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Calculation of kinetic locus of upper tool in cold orbital forging machine with two eccentricity rings

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Abstract

In cold orbital forging machine with two eccentricity rings, the kinetic locus of the upper tool includes two types. The first one is the kinetic locus of one point in the axis of the upper tool, which is produced by the motion of the two eccentricity rings. The second one is the kinetic locus of one point in the working surface of the upper tool, which is produced by the first type of kinetic locus. Both types of kinetic locus of the upper tool is critical to cold orbital forging. The first one has great influences on the deformation of cold orbital forged components and the second one can be used to make the intervention examination between the upper tool and components. So this paper aims at obtaining the kinetic locus of the upper tool in cold orbital forging machine with two eccentricity rings so as to better design and check the cold orbital forging tools. Firstly, a model of analyzing the kinetic locus of the upper tool is developed. Then, the general equations of the kinetic locus of the upper tool, which can describe the kinetic locus of the arbitrary point in the upper tool under all kinds of geometric and kinematic relations between the two eccentricity rings in cold orbital forging machine, are achieved. Finally, the characteristics and applications of the kinetic locus of the upper tool are discussed based on these equations. This study has great significances for adjusting the two eccentricity rings of the machine to control the motion of the upper tool and designing and checking the cold orbital forging tools.

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Authors and Affiliations

  1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, China

    Xinghui Han, Xinchang Zhang & Lin Hua

  2. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, 430070, China

    Xinghui Han, Xinchang Zhang & Lin Hua

Authors
  1. Xinghui Han
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  2. Xinchang Zhang
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  3. Lin Hua
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Correspondence to Xinghui Han.

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Recommended by Associate Editor Dae-Cheol Ko

Xinghui Han received his Ph.D. degree in Materials Processing Engineering from Wuhan University of Technology, China, in 2010. He is currently an associate professor at Hubei Key Laboratory of Advanced Technology for Automotive Components at Wuhan University of Technology in Wuhan, China. Dr. Han’s research interests include advanced forming and equipment technology.

Xinchang Zhang received his B.S. degree in Mechanical Engineering and Automation from Qingdao University, China, in 2013. He is currently a master at Hubei Key Laboratory of Advanced Technology for Automotive Components at Wuhan University of Technology in Wuhan, China. His research interests include advanced forming and equipment technology.

Lin Hua received his Ph.D. degree in Mechanical Engineering from Xi’an Jiaotong University, China, in 2000. Dr. Hua is currently a professor at Hubei Key Laboratory of Advanced Technology for Automotive Components at Wuhan University of Technology in Wuhan, China. Dr. Hua’s research interests include advanced forming and equipment technology.

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Han, X., Zhang, X. & Hua, L. Calculation of kinetic locus of upper tool in cold orbital forging machine with two eccentricity rings. J Mech Sci Technol 29, 4351–4358 (2015). https://doi.org/10.1007/s12206-015-0933-0

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  • DOI: https://doi.org/10.1007/s12206-015-0933-0

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