摘要
数控机床主轴系统的性能直接影响其加工精度。热误差和回转误差作为主轴系统精度的两个关键指标,研究其多工况下误差变化规律与对应的调控参数优化方法对主轴系统精度的提升具有重要的应用价值。基于响应面(RSM)分析法,以获取的主轴系统热误差和回转误差数据为响应值,建立多工况下的主轴精度RSM模型,基于多目标遗传算法,研究多工况下的主轴系统调控参数优化方法,得到不同工况下的主轴系统最优运行参数,并在自主搭建的主轴精度调控实验台上进行了有效性验证。
The performance of CNC machine tool spindle system directly affects its machining accuracy,while thermal error and rotation error are two key indexes of spindle system accuracy,therefore,studying the error variation law and corresponding control parameter optimization method under multiple working conditions has important application value for improving the accuracy of spindle system.Based on the response surface(RSM)analysis method,taking the obtained thermal error and rotation error data of the spindle system as the response value,this paper establishes the spindle accuracy RSM model under multiple working conditions.Based on the multi-objective genetic algorithm,the optimization method of the regulation parameters of the spindle system under multiple working conditions is studied,obtaining the optimal operating parameters of the spindle system under different working conditions,whose effectiveness of the model is verified on the self built spindle precision control experimental platform.
作者
杨成杰
陈蔚芳
吕铭
YANG Chengjie;CHEN Weifang;LYU Ming(School of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《机械制造与自动化》
2023年第4期169-172,共4页
Machine Building & Automation
基金
国家自然科学基金项目(51775277)。
关键词
主轴系统
热误差
回转误差
响应面分析
多目标精度调控
spindle system
thermal error
rotation error
response surface analysis
multi-target precision control
