Application of projection pursuit regression to thermal error modeling of a CNC machine tool

被引:1
|
作者
Guo Qianjian
Yang Jianguo
机构
[1] Shandong University of Technology,Shandong Provincial Key Laboratory of Precision Manufacturing and Non
[2] Shanghai Jiaotong University,traditional Machining
[3] Shandong University of Technology,School of Mechanical Engineering
关键词
Thermal error modeling; Project pursuit regression; NC machine tool; Error compensation;
D O I
暂无
中图分类号
学科分类号
摘要
Thermal errors are the major contributor to the dimensional errors of a workpiece in precision machining. Error compensation technique is a cost-effective way to reduce thermal errors. Accurate modeling of errors is a prerequisite of error compensation. In this paper, a thermal error model was proposed by using projection pursuit regression (PPR). The PPR method improves the prediction accuracy of thermal errors in the computer numerical control (CNC) turning center. A thermal error compensation system was developed based on the PPR model, and which has been applied to the CNC turning center in daily production. The results show that the thermal drift in workpiece diameter has been reduced from 34 to 5 μm.
引用
收藏
页码:623 / 629
页数:6
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