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Detection and control of non-linear errors in 5-axis machining
Wang Dan, Chen Zhitong, Chen Wuyi*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Non-linear error is an important source of the machining error in multi-axis numerical controlled machining and it is unavoidable. A new strategy to deal with the non-linear error was proposed based on the analysis of former work. In the new strategy the tool positions with large non-linear errors were found out by detecting the movements of rotatory axes of the 5-axis machine tool and then the non-linear errors were compensated by linear interpolation. Comparison work between the original data and compensated data was done and the results show that the proposed strategy could notablely reduce the non-linear error. The strategy proposed could deal with non-linear errors of both general type and the special type which occur at singular position of the machine tool. Simulation results indicate the simplicity and feasibility of the strategy.
Keywords�� machining   interpolation   error detection   machine tools     
Received 2007-08-02;
Fund:

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About author: �� ��(1982-),��,�ӱ�������,��ʿ��,wangpick@163.com.
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����,��־ͬ,����һ.����ӹ��з��������ļ��ʹ�����[J]  �������պ����ѧѧ��, 2008,V34(09): 1003-1006
Wang Dan, Chen Zhitong, Chen Wuyi.Detection and control of non-linear errors in 5-axis machining[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(09): 1003-1006
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