Kinematics Constrained Toolpath Planning for Five-Axis Machines

Authors:
Tao Ye;Cai-Hua Xiong
Affiliations:
State Key Lab of Digital Manufacturing Equipment and Technology of China, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China 430074;State Key Lab of Digital Manufacturing Equipment and Technology of China, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China 430074
Venue:
ICIRA '08 Proceedings of the First International Conference on Intelligent Robotics and Applications: Part II
Year:
2008

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Abstract

This paper presents a new general toolpath planning method which considers two important types of constraints: the kinematics constraint and the geometric feature constraints. The contact kinematics theory for rigid bodies is used to incorporate the two types of constraints into our optimization framework. The objective is to maximize the machining efficiency. The proposed method consists of three stages: establishing the mapping between the tool feeding speed with surface curvature, the orientation of the tool and the kinematics of machines; identifying the optimal cutting direction by solving a constrained nonlinear programming problem in the parametric domain; generating streamline-like toolpath and mapping it back to the surface. An example using our toolpath generation method is given to demonstrate its effectiveness.