Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on Design of Barrel Cam Using Relative Velocity

상대속도를 이용한 바렐 캠의 설계에 관한 연구

  • 신중호 (창원대학교 기계설계공학과) ;
  • 김성원 ((주)삼주기계 기술연구소) ;
  • 강동우 (두산중공업(주) 환경기술연구팀) ;
  • 윤호업 (창원대학교 대학원 기계설계공학과)
  • Published : 2002.08.01
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Abstract

A barrel cam is used as a very important part of an index drive unit. The index drive unit must have an intermittent-rotational motion. The barrel typed cam and roller gear mechanism has the advantages of high reliability to perform a prescribed motion of a follower. This paper proposes a new method for the shape design of the barrel cam and also a CAD program is developed by using the proposed method. As defined in this paper, the relative velocity method for the shape design calculates the relative velocity of the follower versus cam at a center of roller, and then determines a contact point by using the geometric relationships and the kinematic constraints, where the direction of the relative velocity must be parallel to a common tangential line at the contact point of two independent bodies, i.e. the cam and the follower Then, the shape of the cam is defined by the coordinate transformation of the trace of the contact points. This paper presents two examples for the shape design of the barrel cam in order to prove the accuracy of the proposed methods.

Keywords

References

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