Research on the Impact between Balls and Re-Circulating Mechanism of Ball Screws

Zuo Ying Zhang; Wan Li Zhang; Chi Xu

doi:10.4028/www.scientific.net/AMM.551.370

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 551Research on the Impact between Balls and...

Research on the Impact between Balls and Re-Circulating Mechanism of Ball Screws

Abstract:

A Mechanical model of impact and contact between the ball and re-circulating mechanism in ball screw was brought forward according to the Hertz contact model and classical impact theory, along with the joint relationship of re-circulating mechanism and nut taken into account. Then the formula of the impact force and contact time was induced, which the elastic coefficient of restitution was considering in contact time calculation. Moreover, a special test unit was designed for contact time measurement and the contact time was measured. The result indicates that the new model proposed in this paper is closer to the practical situation than the old model proposed in literature. Based on works mentioned above, the influence of impact angle, parameters of structure and material on impact force was analyzed by numerical simulation.

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Periodical:

Applied Mechanics and Materials (Volume 551)

Pages:

370-377

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.551.370

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Online since:

May 2014

Authors:

Zuo Ying Zhang*, Wan Li Zhang, Chi Xu

Keywords:

Ball Screws, Contact Time, Hertz Model, Impact Force, Non-Perfect Elastic Collision

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* - Corresponding Author

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