In order to obtain a good grinding surface, it is sometimes necessary to groove the surface of the grinding disc. quick change disc，The shapes of the grooves include radial, grid, concentric and helical. The shape, width, depth and spacing of the grooves should be selected according to the quality and shape of the workpiece material and the machining accuracy of the ground surface. The grooves on the surface of the abrasive tool have the following functions:

(1) Excess abrasive particles can be stored in the grooves to prevent the accumulation of abrasives and damage the surface of the workpiece.

(2) As a channel for supplying abrasive grains to the workpiece during processing.

(3) As a channel for timely chip removal, it can prevent the grinding surface from being scratched.

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