Abstract
A detailed study of the concave influence function (IF) of bonnet polishing (BP) has been carried out by using theoretical and experimental method. The material removal model of bonnet polishing is established based on Preston’s law. Finite element analysis (FEA) is used to study the pressure distribution in the contact area. Meanwhile, the difference between Gaussian shape and concave IF is studied. The fixed position and surface polishing experiments have been conducted to verify the material removal capacity of the concave IF. The results show that the shape of the IF is mainly affected by the pressure distribution in contact area, and the IF is changed from Gaussian to concave when the compression is larger than 1 mm. The material removal rate (MRR) of the concave IF is higher than that of the Gaussian IF, as the MRR of the concave IF could reach 6.84 mm3/min. The removal capacity of the concave IF is similar to the Gaussian IF, and the effectiveness of the concave IF in high efficiency bonnet polishing is validated.
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