凸轮磨削的动态速度优化方法研究  

Study on Dynamic Speed Optimization Method for Cam Grinding

作　　者：隋振[1] 徐峰[1] 苏振东 SUI Zhen;XU Feng;SU Zhen-dong(College of Communication Engineering,Jilin University,Jilin Changchun130022,China)

机构地区：[1]吉林大学通信工程学院,吉林长春130022

出　　处：《机械设计与制造》2020年第5期127-130,共4页Machinery Design & Manufacture

基　　金：吉林省科技厅资金资助项目(201501031JC)。

摘　　要：凸轮作为一种复杂机械零件,加工过程中磨削精度与当量磨削厚度密切相关,而磨削效率却容易受到速度曲线的影响。为了在保证磨削效率的前提下提高磨削精度,基于凸轮磨削当量厚度与CTC原理,提出了凸轮磨削转速动态优化方法。在优化过程中首先以准恒线磨削速度为基础速度,接着把每圈的磨削过程看成一个周期,利用优化模型将前一磨削周期产生的误差量补偿于X轴,最后结合遗传算法将磨削补偿量重新叠加于C轴转速实现凸轮转速动态优化。仿真结果表明该方法使得进给轴速度变化平缓,凸轮轮廓精度也得到了进一步的提高。Cam As a complex mechanical part,the grinding accuracy is closely related to the equivalent grinding thickness,while the grinding efficiency is easily affected by the speed curve. In order to improve the grinding accuracy under the premise of ensuring grinding efficiency,based on the equivalent thickness of cam grinding and the principle of CTC,a dynamic optimization method of cam grinding speed is put forward in this paper. In the optimization process of the first quasi constant line speed based grinding speed,the grinding process of each circle as a cycle,using the optimization model before grinding cycle error compensation on the X axis,the amount of compensation to grinding superimposed on the C axis of the rotational speed of the cam speed dynamic optimization based on genetic algorithm. The simulation results show that the method makes the speed change of the feed shaft slow and the cam contour precision is further improved.

关 键 词：凸轮磨削 当量磨削厚度 CTC原理 动态优化 

分 类 号：TH16[机械工程—机械制造及自动化] TP273.4[自动化与计算机技术—检测技术与自动化装置]