Session: MR-02-01 Theoretical & Computational Kinematics

Paper Number: 69734

Start Time: August 18, 10:00 AM

69734 - Grooved Cam With a Translating Follower Having an Added Ternary-Roller Intermediate Link 

The paper presents an analytical approach for designing grooved cam mechanisms with a modified arrangement of the common translating follower. That is, an extraneous intermediate link that has three rollers is added between the cam and the common follower. On the basis of an existing cam mechanism with a common roller follower, an extraneous intermediate link that has three rollers is added between the cam and the common follower. Such a cam mechanism has two set of profile and can creating multiple contact points between the cam and the follower at any instant. The two sets of profiles of such a cam mechanism can serve as the grooved types. Since the follower has three rollers that can simultaneously contact the cam at any instant, it can be positive driven along the guided groove of cam contour. The contact forces and contact stresses of such cam mechanisms are analyzed to illustrate the advantage of spreading force transmission and reducing contact stress of this uncommon follower. The obtained results indicate that the contact stress at the surface of the cam and the follower for such a cam mechanism can be reduced by 34% to 42% in comparison to those of cam mechanism with a common translating roller follower.

Presenting Author: Tung-Hsin Pan National Taiwan University

Authors:

Kuan-Lun Hsu National Taiwan University
Tung-Hsin Pan National Taiwan University
Long-Iong Wu National Tsing Hua University