Geometric error measurement and integrated modeling for precision CNC machine tools of optical free-form surface

被引：0
|
作者：
Cheng Y.-P. [1 ]
Zhang E.-Z. [1 ]
Qi Y.-L. [2 ]
Lin J.-Q. [1 ]
机构：
[1] Institute of Electrical and Mechanical, Changchun University of Technology, Changchun
[2] Jilin Provincial Press and Publication Bureau of Radio and Television, Changchun
来源：
Zhang, En-Zhong (znz612@sina.com) | 1600年 / Chinese Academy of Sciences卷 / 25期
关键词：
Chebyshev polynomial; CNC machine tools; Error model; Geometric error;
D O I：
10.3788/OPE.20172513.0174
中图分类号：
学科分类号：
摘要：
In order to improve processing precision of independently developed precision CNC machine tools of optical free-form surface, geometrical error of the machine was measured and modeled. Geometric error of motion axis of precision CNC machine tools was measured by laser interferometer and basic geometric error term model was established according to Chebyshev polynomia. It was found that approximation level of basic geometric error model was high by comparing measured curves and matched curve. It is obtained by calculation that residual deviation bandwidth range of moving error of x, y and z axis is (0.63, 2.84) μm, and residual deviation bandwidth range of angle error is (0.39, 1.19) arc second, which shows that prediction precision of established model is high. The geometric error model of basic error was substituted into the model based on multi-body system theory to obtain integrated geometric error model under the operating condition of two-axis linkage. The modeling process is simple with easy program design and improves processing precision and efficiency of precision CNC of optical free-form surface. © 2017, Science Press. All right reserved.
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页码：174 / 182
页数：8
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