BS 8726-2-2002 矩形和方型线材和棒材制的圆柱形螺旋式弹簧.计算和设计指南.扭力弹簧

标准号：BS 8726-2-2002
中文标准名称：矩形和方型线材和棒材制的圆柱形螺旋式弹簧.计算和设计指南.扭力弹簧
英文标准名称：Cylindrical helical springs made from rectangular and square section wire and bar - Guide to calculation and design - Torsion springs
标准类型：J26
发布日期：2002/9/25 12:00:00
实施日期：2002/9/25 12:00:00
中国标准分类号：J26
国际标准分类号：21.160
适用范围：This British Standard provides guidance on the design of parallel sided helical torsion springs manufactured from rectangular and square section wire and bar. 1 Limitation on material section dimensions This standard applies only to springs made from rectangular section material where the ratio of radial dimension, b, to the axial dimension, h, termed the shape factor, m, is not greater than 2.5 and not less than 0.4. NOTE 1 This applies because, outside the shape factor range 2.5 to 0.4, it is difficult to coil a spring accurately. NOTE 2 There are numerous methods of calculating the parameters necessary for the design of springs and initially the designer is free to use any one of these. This standard differentiates between springs that have or have not been stress relieved after forming, designated group A springs, and springs, the material of which has undergone a structural change by heat treatment after forming, designated group B springs. This British Standard gives two methods of specifying springs for general purposes and one method of testing springs