• Title/Summary/Keyword: 롤러기어캠

Search Result 7, Processing Time 0.026 seconds

A Study on development of design and CNC manufacturing software of roller gear cam (롤로기어캠 설계 및 CNC 가공 Software 개발에 관한 연구)

  • 권병두;이춘만;정원지
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2001.04a
    • /
    • pp.487-491
    • /
    • 2001
  • In this paper, we developed an automated program for the modeling and manufacturing of three-dimensional roller gear cams. A computer program employing the theory of gearing and coordinate transformation is developed for synthesizing and animating cam mechanisms. Then a module for generation NC program for a five-axis CNC machine to manufacture roller gear cam is established.

  • PDF

A Study on Shape Design of Cylindrical Cam with Rotating Roller Follower in Roller-Gear-Cam Mechanism (롤러기어캠 기구를 위한 회전운동형 롤러 종동절을 가진 원통 캠의 형상 설계에 관한 연구)

  • Sin, Jung-Ho;Gang, Dong-U;Yun, Ho-Eop
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.26 no.8
    • /
    • pp.1527-1533
    • /
    • 2002
  • When a mechanism transfers a motion to an intersected shaft, a cylindrical cam mechanism may be the best choice among the mechanisms. The cylindrical cam with a roller follower provides to transfer the motions to the intersect shafts simply without other connecting equipments of the intersect shafts. Typical example may be a roller-gear-cam mechanism. But the shape of the cam must be exactly defined in order to satisfy the conditions for the prescribed motion of the follower. This paper proposes a new method for the shape design of the cylindrical cams and also a CAD program is developed by using the proposed method. 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 kinematic constraints. The constraint used in the relative velocity method is that the relative velocity must be parallel to a common tangent 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. Finally, this paper presents an example in order to prove the accuracy of the proposed methods in this paper and the application of the CAD program"CamDesign".

A Study on the eccentric machining of roller gear cam (롤러기어캠 편심 가공에 관한 연구)

  • 권병두;조승래;이춘만;정원지
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2000.11a
    • /
    • pp.251-254
    • /
    • 2000
  • In this paper, we developed an automated program for the modeling and manufacturing of three-dimensional roller gear cams. A computer program employing the theory of gearing and coordinate transformation is developed for synthesizing and animating cam mechanisms. A method using wire frame modeling and shading by triangular element is presented, and effectively used for modeling of example with reduced computation time. Then a module for generation NC program for a five-axis CMC machine to manufacture roller gear cam is established.

  • PDF

A Study on the modeling and manufacturing of roller gear cam (롤러기어캠 모델링 및 가공에 관한 연구)

  • 조승래
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
    • /
    • 2000.04a
    • /
    • pp.234-239
    • /
    • 2000
  • In this paper, we developed an automated program for the modeling and manufacturing of three-dimensional roller gear cams. A computer program employing the theory of gearing and coordinate transformation is developed for synthesizing and animating cam mechanisms. A method using wire frame modeling and shading by triangular element is presented, and effectively used for modeling of example with reduced computation time. Then a module for generation NC program a five-axis CNC machine to manufacture roller gear cam is established.

  • PDF

A Study on 5-Axis Machining of Roller Gear Cam for Rotary Table (로터리테이블용 롤러기어캠의 5-축 가공에 관한 연구)

  • Cho, Hyun-Deog;Park, Jong-Bae;Shin, Yong-Bum;Lee, Kang-Su
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.16 no.4
    • /
    • pp.127-134
    • /
    • 2017
  • A rotary table is a positioning device used in metalworking for the multiple axes of machine tools, and the utilization trend is increasing with machining efficiency. In the construction of a rotary table, the core technology is a power transfer unit that drives the table, typically a gear type and a roller gear cam type. As the rollers installed on the turret column have rolling movement on the contact surface of the roller gear cam, the roller gear cam type has the advantage of low wear, high load, and fast driving. Therefore, it is currently being replaced by a roller gear cam type. In this study, we researched a 5-axis machining method for the roller gear cam on a rotary table and a new method of applying double roller gear cam curve to reduce the noise and shock between the roller and the cam surface. We implemented the 5-axis machining process in this study using software to generate NC-code and machined the roller gear cams using a Mazak Integrex-200IV. We found that the roller gear cam and turret were able to identify mutual touch status and the noise from the operation of the roller gear cam was substantially reduced.

A Study on the modeling of roller gear cam (롤러기어캠의 모델링에 관한 연구)

  • 조승래;이춘만;정원지
    • Transactions of the Korean Society of Machine Tool Engineers
    • /
    • v.10 no.3
    • /
    • pp.31-37
    • /
    • 2001
  • In this paper, we developed an automated program for the modeling and simulation of three-dimensional roller gear cam mechanisms. The three-dimensional modeling for a roller-gear cam employs coordinate transformations based on the con-tact condition. the wire frame modeling followed by the shading technique using triangular meshing elements incorporat-ed the to reduce the number of data and computational load. Computer simulations for two kinds of products for rollger-gear cam mechansim illustrate the relative motion between the modeled roller-gear cam and a turret and thus show the effectiveness of the proposed modeling.

  • PDF

Study of 4-Axis Machining for Ball Gear Cam (볼기어캠의 4-축 가공에 관한 연구)

  • Cho, Hyun-Deog;Shin, Yong-Bum
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.18 no.9
    • /
    • pp.81-87
    • /
    • 2019
  • The automatic tool changer of a machining center consists of a tool magazine and a cam box, and the core components of the cam box are a roller gear cam and a turret. Recently, the roller gear cam of a cam box has been replaced by a ball gear cam. In this study, the design and machining method of ball gear cam for an automatic tool changer was studied. Additionally, an algorithm for a 4-axis post processing method was established from an instrumental formula by designing a ball gear cam, thus preventing machining at the bottom of ball end mill and enabling the ball on the turret to be driven at the entrance and exit of a curve without collision due to machining errors. In conclusion, machining using only the 4-axis method including the C-axis on a BC -Type 5-axis machine produced the desired ball gear cam.