西南石油大学学报(自然科学版)

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Tool Path Simulation of Envelope Milling of Complex Helical Surface

KUANG Yuchun1*, WU Longmei2, TU Junwen3, WU Yingqiang4, DONG Zongzheng1   

  1. 1. School of Mechatronic Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. Chengdu Jiuding Technology(group)Co. Ltd.,Chengdu,Sichuan 610100,China
    3. China Petroleum Technology and Development Corporation,Xicheng,Beijing 100009,China
    4. Department of Oilfield Development,Changqing Oilfield Company,PetroChina,Xi′ an,Shaanxi 751500,China
  • Online:2016-06-01 Published:2016-06-01

Abstract:

In order to reduce the machining error of complex helical surface,this paper studied the algorithm about tool path of
envelope milling by transforming the dynamic meshing relationship into the space geometry problems between milling- cutter
and workpiece through time discretization and spatial discretization in machining process based on numerical simulation method.
We build three-dimensional model of milling-cutter and workpiece surface of revolution,deduce the coordinate-transformation
matrix of meshing relationship between milling-cutter and workpiece,simplify the minimal directed distance between millingcutter
and workpiece into a two-dimensional problem,set up the simulation algorithm of tool-path of milling-cutter and finally
get the parameter information of NC codes. The machining process programmed on the obtained parameters proved to be able
to produce the helical surface with required precision. Error distribution of the profile and its influencing factors are studied
too.

Key words: helical surface, NC machining, tool path, numerical simulation, the minimal directed distance

CLC Number: