Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (5): 116-121.doi: 10.3969/j.issn.1000-565X.2010.05.023

• Mechanical Engineering • Previous Articles     Next Articles

Model Reconstruction and CAM Process of Molar Crown

Lei Xiao-bao  Liao Wen-he  Zhang Lin  Dai Ning  Yang Feng   

  1. College of Mechanica1 and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,Jiangsu,China
  • Received:2009-06-01 Revised:2009-08-06 Online:2010-05-25 Published:2010-05-25
  • Contact: 雷小宝（1979-），男，博士生，主要从事先进制造技术及装备研究． E-mail:lei8080@126．com
  • About author:雷小宝（1979-），男，博士生，主要从事先进制造技术及装备研究．
  • Supported by:

    江苏省自然科学基金资助项目（BK2008576）; 江苏省科技攻关项目（BE2005014）

PDF

878

Abstract:

Molar crown used in dental restoration is unique in design and processing due to its complex profile structure.In this paper,by using the reverse reconstruction technology,the point cloud data of molar crown are obtained,which are used to reconstruct and re-design part models.Then,by analyzing the processing technology through theoretical analysis,simulation and experiment,reasonable milling parameters are selected to eliminate the effects of tool and workpiece deformation on the milling quality and to reduce the machining error due to the chatter of part and tool.Finally,in view of the characteristics of molar crown,a suitable NC tool path is generated,and a molar crown meeting the design requirements is machined.The proposed method gives a reference to the machining of parts with complex structure.

Key words: reverse reconstruction, molar crown, machining error, chatter, tool path