Minimizing and Restricting Vibrations in High-Speed Cam-Follower Systems Over a Range of Speeds

[+] Author and Article Information
J. K. Jiang, Y. R. Iwai

Department of Mechanical Engineering, Fukui University, Fukui 910-8507, Japan

H. Su

Department of Mechanical Engineering, Xi’an Polytechnic University, P.R.C.

J. Appl. Mech 74(6), 1157-1164 (Feb 04, 2007) (8 pages) doi:10.1115/1.2723812 History: Received March 22, 2005; Revised February 04, 2007

Over a range of cam speeds, the problems of minimizing and restricting vibrations in high-speed cam-follower systems over a range of speeds are formulated as constrained optimization problems. A universal Hermite cam displacement is suggested. The combination of these methods can form a general design environment. In this environment, the designer can arbitrarily select one to formulate as the objective function from quantifiable cam properties such as the residual vibration, primary vibration, pressure angle, radius of curvature, and contact stress, while the rest of quantifiable cam properties can be formulated as the design constraints.

Copyright © 2007 by American Society of Mechanical Engineers
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Figure 1

Approximate substitution of motion curves with step curves (a) acceleration curve (b) velocity curve

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Figure 2

Comparison of residual vibration characteristics (a)λ=1–2; (b)λ=1.0499–1.9436; and (c)λ=1–10

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Figure 3

Follower displacement curve

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Figure 4

Follower velocity curve

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Figure 5

Follower acceleration curve

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Figure 6

Primary vibration characteristics

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Figure 7

Residual vibration characteristics

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Figure 8

Pressure angle of cam profile

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Figure 9

Radius of curvature of cam profile

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Figure 10

Cam-follower contact force

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Figure 11

Cam-follower contact stress



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