塑壳断路器触头终压力的公差仿真分析

Tolerance simulation analysis of the contact terminate force for molded case circuit breaker

本文以塑壳断路器触头终压力为优化目标,以计算机辅助公差分析为基础,引入受力分析、尺寸敏感度分析和权重分析,优化影响触头终压力的相关尺寸公差及弹簧刚度系数。分析结果表明,相比以往的只有理论名义值的力值,在考虑力的公差分析以后,对于力的计算不仅有理论值,而且还有公差范围,并根据现有的工艺水平,提出了合理优化触头终压力的改进方案。

Taking the contact terminate force of molded case circuit breaker as the optimization objective, based on the computer aided tolerance analysis, the stress analysis, dimension sensitivity analysis and weight analysis are introduced to optimize the relative dimension tolerance and the stiffness coefficient of the contact terminate force. The analysis results show that, compared to the previous theory only nominal force value, after considering the stress tolerance analysis, calculation of force not only has theoretical value, but also the tolerance range, and according to the current process, put forward the improvement scheme to optimize the contact terminate force.