Comment on Xu, Nannan, et al. “Modeling analysis and experimental study for the friction of a ball screw.” Mechanism & Machine Theory 87 (2015):57–69

Based on the theory of thermal transmission, this article provides a new method to acquire the friction coefficient in ball screw mechanism. While the screw is in thermal equilibrium, the heat absorption is equal to the heat dissipation. The heat absorption is able to be achieved by calculating the heat energy due to the friction at the contact area and the heat dissipation can be calculated by the law of thermodynamics. When the temperature rise is determined, the heat dissipation can be obtained and the friction coefficient in ball screw mechanism can be calculated further. In order to confirm the validity of this method, a measuring system is constructed to obtain the temperature rise of ball screws. The experimental results show that the temperature rise has the same tendency with the theoretical values depending on this model. Therefore, it can be exploited to predict the temperature rise of ball screws in the rated life cycle when the ball screw is under the condition of thermal equilibrium. Furthermore, this model can be used to evaluate the mechanical efficiency, which is an important parameter for the performance of the ball screw.

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The influence analysis of geometry errors on the contact characteristics of ball screw mechanism

2010 International Conference on Mechanic Automation and Control Engineering ◽

10.1109/mace.2010.5536171 ◽

2010 ◽

Author(s):

Xu Xiangrong ◽

Li Yanfeng ◽

Song Xianchun ◽

Jiang Hongkui

Keyword(s):

Ball Screw ◽

Influence Analysis ◽

Screw Mechanism

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Presliding friction mode: Modelling and experimental study with a ball-screw-driven set-up

Mathematical and Computer Modelling of Dynamical Systems ◽

10.1080/13873950500067049 ◽

2005 ◽

Vol 11 (4) ◽

pp. 397-410 ◽

Cited By ~ 5

Author(s):

C.L. Chen ◽

K.C. Lin ◽

C. Hsieh

Keyword(s):

Experimental Study ◽

Ball Screw ◽

Friction Mode ◽

Set Up

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Kinematics of the Ball Screw Mechanism

Journal of Mechanical Design ◽

10.1115/1.2919459 ◽

1994 ◽

Vol 116 (3) ◽

pp. 849-855 ◽

Cited By ~ 48

Author(s):

M. C. Lin ◽

B. Ravani ◽

S. A. Velinsky

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Efficiency Analysis ◽

Slip Condition ◽

Ball Screw ◽

Contact Deformation ◽

Contact Patterns ◽

Analysis Design ◽

Screw Mechanism ◽

Wear Evaluation

This paper studies the kinematics of the Ball Screw Mechanism (BSM) with the aim of developing a foundation for understanding the motion of the balls and their contact patterns with the contacting elements. It is shown that there is always slip between the balls and the nut or screw, and therefore, the no-slip condition assumed in the BSM literature is not attainable. The effect of contact deformation on the motion of the balls is also studied and is used to develop the pattern of the constant sliding lines of contact between the ball and the screw or the nut. The results have applications in efficiency analysis, design, wear evaluation and finite element modeling of the BSM.

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