Path planning of mechanical polishing process for freeform surface with a small polishing tool

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• 作者：Weiyang Lin ; Peng Xu ; Bing Li ; Xiaojun Yang
• 关键词：Mechanical polishing ; Small polishing tool ; Freeform surface ; Polishing path ; Removal function
• 刊名：Robotics and Biomimetics
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：1
• 期：1
• 全文大小：6053KB
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• 作者单位：Weiyang Lin (1) (2) (3)
  Peng Xu (1) (4)
  Bing Li (1)
  Xiaojun Yang (1)
  
  1. Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen University Town, Xili, Shenzhen, 518055, China
  2. School of Astronautics, Harbin Institute of Technology, Xidazhi Street, Harbin, 150001, China
  3. Mechanical Automation of Engineering, the Chinese University of Hong Kong,, NT Road, Shatin, 999077, Hong Kong
  4. Department of Industrial and Systems Engineering, the Hong Kong Polytechnic University, Yuk Choi Road, Kowloon, 999077, Hong Kong
  
• 刊物类别：Robotics and Automation; Systems Biology; Behavioral Sciences;
• 刊物主题：Robotics and Automation; Systems Biology; Behavioral Sciences;
• 出版者：Springer Berlin Heidelberg
• ISSN：2197-3768

文摘

Products with freeform surface are widely applied in industries, and the surface quality plays an important role in order to fulfill the targeted functions. As polishing path of small polishing tool affects the polishing removal function considerably, it is highly necessary to study the polishing path of freeform surface for obtaining good polishing efficiency and well-proportioned surface quality. By combining the Preston polishing removal function, the material removal model of small polishing tool under the control of constant polishing force and pressure is established. Based on this model, the material removal functions of scan line, Archimedean spiral, and Hilbert fractal polishing path are derived. The simulation results show that the Hilbert fractal polishing path has the best comprehensive performance. By using the projection relation of differential geometry, the optimal path generation algorithm of the Bézier surface based on Hilbert fractal polishing path is established. The polishing experiments are conducted on a self-developed polishing machine which is based on a parallel manipulator. The experimental results demonstrate that the surface roughness is improved from level 9 to level 11. Keywords Mechanical polishing Small polishing tool Freeform surface Polishing path Removal function