Abrasive belt abrasion prediction method in grinding process of complex curved surface workpiece

Abstract

The invention relates to an abrasive belt abrasion prediction method in the grinding process of a complex curved surface workpiece, and belongs to the technical field of precision machining. The method comprises the following steps: determining the change rule of the abrasive belt abrasion coefficient along with the factors such as grinding parameters and grinding duration through a calibration experiment; by establishing an elastic grinding contact model, acquiring the shape and pressure intensity distribution of a contact area in the process that an abrasive belt wheel grinds the complex curved surface workpiece; and constructing a contact area sweeping body according to the change of the contact area along with time under a local coordinate system, and providing the prediction method for the non-uniform change of the abrasive belt abrasion coefficient based on the contact area sweeping body. The problem that in a traditional method, uneven abrasion of an abrasive belt can not be indicated is solved, the change prediction for the abrasion coefficient distribution in the grinding process of the abrasive belt with the complex curved surface can be realized, and the method has the advantages of being high in calculation efficiency, good in prediction precision and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of precision machining and relates to a method for predicting abrasive belt wear during complex curved surface grinding. Background technique [0002] During the abrasive belt grinding process, the abrasive grains of the abrasive belt gradually wear out as the grinding time increases. Belt wear has a significant impact on material removal efficiency and workpiece surface quality. When the wear of the abrasive belt reaches a certain level, the material removal efficiency drops rapidly, resulting in the inability to effectively remove the allowance, and because the friction coefficient increases, the grinding resistance increases, and a large amount of grinding heat will be generated, which will cause burns on the workpiece surface. Therefore, it is of great significance to predict the wear change of the abrasive belt before the actual grinding process to improve the geometric accuracy and surface quality of ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the abrasive belt wear problem in the complex curved surface grinding process, the present invention proposes a method for predicting the non-uniform wear of the abrasive belt

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