基于恒力控制的外圆纵向磨削参数优化方法研究

Research on Optimization Method of Cylindrical Longitudinal Grinding Parameters Based on Constant Force Control Strategy

摘要: 外圆纵向磨削加工参数的选取将直接影响机械产品的最终加工精度，因此对磨削参数进行优化是提高产品加工精度的关键环节。首先，对外圆纵向磨削加工精度的评价指标及其影响因素进行了研究。通过实验就磨削参数对加工精度的影响进行分析，得出磨削深度是影响加工精度的主要参数的结论。基于磨削力模型对磨削力与加工精度影响关系进行分析，据此，给出了基于恒力控制策略的磨削深度优化方法。最后，通过实验对磨削参数优化方法进行了验证，其中平均直径误差降低了37.76%，圆柱度误差降低了55.65%，为外圆纵向磨削加工磨削参数的确定与优化提供了重要参考。

Abstract: The selection of cylindrical longitudinal grinding parameters will directly affect the final machining accuracy of mechanical products. Therefore, the optimization of grinding parameters is the key link to improve the machining accuracy of products. Firstly, the evaluation index and its influencing fac-tors of the machining accuracy of cylindrical longitudinal grinding are studied. Through experi-ments, the influence of grinding parameters on machining accuracy is analyzed, and it is concluded that grinding depth is the main parameter affecting machining accuracy. Based on the grinding force model, the relationship between grinding force and machining accuracy is analyzed. Based on this, a grinding depth optimization method based on constant force control strategy is given. Finally, the optimization method of grinding parameters is verified by experiments. The average diameter error is reduced by 37.76% and the cylindricity error is reduced by 55.65%, which provides an important reference for the determination and optimization of grinding parameters in cylindrical longitudinal grinding.