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

被引：25
|
作者：
Guo Qianjian [1 ,2 ]
Yang Jianguo [3 ]
机构：
[1] Shandong Univ Technol, Sch Mech Engn, Zibo 255049, Peoples R China
[2] Shandong Univ Technol, Shandong Prov Key Lab Precis Mfg & Nontradit Mach, Zibo 255049, Peoples R China
[3] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2011年 / 55卷 / 5-8期
关键词：
Thermal error modeling; Project pursuit regression; NC machine tool; Error compensation; PART II; COMPENSATION; NETWORK; SYSTEM;
D O I：
10.1007/s00170-010-3114-4
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
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 mu m.
引用
收藏
页码：623 / 629
页数：7
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