TECHNICAL ISO/TR REPORT 10064-1 Third edition 2019-09 Code of inspection practice - Part 1: Measurement of cylindrical gear tooth flanks Code pratique de réception - Partie 1: Mesure des flancs dentaires cylindriques Reference number IS0/TR 10064-1:2019(E) @ IS0 2019 IS0/TR 10064-1:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +4122 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0 2019 - All rights reserved IS0/TR 10064-1:2019(E) Contents Page Foreword .vi 1 Scope. 1 2 Normative references 1 3 Terms, definitions, symbols and abbreviated terms 1 3.1 Terms and definitions 1 3.2 Symbols and abbreviated terms. 1 4 General considerations. 5 4.1 Background 5 4.2 Required inspection information .5 4.3 Measurement selection. 5 4.3.1 Substitution of measurement methods 5 4.3.2 First piece inspection.. 6 4.3.3 Sampling and statistical process control 6 5 Conventions and measurement positions .6 5.1 General 6 5.2 Datum axis. 6 5.3 Left or right flank 6 5.4 Left hand or right hand helical gears 7 5.5 Numbering of teeth and flanks.. 8 5.6 Numbering of pitches 8 5.7 Number of pitches "k" in a deviation symbol subscript .8 Types of measuring equipment and principle 6 .8 6.1 General. 8 6.2 Measurement methods 14 6.2.1 Generative measurement methods 14 6.2.2 Non-generative measurement methods 16 6.2.3 Pitch measurement methods. 17 6.2.4 Hand-held pitch measuring devices. 18 6.2.5 Radial runout measurement 20 6.2.6 Computer tomography methods for small gears 20 6.2.7 Optical devices for small spur gears.. 21 6.3 Calibration of equipment. .21 6.4 Tooth thickness, differences between CNC/CMM and manual measurement 21 6.5 "In-process" gear measurement on manufacturing machines 22 6.6 Gear mounting. .23 6.7 Example output format from a CNC GMM. 23 6.7.1 General .23 6.7.2 Example evaluations of modified helices and profiles .26 7 Recommended measurement procedure and good measurement practice 27 7.1 Measurement procedure .27 7.2 Probe problems when measuring aluminium parts. 29 7.3 Suitable artefacts for calibration of measuring machines. 29 8 Inspection procedures for gears that are too large for gear inspection machines .30 8.1 General .30 8.2 Profile inspection using portable device. 30 8.2.1 Disassembly of segments. 30 8.2.2 Measurement by portable gear inspection device using coordinates .30 8.2.3 Profile inspection by gear tooth caliper. 31 8.3 Inspection of helix form deviation. .35 8.3.1 Inspection of helix form deviation on the gear cutting machine. .35 8.3.2 Straightness inspection using a cylinder. .36 8.3.3 Inspection of the tooth contact pattern .36 @ IS0 2019 - All rights reserved iii IS0/TR 10064-1:2019(E) 8.4 Inspection of the pitch .37 8.4.1 Calculation of pitch 37 8.4.2 Inspection using an automatic device on the cutting machine: inspection of the single circular pitch and the cumulative pitch deviation 37 8.4.3 Manual inspection: inspection of base pitch, Pb, and base pitch deviations, fpb ...38 8.5 Measuring tooth thickness .. 38 8.6 Measuring gear radial runout and axial runout of reference surfaces 38 9 Measurement analysis - Profile, helix, pitch and radial runout 38 9.1 Profile 38 9.1.1 Profile deviation. 38 9.1.2 Profile deviation diagram. 39 9.1.3 Evaluation of profile diagrams. 40 9.1.4 Algebraic signs of fHc fp and fa 41 9.1.5 Mean profile slope deviation, fHam 41 9.2 Helix. 42 9.2.1 General. 42 9.2.2 Helix deviation diagram 43 9.2.3 Evaluation