大型机床热误差检测及建模  

Thermal Error Measuring and Modeling of Large Machine Tool

作　　者：章婷[1,2] 

机构地区：[1]南京工程学院机械学院,江苏南京211167 [2]南京航空航天大学机电学院,江苏南京210016

出　　处：《西昌学院学报（自然科学版）》2011年第3期34-35,43,共3页Journal of Xichang University(Natural Science Edition)

基　　金：南京工程学院校级科研青年基金项目资助(项目编号:QKJC2009001)

摘　　要：以大型机床热误差补偿为研究目标、以大型龙门机床为研究对象,开发了温度热误差检测系统,实测了机床的热误差和温度场,并利用热误差及温度变量间的相关性,选取了建模温度变量,采用多元回归,建立了Z向热误差模型,并预测了后续热误差的变化。预测结果有效地将热误差带宽从60μm降为18μm,有效证明预测的可行性。On the platform of large gantry machine tool, temperature and thermal error measuring system was developed with the aim to compensate thermal error of large machine tool. Then thermal error and temperature field were measured and temperature variables for modeling were selected based on the analysis of correlation between thermal errors and temperatures. Finally, thermal error model of Z direction was set up with multi-variable regression and the subsequent thermal error variation was predicted with the model. The results show that the model can effectively reduce thermal error from 60 μ m to 18 μ m. Thus the feasibility of the model is verified.

关 键 词：机床 检测 建模 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]