Journal of Zhejiang University SCIENCE A
ISSN 1673-565X(Print), 1862-1775(Online), Monthly

2008   Vol. 9   No. 9   p. 1258~1263

Research in non-equalization machining method for spatial cam

Jun-hua CHEN¹, Yi-jie WU^‡2

(¹Institute of Mechanical and Electrical Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315010, China)
(²Institute of Modern Manufacture Engineering, Zhejiang University, Hangzhou 310027, China)
^‡ Corresponding Author
E-mail: cjh@nit.zju.edu.cn; wyj1116@zju.edu.cn
Received Dec. 3, 2007; revision accepted Mar. 24, 2008

Abstract: Many kinds of devices with cam have been widely used in various mechanical equipments. However, non-equalization machining for spatial cam trough remains to be a difficult problem. This paper focuses on the analysis of running conditions and machining processes of spatial cam with oscillating follower. We point out the common errors in the biased distance cutting. By analyzing the motion of oscillating follower of spatial cam, we present a new 3D curve expansion model of spatial cam trough-outline. Based on this model, we have proposed a machining method for trochoidal milling with non-equalization diameter cutter. This new method has led to a creative and effective way for non-equalization diameter machining for spatial cam with oscillating follower.

Key words: Oscillating follower, Spatial cam, 3D curve expansion, Trochoidal milling, Non-equalization diameter
doi:10.1631/jzus.A0720097             CLC number: TH122; TG711

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