凸轮轴摆动磨削几何学建模及分析

为研究摆动磨削工艺对表面质量的影响机制，基于恒线速度磨削工艺，分析凸轮旋转一周时凸轮轴角速度和角加速度、砂轮进给速度和加速度的变化规律；对比分析摆动磨削与常规磨削时的接触长度和最大未变形磨屑厚度。结果表明：在不同的凸轮基圆速度下，凸轮轴转动的角速度和角加速度、砂轮进给速度和加速度呈线性增长趋势；摆动磨削可改善磨削表面的质量，且改善效果受磨削参数的影响；磨削深度对磨削表面质量有弱化作用；适当提高砂轮直径、砂轮转速、凸轮速度、摆动幅度、摆动频率可提高磨削表面质量。

Geometric Modeling and Analysis of Camshaft Oscillating Grinding

In order to study the influence mechanism of the swing grinding process on the surface quality, the changes of the angular velocity and angular acceleration of the camshaft, and the feed rate and acceleration of the grinding wheel were analyzed based on the constant linear velocity grinding process; the contact length and maximum undeformed debris thickness of swing grinding and conventional grinding were compared and analyzed. The results show that under different cam base circle speeds, the angular velocity and angular acceleration of the camshaft rotation, and the feed rate and acceleration of the grinding wheel increase linearly; swing grinding can improve the quality of the ground surface, and the effect is affected by the grinding parameters; the grinding depth has a weakening effect on the quality of the ground surface; the appropriate increase of grinding wheel diameter, grinding wheel speed, cam speed, swing amplitude, and swing frequency can improve the quality of the ground surface.