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Third-order point contact approach for five-axis sculptured surface machining using non-ball-end tools (II): Tool positioning strategy

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Abstract

Based on the mathematical model describing the third-order approximation of the cutter envelope surface according to one given cutter location (CL), a tool positioning strategy is proposed for efficiently machining free-form surfaces with non-ball-end cutters. The optimal CL is obtained by adjusting the inclination and tilt angles of the cutter until its envelope surface and the design surface have the third-order contact at the cutter contact (CC) point, which results in a wide machining strip. The strategy can handle the constraints of machine joint angle limits, global collision avoidance and tool path smoothness in a nature way, and can be applied to general rotary cutters and complex surfaces. Numerical examples demonstrate that the third-order point contact approach can improve the machining strip width greatly as compared with the recently reported second-order one.

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Authors and Affiliations

  1. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, 200240, China

    LiMin Zhu

  2. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China

    Han Ding & YouLun Xiong

Authors
  1. LiMin Zhu
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  2. Han Ding
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  3. YouLun Xiong
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Correspondence to LiMin Zhu.

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Zhu, L., Ding, H. & Xiong, Y. Third-order point contact approach for five-axis sculptured surface machining using non-ball-end tools (II): Tool positioning strategy. Sci. China Technol. Sci. 53, 2190–2197 (2010). https://doi.org/10.1007/s11431-010-3184-4

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  • DOI: https://doi.org/10.1007/s11431-010-3184-4

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