Research on Reverse Design of the Cam Mechanism

Abstract:

In view of the reverse design of planar cam mechanism, the measurements of cam contour are smoothed by the discrete energy law in order to ensure the dynamic performance. The cam profile is fitted by three non-uniforms B-spline according to the features that cam contour is a closed curve and its measurements are distributed non-uniformly. Based on the above, the expressions of displacement, speed, and acceleration of the follower in form of polar radius of profile and its first and second derivative are derived. Finally, a reverse design example is given, the effectiveness of the method is verified.

• Periodical: Applied Mechanics and Materials (Volume 43)
• Pages: 551-554
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.43.551
• Online since: December 2010
• Authors: Min Fei Liu, Zhi Liang Qian
• Keywords: B-Spline, Cam Mechanism, Discrete Energy Law, Reverse Design

References

[1] Zhu Xinxiong. Formative technique of free curves and surfaces[M]. Beijing: Science Press, (2000).

[2] Shi Fazhong. Computer aided geometric design and the non-uniform rational B-spline[M]. Beijing: Higher Education Press, (2001).

[3] Qian Zhiliang: Mechanical Design, 2003 20 (4), pp.23-24.

[4] Guan Farong. Cam and cam mechanism[M]. Beijing: National Defence Industry Press, (1993).

[5] Shi Yong. Caculation the motion law of driven parts from cam outline, 1996 11 (4), pp.49-53.

[6] Liu Huaxiang, Shi Derang. Pocket mechanical formula Manual[M]. Chongqing: Chongqing Press, (1985).