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Research Papers

A Computational Approach for Cam Size Optimization of Disc Cam-Follower Mechanisms With Translating Roller Followers

[+] Author and Article Information
Paulo Flores

Departamento de Engenharia Mecânica,
Universidade do Minho,
Campus de Azurém,
Guimarães 4800-058, Portugal
e-mail: pflores@dem.uminho.pt

Contributed by the Mechanisms and Robotics Committee of ASME for publication in the JOURNAL OF MECHANISMS AND ROBOTICS. Manuscript received February 1, 2013; final manuscript received July 5, 2013; published online September 11, 2013. Assoc. Editor: David Dooner.

J. Mechanisms Robotics 5(4), 041010 (Sep 11, 2013) (6 pages) Paper No: JMR-13-1031; doi: 10.1115/1.4025026 History: Received February 01, 2013; Revised July 05, 2013

The main objective of this work is to present a computational approach for design optimization of disc cam mechanisms with eccentric translating roller followers. For this purpose, the objective function defined here takes into account the three major parameters that influence the final cam size, namely, the base circle radius of the cam, the radius of the roller and the offset of the follower. Furthermore, geometric constraints related to the maximum pressure angle and minimum radius of curvature are included to ensure good working conditions of the system. Finally, an application example is presented and used to discuss the main assumptions and procedure adopted throughout this work.

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References

Figures

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Fig. 1

Schematic representation of a generic disc cam mechanism with offset translating roller follower

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Fig. 2

Theory of envelopes to generate cam profile

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Fig. 3

Displacement diagram of the follower motion – RDR

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Fig. 4

Pressure angle for a complete cam rotation

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Fig. 5

Standard cam profile and optimized cam profile obtained with the numerical optimization approach

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