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�������պ����ѧѧ�� 2002, Vol. 28 Issue (3) :305-308    DOI:
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Interference-Free Toolpath Generation of Rotationally Free Surfaces in Four-Axis NC Machining
WU Li-ping, SHI Fa-zhong, CHEN Wei-dong, ZHU Xin-xiong*
Beijing University of Aeronautics and Astronautics, School of Mechanical Engineering and Automation

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Abstract�� Four-axis NC machine tools with rotation table are most suitable for the machining of rotationally complicated compound free form surfaces. To solve the interference problem in four-axis NC machining, the guard surface concept widely used in 3-axis machining was introduced into four-axis NC machining, corresponding guard surface calculating method was presented. Based on offset surface model, an algorithm of interference-free toolpath generation in four-axis machining was developed. Case study showed that the algorithm works well on PC platform. A brief review on problems to be further studied was also given.
Keywords�� computer aided manufacturing   numerically controlled machine   rotationally free surface   free-interference toolpath.     
Received 2000-09-22;
About author: ����Ƽ(1969-),Ů,����������,��ʿ��,100083,����.
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����Ƽ, ʩ����, ������, ������.��ת������������޸��浶λ�켣����[J]  �������պ����ѧѧ��, 2002,V28(3): 305-308
WU Li-ping, SHI Fa-zhong, CHEN Wei-dong, ZHU Xin-xiong.Interference-Free Toolpath Generation of Rotationally Free Surfaces in Four-Axis NC Machining[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(3): 305-308
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