期刊
出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.precisioneng.2016.09.020
关键词
Ball screw; Drive; Servo system; Position deviation; Torque fluctuation
This paper addresses a design method of ball screws for high-precision feed drives of machine tools. The torque fluctuation of a ball screw influences position deviation, which deteriorates the contorting accuracy. The torque fluctuation comes from the load change of the contacting balls between the nut and the screw shaft during ball circulation. In order to decrease the load change, a ball screw that employs smaller balls was designed and evaluated in the measurement tests. The experimental results showed that the designed ball screw could decrease both the torque fluctuation and position deviation. (C) 2016 Elsevier Inc. All rights reserved.
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