ISO INTERNATIONAL STANDARD 10791-5 First edition 1998-03-01 Test conditions for machining centres Part 5: Accuracy and repeatability of positioning of work-holding pallets Conditions d'essai pour centres d'usinage - Partie 5: Precision et repétabilite de positionnement des palettes porte-pieces ISO Reference number ISO 10791-5:1998(E) y IHS under ted without license from IHS Not for Resale ISO 10791-5:1998(E) Contents Page 1 Scope 2 Normative references 1 3 Preliminary remarks 2 3.1 Measuring units 2 3.2 Reference to ISO 230-1 and ISO 230-2 2 3.3 Axes coding 2 3.4 Tests to be performed 2 3.5 Measuring instruments 3 4 Repeatability of positioning of individual pallets on the machine 3 4.1 Location of instruments 3 4.2 Measurement procedure 3 4.3 Formulae for calculating the deviations from individual readings 4 4.4 Tolerances 4 4.5 Checking and measuring instruments 4 4.6 Reference to ISO 230-2 5 4.7 Measured deviations 5 5 Positioning accuracy of a batch of pallets relative to a pallet receiver 6 5.1 Location of instruments 6 5.2 Formulae for calculating the deviations from individual readings 6 5.3 Tolerances 6 5.4 Checking and measuring instruments 6 5.5 Reference to ISO 230-2 6 5.6 Measured deviations 6 Annex A (informative) Bibliography 8 @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and International Organization for Standardization Casepostale56·CH-1211Geneve20·Switzerland [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland Copyright International Organization for Standardization Not for Resale @ ISO ISO 10791-5:1998(E) Foreword IsO (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 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 collaborates closely with the International Electrotechnical Commission (lEC) on all matters of electrotechnical standardization. Draft International Standards adopted 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 10791-5 was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 2, Test conditions for metal cutting machine tools. IsO 10791 consists of the following parts, under the general title Test conditions for machining centres: axis) - Part 2: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z axis) Part 3: Geometric tests for machines with integral universal heads with horizontal primary rotary axis (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 pallets Part 6: Accuracy of feeds, speeds and interpolations -Part 7: Accuracy of a finished test piece Part 8:Evaluation of contouringperformance in the three coordinate planes Part 9: Evaluation of the operating times of tool change and pallet change Part 1o:Evaiuationofthe thermai distortions Part11:Evaluationofthenoiseemission Part12:Evaluationof thevibrationseverity Annex A of this part of ISO 10791 is for information only. Copyright Intern onal Organization for Standardization ii