A Study on Reverse Design of Cam Mechanism using NURBS

NURBS를 이용한 캠 기구의 역설계에 관한 연구

  • 김상진 (창원대 대학원 기계설계공학과) ;
  • 신중호 (창원대 기계설계공학과) ;
  • 김대원 (남도대 기계자동차과) ;
  • 윤호업 (창원대 대학원 기계설계공학과)
  • Published : 2002.10.01

Abstract

This paper presents the reverse design of a cam mechanism using NURBS(Nonuniform Rational B-spline curve). Cam is very difficult to make the accurate shape on the design and the manufacture. Because the cam shape is commonly made in order to move in special functions. The reverse design can be used to check accuracy between the designed data and the manufactured data of the cam shape and also reproduce the cam without the design data. The reverse design procedures consist of motion analysis and curve fitting. The motion analysis is used the central difference method and the relative velocity method to find the displacement and velocity. The curve fitting is used NURBS to develope the whole curve. The central difference method is derived in the 3 dimensional space.

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