second edition cancels and replaces the first edition (ISO 10791-1:1998), which has
19、 been technically revised.ISO 10791 consists of the following parts, under the general title Test conditions for machining centres: Part 1: Geometric tests for machines with horizontal spindle (horizontal Z-axis) Part 2: Geometric tests for machines with vertical spindle or universal heads with vert
20、ical primary rotary axis (vertical Z-axis) Part 3: Geometric tests for machines with integral indexable or continuous universal heads (vertical Z-axis) Part 4: Accuracy and repeatability of positioning of linear and rotary axes Part 5: Accuracy and repeatability of positioning of work-holding pallet
21、s Part 6: Accuracy of speeds and interpolations Part 7: Accuracy of finished test pieces Part 8: Evaluation of contouring performance in the three coordinate planes Part 9: Evaluation of the operating times of tool change and pallet change Part 10: Evaluation of the thermal distortionsiv ISO 2015 Al
22、l rights reservedBS ISO 10791-1:2015ISO 10791-1:2015(E)IntroductionA machining centre is a numerically controlled machine tool capable of performing multiple machining operations, including milling, boring, drilling, and tapping, as well as automatic tool changing from a magazine or similar storage
23、unit in accordance with a machining program.The object of ISO 10791 (all parts) is to supply information as wide and comprehensive as possible on tests which can be carried out for comparison, acceptance, maintenance, or any other purpose deemed necessary by user or manufacturer/supplier. ISO 10791
24、specifies, with reference to the relevant parts of ISO 230, several families of tests for machining centres with horizontal spindle, standing alone or integrated in flexible manufacturing systems.This part of ISO 10791 also establishes the tolerances for the test results corresponding to general pur
25、pose and normal accuracy machining centres.This part of ISO 10791 is also applicable, totally or partially, to other numerically controlled machines, when their configuration, components, and movements are compatible with the tests described herein.Accessory spindle heads, forming the object of Anne
26、xes A through C in the first edition of this part of ISO 10791, are now covered by the more general ISO 17543-1, as they are not only used on machining centres.In this edition of ISO 10791-1, the test of the table flatness (formerly G15) has been deleted for several reasons, among which are the foll
27、owing: the table surface is not normally used as a reference for the location of the workpiece; sometimes, the machine is supplied with some fixtures already mounted on the table; sometimes, the machine is provided with a receiver where several pallets can be mounted; for tests made during the worki
28、ng life of the machine, the surface might no longer be suitable for accurate measurements, mostly on large machines. ISO 2015 All rights reserved vBS ISO 10791-1:2015ISO 10791-1:2015(E)vi ISO 2015 All rights reservedBS ISO 10791-1:2015Test conditions for machining centres Part 1: Geometric tests for
29、 machines with horizontal spindle (horizontal Z-axis)1 ScopeThis part of ISO 10791 specifies, with reference to ISO 230-1, the geometric tests for machining centres (or other numerically controlled machines, where applicable) with horizontal spindle (i.e. horizontal Z-axis).This part of ISO 10791 ap
30、plies to machining centres having three numerically controlled linear axes (X-axis up to 5 000 mm length, Y-axis up to 3 200 mm length, and Z-axis up to 2 000 mm length), but refers also to supplementary movements, such as those of rotary, tilting, and swivelling tables. Movements other than those m
31、entioned are considered as special features and the relevant tests are not included in this part of ISO 10791.This part of ISO 10791 takes into consideration in Annexes A through D four possible types of tables, fixed and rotary, as hereunder described: Annex A: horizontal non-rotating tables; Annex
32、 B: tables rotating around a vertical B-axis; Annex C: tables rotating around a vertical B-axis and tilting around a horizontal A-axis; Annex D: tables rotating around a horizontal A-axis and swivelling around a vertical B-axis.This part of ISO 10791 does not consider accessory spindle heads, which
33、are covered by ISO 17543-1:1).This part of ISO 10791 deals only with the verification of geometric accuracy of the machine and does not apply to the testing of the machine operation, which should generally be checked separately. Tests not concerning the pure geometric accuracy of the machine are dea
34、lt with in other parts of ISO 10791, as listed in the Foreword.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the
