BS 8726-2:2002
$142.49
Cylindrical helical springs made from rectangular and square section wire and bar. Guide to calculation and design – Torsion springs
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 24 |
This British Standard provides guidance on the design of parallel sided helical torsion springs manufactured from rectangular and square section wire and bar.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Contents |
| 5 | 1 Scope 1.1 Limitation on material section dimensions 2 Normative references 3 Terms, definitions and symbols 3.1 Terms and definitions 3.2 Symbols |
| 6 | 4 General 5 Methods of calculation 5.1 Stress correction factor |
| 7 | 5.2 Stress 5.3 Torsional rate 5.4 Torsion spring legs |
| 8 | Figure 1 Forms of legs |
| 9 | Figure 2 Conventions for describing relative leg orientation 5.5 Body length |
| 10 | 6 Tolerances 6.1 General 6.2 Dimensional tolerances in the free state when torque testing is not specified |
| 11 | Table 1 Calculated free relative leg orientation tolerance (± degrees) 6.3 Dimensional tolerances in the free state when torque testing is to be performed 6.4 Property tolerances |
| 12 | 7 Specifying springs for general purposes 7.1 General 7.2 Method one (customer design) |
| 13 | Figure 3 Data sheet 1 |
| 14 | Figure 4 Direction of coiling |
| 16 | Figure 5 Example torque testing layout |
| 17 | 7.3 Method two (application for spring design) using Data Sheet 2 |
| 18 | Figure 6 Data sheet 2 |
| 19 | 8 Methods of testing 8.1 General 8.2 Dimensional tests |
| 20 | 8.3 Property tests |
| 21 | 8.4 Performance verification |
| 22 | Annex A (informative) Modulus of elasticity of some materials Table A.1 Modulus of elasticity values Annex B (informative) Typical tolerances on rectangular section material (informative) Typical tolerances on rectangular section material Untitled Typical tolerances on rectangular section material |
