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Title: Control method of tool axis vector based on kinematics characteristics for five-axis NC machining

Authors: Jian-wei Ma; Ji-yun Qin; Zhen-yuan Jia; Fu-ji Wang; Li-chao Ding

Addresses: Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China

Abstract: The complexity of tool path in the machining of complex curved surface is often accompanied by the large change of tool axis vector and the large change of tool axis vector can cause larger machining error and is easily beyond the restrictions of angular velocity and angular acceleration for the rotation angle of swing head or turntable of machine tool under a constant feed speed. The optimisation of the planning for the tool axis vector is very important based on the kinematics characteristics. The control method of tool axis vector based on the kinematics characteristics for five-axis NC machining of complex curved surface is studied. Experimental results show that the planning of tool axis vector based on the kinematics characteristics for five-axis NC machining can guarantee the smooth movement of the rotation axis and the machining process for complex curved surface can be more stable and reliable.

Keywords: tool axis vector; kinematics characteristics; five-axis machining; NC machining; angular velocity; curved surfaces; optimisation; rotation axis.

DOI: 10.1504/IJMMS.2015.071668

International Journal of Mechatronics and Manufacturing Systems, 2015 Vol.8 No.1/2, pp.49 - 62

Available online: 14 Sep 2015 *

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