• 제목/요약/키워드: Translating Roller Follower

검색결과 5건 처리시간 0.02초

병진운동용 원형 종동절을 가진 원통캠의 형상설계에 관한 연구 (Study on Shape Design of Cylindrical Cam with A Translating Roller Follower)

  • 윤호업;구병국;신중호
    • 대한기계학회논문집A
    • /
    • 제27권8호
    • /
    • pp.1324-1330
    • /
    • 2003
  • A cylindrical cam with a translating roller follower provides to change the rotational motion of the cam to the translation motion of the follower. It's a very useful mechanism in the automation. But, it's very difficult that the shape is defined accurately. This paper proposes a shape design method of the cylindrical cam with a translation roller follower using the relative velocity method$\^$(9,11-13)/ : The relative velocity method calculates the relative velocity of the follower versus the cam at a center of roller, and then determines a contact point by using the geometric relationships and the kinematical constraints. Finally, we present examples in order to prove the accuracy of the proposed methods.

상대속도를 이용한 병진운동용 롤러 종동절을 가진 원통캠의 형상설계에 관한 연구 (A Study on Shape Deisgn of Cylindrical Cam with Translating Roller Follower Using Relative Velocity)

  • 윤호업;신중호;김종수;김상진
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 1997년도 추계학술대회 논문집
    • /
    • pp.639-642
    • /
    • 1997
  • A cylindrical cam with a translation roller follower provides to transfer the translation motion and it s very useful mechanism in the automation. But. it's very difficult that the shape is defined accurately. This paper, proposes a new shape design method of the cylindrical cam with translation roller follower using the relative velocity method[l]. The relativc velocity method lculates the relative velocity of the follower versus the cam at a center of roller, and then determines a contact point by using the geometric relationships and the kinematical constraints. Finally, we present an example in order to prove the accuracy of the proposed methods.

  • PDF

병진운동용 원통캠기구의 운동해석을 위한 수치해석법 연구 (A Study on Numerical Method for Motion Analysis of Cylindrical Cam with Translate Follower)

  • 김상진;신중호;김대원;박세환
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 2002년도 춘계학술대회 논문집
    • /
    • pp.719-722
    • /
    • 2002
  • Cylindrical cam mechanisms are used commonly in many automatic machinery. But the cylindrical cam is very difficult to design and manufacture the shape. The motion analysis of the cylindrical cam can check the accuracy between designed data and manufactured data of the cam shape and can reproduce without the cam design data. The motion analysis of the cylindrical cam consists of displacement analysis, velocity analysis and acceleration analysis. This paper performs the motion analysis of a cylindrical cam with translating follower by using a relative velocity method and a central difference method. The displacement is calculated by using the central difference method and the velocity is calculated by the relative velocity method. The relative velocity method is defined by the relative motion between follower and cam at a center of a follower roller. The central difference method is derived in the 3 dimensional space.

  • PDF

종동절의 상대가속도를 이용한 원반 캠의 곡률반경 결정법에 관한 연구 (A Study on Curvature Determination Approach of Disk Cams Using relative Accelerations of Followers)

  • 신중호;강동우;김종수;김대원
    • 한국정밀공학회지
    • /
    • 제17권8호
    • /
    • pp.113-119
    • /
    • 2000
  • There are two major factors which affect the cam design : the pressure angle and the radius of curvature, Cam shape will have an instantaneous radius of curvature at every point. Even though the design constraint of the pressure angle has been satisfied the follower may still not complete the desired contact motion. If the radius of the follower roller is larger than the concave(negative) radius on the cam it occurs the gap between the cam and the follower roller at the contact point. And also if the curvature of the pitch curve of the cam is too sharp the cam profile may be undercut. This paper proposes a new approach which uses the relative velocity of the follower roller parallel to the tangent line at the contact point on the cam surface for determining the pressure angle and the relative acceeration for determining the radius of curvature.

  • PDF