35、latest edition of the referenced document (including any amendments) applies.ISO 230-1:2012, Test code for machine tools Part 1: Geometric accuracy of machines operating under no-load or quasi-static conditionsISO 230-7:1), Test code for machine tools Part 7: Geometric accuracy of axes of rotationIS
36、O 841, Industrial automation systems and integration Numerical control of machines Coordinate system and motion nomenclatureISO 10791-6:2014, Test conditions for machining centres Part 6: Accuracy of speeds and interpolations1) To be published.INTERNATIONAL STANDARD ISO 10791-1:2015(E) ISO 2015 All
37、rights reserved 1BS ISO 10791-1:2015ISO 10791-1:2015(E)3 Preliminary remarks3.1 Measurement unitsIn this part of ISO 10791, all linear dimensions, deviations, and corresponding tolerances are expressed in millimetres; angular dimensions are expressed in degrees, and angular deviations and the corres
38、ponding tolerances are expressed in ratios as the primary method, but in some cases, microradians or arcseconds can be used for clarification purposes. The following expression should be used for conversion of the units of angular deviations or tolerances:0,010/1 000 = 10 rad 2”3.2 Reference to ISO
39、230-1To apply this part of ISO 10791, reference shall be made to ISO 230-1, especially for the installation of the machine before testing, warming up of the spindle and other moving components, description of measuring methods, and recommended uncertainty of testing equipment.In the “Observations” b
40、lock of the tests described in Clause 4 and the annexes, the instructions are preceeded by a reference to the corresponding clause in ISO 230-1 in cases where the test concerned is in compliance with the specifications of that International Standard.3.3 Reference to ISO 10791-6In ISO 10791-6:2014, A
41、nnex A, B, and C, kinematic tests are described for testing circular interpolation motion by simultaneous three-axis control (AK1, AK2, BK1, BK2, CK1, CK2). These are based on using displacement sensor(s) with a sphere-ended test mandrel or using a ball bar.These kinematic tests can be used for dete
42、rmining the position and orientation of rotary axes with respect to the linear axes.Kinematic test BK2 c) CK2 c) in ISO 10791-6:2014 can be used as an alternative for the following tests if all relevant geometric error compensation functions are identical: BG8, BG9, CG8, CG10, DG9, and DG11.3.4 Test
43、ing sequenceThe sequence in which the tests are presented in this part of ISO 10791 in no way defines the practical order of testing. In order to make the mounting of instruments or gauging easier, tests can be performed in any order.3.5 Tests to be performedWhen testing a machine, it is not always
44、necessary, nor possible, to carry out all the tests described in this part of ISO 10791. When the tests are required for acceptance purposes, it is up to the user to choose, in agreement with the manufacturer/supplier, those tests relating to the components and/or the properties of the machine which
45、 are of interest. These tests are to be clearly stated when ordering a machine. Mere reference to this part of ISO 10791 for the acceptance tests, without specifying the tests to be carried out, and without agreement on the relevant expenses, cannot be considered as binding for any contracting party
46、.2 ISO 2015 All rights reservedBS ISO 10791-1:2015ISO 10791-1:2015(E)3.6 TolerancesIn this part of ISO 10791, all tolerance values (see ISO 230-1:2012, 4.1) are guidelines. When they are used for acceptance purposes, other values can be agreed upon between the user and the manufacturer/supplier. The
47、 required/agreed tolerance values are to be clearly stated when ordering the machine.When establishing the tolerance for a measuring length different from that given in this part of ISO 10791 the tolerance can be determined by means of the law of proportionality (see ISO 230-1:2012, 4.1.2). It shall
48、 be taken into consideration that the minimum value of tolerance is 0,005 mm.3.7 Measuring instrumentsMeasuring instruments indicated in the tests described in the following sections are examples only. Other instruments capable of measuring the same quantities and having the same, or a smaller, meas
49、urement uncertainty can be used. Reference shall be made to ISO 230-1:2012, Clause 5, which indicates the relationship between measurement uncertainties and the tolerances.When a “dial gauge” is referred to, it can mean not only dial test indicators (DTI), but any type of linear displacement sensor such as analogue or digital dial gauges, linear variable differential transformer (LVDTs), linear scale displacement gauges, or non-contact sensors, when applicable to the test concerned (see ISO 230-1:2012, Claus
