摘要
文献调研了占比(40~70)%的热误差是影响数控机床加工精度的最主要因素,探讨了研究对象非球面数控磨床的结构特征,分析了非球面数控磨床热误差存在的基本形式,提出了基于统计学理论的多元线性回归模型算法进行热误差建模的具体方案,针对非球面数控磨床磨轮轴轴向热误差进行了多元线性回归建模,并构建了热误差补偿系统,实验表明,研究的基于多元线性回归模型算法和热误差补偿系统可以有效的实施非球面数控磨床磨轮轴轴向热误差补偿,补偿后残差方差降至4.216e-002,可以满足非球面数控磨床精密磨削需求。
The literature investigates that thermal error,which accounts for(40~70)%,is the most important factor affecting the machining accuracy of CNC machine tools.A specific scheme for thermal error modeling based on the multiple linear regression model algorithm based on statistical theory is presented.The multiple linear regression modeling is carried out for the axial thermal error of the grinding wheel shaft of the aspheric CNC grinding machine,and the thermal error compensation system is constructed.The experiments show that.The research based on the multiple linear regression model algorithm and thermal error compensation system can effectively implement the axial thermal error compensation of the grinding wheel shaft of the aspheric CNC grinding machine,and the residual variance after compensation is reduced to 4.216e-002,which can meet the precision grinding of the aspheric CNC grinding machine.need.
作者
胡月
李欣
刘树伟
HU Yue;LI Xin;LIU Shu-wei(Physics and Electronic Engineering,Hebei Normal University for Nationalities,Hebei Chengde 067000,China)
出处
《机械设计与制造》
北大核心
2024年第10期183-186,197,共5页
Machinery Design & Manufacture
基金
承德市2022科技计划项目(202201A061)。
关键词
热误差
非球面数控磨床
磨轮轴
多元线性回归建模
误差补偿
Thermal Error
Aspheric CNC Grinding Machine
Grinding Wheel Shaft
Multiple Linear Regression Modeling
Error Compensation