摘要
切削力对加工质量和加工效率有着重要影响,针对切削力直接测量困难的问题,以高效稳定切削为目标,提出一种主轴恒力矩的自适应加工控制技术方案.以铣削加工为对象,在推导电磁力矩与切削参数关系的基础上应用Simulink建立了基于主轴电机矢量控制的自适应铣削加工模型,以恒电磁力矩为目标,采用模糊自适应控制策略对加工模型开展仿真实验,同时开发了自适应加工系统进行切削实验,两种实验结果均表明所提方法相较于传统的PID自适应加工方法具有更高加工效率、更好加工稳定性和更低的主轴负载波动.建立了虚实结合的自适应加工控制系统,有效降低了系统开发成本,虚实实验结果相互印证,提高了所提技术方案的可信度,该方案具有良好的工程参考价值.
Abstract
Cutting force has a significant impact on machining quality and efficiency.In response to the dif-ficulty of directly measuring cutting force,an adaptive machining control technology scheme with constant spindle torque is proposed with the goal of efficient and stable cutting.Based on the relationship between e-lectromagnetic torque and cutting parameters,an adaptive milling machining model based on spindle motor vector control was established by Simulink.With constant electromagnetic torque as the target,fuzzy adap-tive control strategy was adopted to carry out simulation experiments on the machining model,and an adap-tive machining system was developed for cutting experiments.Both experimental results show that the pro-posed method has higher machining efficiency,better machining stability and lower spindle load fluctuation than the traditional PID adaptive machining method.A virtual-real adaptive machining control system is es-tablished,which effectively reduces the development cost of the system.The virtual-real experimental re-sults confirm each other and improve the reliability of the proposed technical scheme.The scheme has good engineering reference value.
基金项目
福建省科技计划项目(2022H6017)
福建省科技重大专项专题项目(2021HZ024006)
NETL
NSTL
万方数据