滚动直线导轨校直压头与支撑结构优化

Optimized for Indenter and Supporting Structure of Rolling Linear Guide Straightening

依据弹塑性变形原理,分析了导轨在压力校直过程中的变形情况,在现有基于初始弯曲曲率的导轨校直行程计算公式以及导轨校直过程中挠曲线变形方程的基础上,对全自动导轨校直机的压头与支撑进行了优化设计,通过增加圆弧结构,减少压头支撑变形,提高校直质量;通过ANSYS软件对校直过程进行有限元仿真,发现优化后,压头支撑变形减小到了优化前的36%,导轨直线度误差减小到了优化前的30%,从而证明该优化结构更适用于全自动导轨校直机。

Based on the principle of elastic-plastic deformation, this paper analyzes the deformation of guide rail in the process of pressure straightening.According to the existing formula of guide rail straightening stroke based on initial bending curvature and the deformation equation of deflection curve in the process of guide rail straightening theoretical calculation, the pressure head and support of automatic rail straightening machine are optimized.By adding arc structure, the deformation of pressure head support is reduced and the straightening quality is improved.Finally, the finite element simulation of the straightening process is carried out by ANSYS software.It is found that after optimization, the deformation of the pressure head support is reduced to 36% of that before optimization, and the straightness error of the guide rail is reduced to 30% of that before optimization, which proves that the optimized structure is more suitable for the automatic guide rail straightening machine.