ISO 22705-2:2023

Springs — Measurement and test parameters — Part 2: Cold formed cylindrical helical extension springs

This document specifies the measurement and test methods for general characteristics of cold formed helical extension springs made from round wire, excluding dynamic testing.

Ressorts — Mesures et paramètres d'essai — Partie 2: Ressorts hélicoïdaux de traction cylindriques formés à froid

General Information

• Status: Published
• Publication Date: 06-Feb-2023
• ICS: 21.160 - Springs
• Technical Committee: ISO/TC 227 - Springs
• Drafting Committee: ISO/TC 227/WG 3 - Measurement and test parameters for extension spring
• Current Stage: 6060 - International Standard published
• Start Date: 07-Feb-2023
• Due Date: 08-Oct-2022
• Completion Date: 07-Feb-2023

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 22705-2
First edition
2023-02
Springs — Measurement and test
parameters —
Part 2:
Cold formed cylindrical helical
extension springs
Ressort - Mesures et paramètres d'essai —
Partie 2: Ressort hélicoïdal de traction cylindrique formé à froid
Reference number
© ISO 2023
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
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 . 2
4 Environmental conditions . 3
5 Qualifications of the person(s) performing the work . 3
6 Geometries of guiding and supporting devices . 3
7 Measuring and testing equipment . 3
8 Measurement and test parameter for technical cold formed cylindrical extension
springs . 4
8.1 Free length (L ) . 4
8.1.1 General . 4
8.1.2 Type of characteristic . 4
8.1.3 Measuring and/or testing equipment . 4
8.1.4 Conditions of measurement and testing . 4
8.1.5 Method of measurement and testing . 4
8.1.6 Test location on the product. 7
8.2 Body length (L ) . 7
B
8.2.1 General . 7
8.2.2 Type of characteristic . 7
8.2.3 Measuring and/or testing equipment . 8
8.2.4 Conditions of measurement and testing . 8
8.2.5 Method of measurement and testing . 8
8.2.6 Test location on the product. 10
8.3 Spring hook length (L ) . 10
H
8.3.1 General . 10
8.3.2 Type of characteristic . 10
8.3.3 Measuring and/or testing equipment . 11
8.3.4 Conditions of measurement and testing . 11
8.3.5 Method of measurement and testing . 11
8.3.6 Test location on the product. 13
8.4 Hook opening (m) . 13
8.4.1 General .13
8.4.2 Type of characteristic . 13
8.4.3 Measuring and/or testing equipment . 14
8.4.4 Conditions of measurement and testing . 14
8.4.5 Method of measurement and testing . 14
8.4.6 Test location on the product. 15
8.5 Outside diameter (D ). 15
e
8.5.1 General .15
8.5.2 Type of characteristic . 15
8.5.3 Measurement and/or testing equipment . 16
8.5.4 Conditions of measurement and testing . 16
8.5.5 Method of measurement and testing . 16
8.5.6 Test location on the product. 20
8.6 Inside diameter (D ) .20
i
8.6.1 General .20
8.6.2 Type of characteristic . 20
8.6.3 Measuring and/or testing equipment . 20
8.6.4 Conditions of measurement and testing . 20
iii
8.6.5 Method of measurement and testing . 21
8.6.6 Test location on the product. 23
8.7 Total number of coils (n ), number of active coils (n) and coil direction .23
t
8.7.1 General .23
8.7.2 Type of characteristic . 23
8.7.3 Measuring and/or testing equipment . 25
8.7.4 Conditions of measurement and testing . 25
8.7.5 Method of measurement and testing . 25
8.7.6 Test location on the product. 26
8.8 Bending radius (r) .26
8.8.1 General . 26
8.8.2 Type of characteristic . 26
8.8.3 Measuring and/or testing equipment . 27
8.8.4 Conditions of measurement and testing . 27
8.8.5 Method of measurement and testing . 27
8.8.6 Test location on the product. 27
8.9 Spring load (F) .28
8.9.1 General .28
8.9.2 Type of characteristic .28
8.9.3 Measuring and/or testing equipment .28
8.9.4 Conditions of measurement and testing .28
8.9.5 Method of measurement and testing .28
8.9.6 Test location on the product.29
8.10 Spring pitch (p) / distance between the coils (u) .29
8.10.1 General .29
8.10.2 Type of characteristic .29
8.10.3 Measuring and/or testing equipment .30
8.10.4 Conditions of measurement and testing .
...