In this paper, a new method to design cam mechanisms with translating roller follower using Matlab and Inventor software is presented. The minimization of the cam size and the contact stress can be determined by controlling design parameters, such as the cam base circle radius, the follower face width and the follower offset. During the design procedure, a number of constraints regarding the pressure angle and the contact stress are taken into account. The finite element aproach is used to perform the analysis. A specific design case has been done to prove the practical applicability of this new approach. | Trần Minh Quang và Đtg Tạp chí KHOA HỌC & CÔNG NGHỆ 139(09): 125 - 130 COMPUTER AIDED CAM DESIGN OF ROLLER-FOLLOWER CAM MECHANISM CONSIDERING KINEMATIC AND DYNAMIC REQUIREMENTS Tran Minh Quang*, Nguyen Quang Hung College of Technology - TNU SUMMARY In this paper, a new method to design cam mechanisms with translating roller follower using Matlab and Inventor software is presented. The minimization of the cam size and the contact stress can be determined by controlling design parameters, such as the cam base circle radius, the follower face width and the follower offset. During the design procedure, a number of constraints regarding the pressure angle and the contact stress are taken into account. The finite element aproach is used to perform the analysis. A specific design case has been done to prove the practical applicability of this new approach. Keywords: Cam profile, Cam design, Synthesis, Cam follower-mechanism, FEA INTRODUCTION* A cam may be defined as a machine element having a curved outline or a curved groove, which, by its oscillation or rotation motion, gives a predetermined specified motion to another element called the follower. Cam mechanism with roller follower is used widely in many classes of machines because due to the cam and follower it is possible to obtain an unlimited variety of motions. However, when a motion of follower is given arbitrarily, designers are sometime very difficult to build the cam profile to satisfy kinematic and dynamic characteristics, such as displacement, velocity, acceleration of follower, pressure angle, and even contact stress. There are a number of documents presenting about how to construct these profiles by using normal functions, such as Cycloid function, Sin function etc[]. There are many new approaches executed to improve smooth of the cam profile, but these methods are still limited to kinematic requirements [3]. The paper presents a new method to design cam mechanisms with translating roller follower .
