ISO/TR TECHNICAL REPORT 17243-2 First edition 2017-08 Machine tool spindles - Evaluation of spindle vibrations by measurements on non-rotating parts Part 2: Direct-driven spindles and belt-driven spindles with rolling element bearings operating at speeds between 6o0 r/ min and 30 000 r/min Broches pour machines-outils - Evaluation des vibrations des brochesparmesuragesurlespartiesnontournantes Partie 2: Broches a entrainement direct et broches a entrainement par courroie a roulements a billes opérant a des vitesses entre 600 r/ min et 30 000 r/min Reference number ISO/TR 17243-2:2017(E) os1 @ IS0 2017 IS0/TR 17243-2:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ii @ IS0 2017 - All rights reserved IS0/TR 17243-2:2017(E) Contents Page Foreword ..V 1 Scope .1 2 Normative references 3 Terms and definitions 4 Preliminary operations. 3 4.1 General .3 4.2 Processload 4.3 Spindlespeed .3 4.4 Thermal conditions. 4.5 Spindle position and orientation 4 4.6 Tool or workpiece balancing. ..4 4.6.1 General 4 4.6.2 Spindle vibration measurements with a tool/workpiece mounted in the spindle 4 4.6.3 Spindle vibration measurements without tool/workpiece. .4 4.7 Spindle chuck .5 4.8 Spindle cooling 4.9 Drawbar .5 4.10 Background vibration ..5 4.11 Idle operation. .5 5 Measurement and operational procedures .5 5.1 Measuring instruments ..5 5.2 Measurement locations/directions 6 5.2.1 General. ..6 5.2.2 Naming convention for measurement locations 1 5.3 Sensor mounting procedures. .7 6 Evaluation parameters. ..8 Vibration velocity parameter. 6.1 6.1.1 General .8 6.1.2 Spindles with maximum speed between 6 000 r/min and 30 000 r/min 6.1.3 Spindles with maximum operating speed below 6 000 r/min .9 6.2 Vibration acceleration parameter ...9 7 Spindle classification .10 7.1 General .10 7.2 Classification according to rated power. ..10 7.3 Classification according to maximum spindle speed ..10 7.4 Classification according to bearing type. 10 8 Evaluation .11 8.1 General. .11 8.1.1 Overview. .11 8.1.2 Measurement uncertainty .11 8.2 Criterion I: vibration magnitude .11 8.2.1 General .11 8.2.2 Evaluation zones. .12 8.2.3 Exemplary evaluation zone boundaries .12 8.3 Criterion II: change in vibration magnitude .12 8.4 General zone boundaries. .12 8.5 Examples of evaluation zone boundary values .13 8.6 Operational limits. .14 8.6.1 General. ..14 8.6.2 Setting of alerts. ..14 8.6.3 Setting of alarms ..14 8.6.4 Setting of the threshold for shutdown. .15 @ IS0 2017 - All rights reserved iii