The kinematics of ball-screw mechanisms via the slide–roll ratio
作者： Jianzhong Hu , Min Wang , Tao Zan
DOI: 10.1016/J.MECHMACHTHEORY.2014.04.017
关键词: Screw 、 Mechanism (engineering) 、 Relative motion 、 Mechanics 、 Motion (geometry) 、 Nut 、 Kinematics 、 Rotation 、 Materials science 、 Ball screw 、 Classical mechanics
摘要: Abstract The motion state of balls in the ball screw mechanism is hard to observed or measured because complexity consisting three main components: screw, nut and balls. In this paper, a kinematic model for basic single arc driven by rotation established using homogenous transformation matrix, characteristics slide–roll ratios at contact points raceways are analyzed. There five possible relative states: a) pure rolling rolling–sliding mixed motion, b) c) sliding no d) e) both between tangential direction helix path. A parametric study also carried out evaluate effect velocity on ratio based numerical calculations points.
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