Grooved cam with a translating follower having an added ternary-roller intermediate link
Journal
Proceedings of the ASME Design Engineering Technical Conference
Journal Volume
8B-2021
Date Issued
2021
Author(s)
Abstract
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. ? 2021 American Society of Mechanical Engineers (ASME). All rights reserved.
Subjects
Cam profile
Contact stress
Force transmission
Instant centre
Triple rollers
Cams
Mechanisms
Transmissions
Analytical approach
Cam mechanism
Contact Stress
Instant center
Intermediate links
Multiple contacts
Roller follower
Triple roller
Rollers (machine components)
Type
conference paper