Abstract
In order to study the positioning device structure based on mechanical design technology, PLC technology and sensor technology, the structure of the positioning device is analyzed mainly from the structure design. Firstly, the overall scheme of the positioning system is designed, and then the theoretical analysis and modeling of the ball screw pair are carried out. The results show that the contact stress between ball and screw raceway is larger than the contact stress between ball and nut, and the contact factor should be considered in the design of lead screw pair. The contact force between ball and nut, ball and screw is most obviously affected by speed. DN value and contact angle affect contact velocity indirectly. Finally, according to the simulation results and the theoretical calculation, the mechanical structure design of the mechatronics precise positioning device is determined.
