ISO INTERNATIONAL STANDARD 22705-1 First edition 2021-03 Springs Measurement and test parameters - Part 1: Cold formed cylindrical helical compression springs Ressort-Mesuresetparametresd'essai- Partie 1: Ressort helicoidal de compression cylindrique forme a froid Referencenumber IS022705-1:2021(E) ISO @ ISO 2021 IS022705-1:2021(E) COPYRIGHTPROTECTEDDOCUMENT IS02021 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 below or Iso's memberbody in the country ofthe requester. ISO copyright office CP 40i : Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22.749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved IS022705-1:2021(E) Contents Page Foreword ..V 1 Scope ..1 2 Normative references 3 Terms, definitions, symbols and abbreviated terms. 3.1 Terms and definitions 1 3.2 Symbolsandabbreviatedterms 4 Environmental conditions 5 Qualificationsoftheperson(s)performingthework 6 Geometries of guiding and supporting devices 7 Measuring and testing equipment 8 Measurementandtest parameter for technical cold formed cylindrical .4 compressionsprings 8.1 Free length (Lo) ..4 8.1.1 General 4 8.1.2 Type of characteristic ..4 8.1.3 Measuringand/ortesting equipment 4 .5 8.1.4 Conditions ofmeasurementand testing 8.1.5 Method of measurement and testing .5 8.1.6 Test location on the product. .6 8.2 Outside diameter (De) .6 8.2.1 General. .6 8.2.2 Type of characteristic 6 8.2.3 Measurementand/ortestingequipment .7 8.2.4 Conditions of measurement and testing .7 8.2.5 Method of measurement and testing .7 8.2.6 Test location on the product. ..9 8.3 Inside diameter (D) .10 8.3.1 General. .10 8.3.2 Type of characteristic .10 8.3.3 Measuringand/ortesting equipment ..10 8.3.4 Conditions ofmeasurementand testing ..10 8.3.5 Method of measurement and testing .10 8.3.6 Test location on the product. ..12 8.4 Total number of coils (nt), number of active coils (n) and coil direction .13 8.4.1 General ..13 8.4.2 Type of characteristic .13 8.4.3 Measuring and/or testing equipment ..15 8.4.4 Conditions of measurement and testing .15 8.4.5 Method of measurement andtesting ..15 8.4.6 Test location on the product. .16 8.5 Applied end coils ..16 8.5.1 General. ..16 8.5.2 Type of characteristic .16 8.5.3 Measuringand/ortesting equipment. ..17 8.5.4 Conditionsofmeasurementandtesting .17 8.5.5 Method of measurement and testing ..17 8.5.6 Testlocation on the product. .17 Solid length (L)/solid force (F) 8.6 ..17 8.6.1 .17 General 8.6.2 Type of characteristics. ..17 8.6.3 Measuring and/ortestingequipment .18 8.6.4 Conditions of measurement and testing .18 @IS0 2021-All rights reserved ili