Modified identification method of geometric error for translational axis of CNC machine tools

被引：0
|
作者：
Dai K. [1 ,2 ]
Zhang S. [1 ,2 ]
Shu Y. [1 ,2 ]
Zhang W. [3 ]
Zhang Z. [3 ]
机构：
[1] Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE, School of Mechanical Engineering, Shandong University, Jinan
[2] National Key Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan
[3] Shandong DEED Precision Machine Tool Co., Ltd., Jining
来源：
Jisuanji Jicheng Zhizao Xitong/Computer Integrated Manufacturing Systems, CIMS | 2021年 / 27卷 / 05期
关键词：
CNC machine tool; Geometrical error; Modified identification method; Nine-line method;
D O I：
10.13196/j.cims.2021.05.008
中图分类号：
学科分类号：
摘要：
The nine-line method is one of the common methods for measuring the geometric error of translational axis of CNC machine tools, but there are difficulties in tracing the source of the error and poor identification stability in practical applications. In view of these problems, the measurement process and identification principle of the nine-line method were systematically analyzed, and an improved identification method was proposed. Utilizing the dependency relationship between the geometric error and the measurement coordinate system, the position of the coordinate system was reasonably arranged, which was ensure the traceability value of the identification result, and beneficial to guide the machining and debugging of the machine tool. Meanwhile, the matrix structure and parameters of the identification model were optimized by increasing the measurement dimensions and searching for the optimal measurement point combination to improve the stability of the identification. The results of simulation analysis and measurement experiments showed that the improved identification method exhibited higher resolution accuracy and significantly enhanced identification stability. © 2021, Editorial Department of CIMS. All right reserved.
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页码：1319 / 1327
页数：8
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