ISO INTERNATIONAL STANDARD 8688-1 First edition 1989-05-01 Tool life testing in milling - Part 1 : Face milling Essai de duree de vie des outils de fraisage - Partie 1 : Surfacage Reference number ISO 8688-1 : 1989 (E) ISO 8688-1 : 1989 (E) Foreword 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, govern- mental 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 adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8668-1 was prepared by Technical Committee ISO/TC 29 Small tools. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. ISO 1989 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56. CH-1211 Geneve 20 . Switzerland Printed in Switzerland ii ISO 8688-1 : 1989 (E) Contents Page Introduction Scope and field of application References Workpiece 2 3.1 Work material 2 Dimensions 3 Tool:Cutter 3 4.1 Dimensions and tolerances 3 4.2 Toolgeometry 3 4.3 Cutting edge and insert surface 3 4.4 Tool material 5 4.5 Mounting of the tool 5 5Cuttingfluid 5 6 Cutting conditions 5 6.1 Recommended cutting conditions 6.2 Other cutting conditions 6.3Location of the cutter 6.4 Cutting speed 6 7 Tool deterioration and tool-life criteria 6 7.1 Introduction 6 7.2 Definitions 6 7.3 Tool deterioration phenomena. 7.4 Tool deterioration phenomena used as tool-life criteria 12 7.5 Assessmentoftooldeterioration. 12