Presented in this paper is an asymmetric acceleration-derived cam motion program suitable for single-dwell cam-follower systems with clearance between the cam and follower during dwell. Asymmetric rise and fall is included as this is desirable in certain manufacturing operations and machines that require a quick rise or fall. The motion program for the cam-follower actuation is derived from the follower acceleration so that designers can control the ratio of the magnitudes of positive and negative accelerations. This provides cam designers more control over the cam-follower interface force and therefore more control over factors such as cam wear and the potentially destructive phenomenon known as “follower jump.” The motion program used to close and open the clearance gap is derived from a velocity function, allowing more control of follower inertia during the important clearance closing event. The motion program is presented in closed-form, suitable for implementation in standard engineering equation-solving software.
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August 2012
Technical Briefs
A Versatile Acceleration-Based Cam Profile for Single-Dwell Applications Requiring Cam-Follower Clearance During Dwell
Forrest W. Flocker
Forrest W. Flocker
Department of Engineering and Technology,
e-mail: flocker_f@utpb.edu
University of Texas of the Permian Basin
, 4901 East University, Odessa, TX 79762
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Forrest W. Flocker
Department of Engineering and Technology,
University of Texas of the Permian Basin
, 4901 East University, Odessa, TX 79762e-mail: flocker_f@utpb.edu
J. Mech. Des. Aug 2012, 134(8): 084505 (7 pages)
Published Online: July 23, 2012
Article history
Received:
March 6, 2012
Revised:
May 23, 2012
Online:
July 23, 2012
Published:
July 23, 2012
Citation
Flocker, F. W. (July 23, 2012). "A Versatile Acceleration-Based Cam Profile for Single-Dwell Applications Requiring Cam-Follower Clearance During Dwell." ASME. J. Mech. Des. August 2012; 134(8): 084505. https://doi.org/10.1115/1.4007002
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