摘要
蜗卷弹簧是保证微电机有效工作的关键部件,为降低蜗卷弹簧扭转过程的最大应力,提高其安全系数,在Ansys Workbench环境下,详细分析蜗卷弹簧的扭转过程,得出簧片的转动位移、应力分布和簧片层间的相对滑动位移;在此基础上,通过对比分析,得出最优的设计参数,实现了降低蜗卷弹簧扭转过程的最大应力的目的。研究表明:通过增加弹簧圈数和加大过渡圆弧半径,可以将扭转过程中的最大应力由983.18 MPa降低为795.37MPa,降低了187.81 MPa,其安全系数由1.6提高到2.0,有效提高了产品的可靠性。
The flat spiral spring is a key component of the micro-motor. In order to reduce the maximum stress in torsion and improve the factor of safety, the torsion process of the flat spiral spring was simulated using Ansys Workbench soft- ware. The rotational displacement, the stress distribution and the relative sliding displacement between the layers of the flat spiral spring were computed, and the optimal design parameters for minimize maximum stress were obtained through compar- ison analysis. The results show that the maximum stress of the flat spiral spring decreases from 983.18 MPa to 795.37 MPa, reduces 187.81 MPa by increasing the coil number and transition arc radius, and factor of safety increases from 1.6 to 2. 0. The reliability of the flat spiral spring is significantly improved.
出处
《微特电机》
北大核心
2012年第7期43-45,共3页
Small & Special Electrical Machines
基金
贵州省科技计划资助(黔科合高G字(2011)4002)
关键词
蜗卷弹簧
扭转过程
转动位移
应力分布
相对滑动
可靠性
the flat spiral spring
torsion process
rotational displacement
stress distribution
relative sliding displacement
reliability
