Anticollision float polishing method based on air floating
                                                               YUAN Zhimin, JI Shiming, ZHANG Li, SHAN Xiaohang
(Key Laboratory of Special Purpose Equipment and Advanced Processing Technology,Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: Aiming at the low quality of the target surface made by the unstable polishing process with current float polishing device, the hydrodynamic suspension polishing method, acoustic suspension polishing, abrasive jet polishing, etc. of the machining mechanism of ultrasmooth surface technology were analyzed, an anticollision float polishing method was proposed according to the air floating theory. The model to predict the radial bearing capacity of the anticollision device was developed based on aerostatic lubrication principles. By improving the radial bearing capacity and stiffness, and reducing the air leakage, such that the radial bearing capacity could be used to overcome the eccentric force, and then the anticollision device turned back automatically. In order to analyze the distribution of the pressure along the axial direction of the anticollision device, the flow model of the anticollision device was developed with Fluent software. The results indicate that the anticollision float polishing method can improve the polishing quality, the deviation between the simulation and theoretical calculation is within 6%, and the eccentricity between the anticollision device and the base plate is less than 0.2. The anticollision device has good effect.

Key words: float polishing; anticollision; air floating; Fluent