Abstract: The precision maintenance contrast test on the 45 type rolling linear guide in China and abroad was carried out, and the precision maintenance of rolling linear guide was detected. The contact mechanics between the ball and raceway and the deformation of the ball based on the Hertz contact theory and rigid body dynamics were analyzed, and the maximum contact stress of the ball was obtained. Then the Workbench was adopted for simulation verification, which provides a theoretical reference for abrasive wear mechanism and adhesion wear mechanism study. According to the movement condition and the structure design of rolling linear guide, field emission scanning electron microscope and white light interferometer were used to observe the microscopic appearance of raceway and the ball of rolling linear guide after the test, exploring the wear characteristics and wear mechanism of rolling linear guide. Comparing the wear degree of raceway and the ball of rolling linear guide made in China and abroad, it is concluded that wear is the primary cause affecting precision maintenance.
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2018, Vol. 32 
