中国机械工程 ›› 2010, Vol. 21 ›› Issue (19): 2318-2321.

• 机械基础工程 • 上一篇    下一篇

圆柱扭转弹簧扭矩计算方法的改进

李宝福;刘平芳;樊俊伟
  

  1. 上海大学,上海,200072
  • 出版日期:2010-10-10 发布日期:2010-10-20

A Revised Solution for Moment-deflection Relation of Torsion Spring

Li Baofu;Liu Pingfang;Fang Junwei
  

  1. Shanghai University, Shanghai, 200072
  • Online:2010-10-10 Published:2010-10-20

摘要:

对圆柱螺旋扭转弹簧组件进行有限元接触分析,模拟了扭转弹簧在扭转变形过程中弹簧丝、弹簧座和芯轴之间的相互作用。模拟分析表明,随着扭转弹簧和芯轴之间接触区的演变,扭转弹簧的扭转变形存在明显的阶段性。根据模拟结果,按弯曲梁理论推导出了扭转弹簧的分段线性扭矩-转角公式。提出的圆柱螺旋扭转弹簧扭矩计算方法在自动张紧轮扭转弹簧的设计中取得了满意的效果。与不考虑芯轴的支撑作用的传统设计方法相比,该计算方法具有更高的精度。

关键词:

Abstract:

The interaction between a helical torsion spring and its accessories (spring seats and spindle) was investigated with finite element contact analysis. The result of simulation shows that the twist deformation of the spring can be divided approximately into several stages by the variety of contact regions between the spring parts. Accordingly, a piecewise linear relation of moment-deflection was established based on elementary theory of beam. It has been proved that the equations present herein are more precise than the classical algorithms which take no account of the effect of spring accessories.

Key words: helical torsion spring, auto-tension pulley, finite element contact analysis, twist deformation

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