飞针测试机侧向驱动零件的有限元分析与结构优化

Finite element analysis and structural optimization of lateral drive part of flying probe tester

讨论飞针测试机侧向驱动部分的结构设计,选取关键零件Y轴连接板,首先分析侧向驱动部分的连接和运动,建立有限元模型。钢密度大于铝合金,其刚性和热稳定性均优于铝合金,通过静力学分析去除钢制连接板受力较小部位、减小厚度等措施,减轻连接板质量,保证在相同外力作用下,X方向最大变形量比铝板大5%,质量最多比铝板重1 kg。最后通过热分析,证明钢制连接板的热稳定性优于铝制连接板。

This paper discusses the structural design of the lateral drive part of the flying probe tester, and selects its key component Y-axis connecting plate. First analyze its connection and movement, then establishe its finite element model. The density of steel is greater than that of aluminum alloy, but its rigidity and thermal stability are better. Through static analysis, remove the parts with lower stress on the steel connecting plate, reduce its thickness and so on to reduce its mass, and ensure that under the same external force, the maximum deformation in the X direction is at most 5% larger than that of aluminum alloy, and the mass is at most 1 kg heavier than that of aluminum alloy;Finally, through thermal analysis, it can be proved the thermal stability of steel connecting plate is better than that of aluminum alloy.