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Volume 38 Issue 8
Aug.  2012
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Journal of Beijing University of Aeronautics and Astronautics  > 2012  >  38(8): 1118-1123.
Huang Wei, Chen Zhitong, Chen Wuyi, et al. Principle of machining variant curvature blending surfaces with counter torus cutter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(8): 1118-1123. (in Chinese)
Citation: Huang Wei, Chen Zhitong, Chen Wuyi, et al. Principle of machining variant curvature blending surfaces with counter torus cutter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(8): 1118-1123. (in Chinese)
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Principle of machining variant curvature blending surfaces with counter torus cutter

  • School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 29 Dec 2009
  • Publish Date: 30 Aug 2012
    Abstract
  • Based on the stripe-width-maximization machining theory and the principle of global curvature fitting, a novel counter torus cutter, which uses the inner surface of torus as the cutting edge, was proposed to machine the leading and trailing edge of a turbine blade. Through optimizing the raw angle of the counter torus cutter with a circular generatrix of given radius, the envelope surface of the tool can closely approximate the leading and trailing edge surface of the turbine blade with variant curvature, which can be machined by maximizing the machining strip width and minimizing the number of tool paths under a given tolerance. An experiment to machine the leading and trailing edge of an aero-engine turbine blade was carried out. Results illustrate that the proposed method could greatly improve the machining quality of the leading and trailing edge, and the machining strip-width using a counter torus cutter is 5 times larger than that using a ball nose cutter.

     

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    • References(14)
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