凸轮磨削的仿形跟踪误差补偿

为提高凸轮磨削的加工精度, 减小凸轮的轮廓误差, 并进一步提高磨削系统的鲁棒性, 采用了新的误差补偿方法--仿形跟踪误差补偿, 将实际的仿形跟踪误差值补偿到X 轴的给定数值序列。运用Matlab 搭建了两轴联动反馈系统, 并设计模糊PID(Proportional-Integral-Derivative)控制器以实现对系统的在线补偿。采用一种形状较难加工的凸轮片作为实验对象验证补偿效果和控制器的性能。仿真实验结果表明, 该方法不仅能有效减小凸轮的轮廓误差, 简化了计算过程, 并且使系统的响应速度加快, 与传统PID 控制器相比还具有较好的鲁棒性。

Profile Tracking Error Compensation for Cam Grinding

To improve the precision of cam grinding machining, reduce the cam contour error, and improve the robustness of the system, a new error compensation method is adopted. It is named profiling tracking error compensation, in which the actual profiling tracking error compensate the series values of X axis. The two axes linkage feedback system is established by using Matlab, and the fuzzy PID(Proportional-Integral-Derivative) controller is designed to realize online compensation for the system. The cam used in the simulation experiment is difficult to process so as to verify compensation effects and the performance of the controller. The simulation experimental results show that this method can effectively reduce the cam contour error, simplify the calculation process, and improve the response speed of the system. Compared with the traditional PID controller, it has better robustness.