Pad for supporting grinding disk

Abstract

To suppress the increase in the heat generated in the grinding disk during grinding. The pad according to one aspect is a pad supporting a grinding disk by being affixed to a shaft of a grinding machine together with the grinding disk, the pad including a support surface opposing the grinding disk, a back surface opposing the support surface, and a plurality of air passages formed at a predetermined spacing along the circumferential direction of the support surface. At least a portion of each of the air passages penetrates from the support surface to the back surface. Each of the air passages is formed to the peripheral portion of the support surface.

1 . A pad supporting a grinding disk by being affixed to a shaft of a grinding machine together with the grinding disk, comprising:
 a support surface opposing the grinding disk;   a back surface opposing the support surface; and   a plurality of air passages formed at a predetermined spacing along a circumferential direction of the support surface,   at least a portion of each of the air passages penetrating from the support surface to the back surface, and   each of the air passages being formed to a peripheral portion of the support surface.   
     
     
         2 . The pad according to  claim 1 , wherein each of the air passages is formed in a spiral shape. 
     
     
         3 . The pad according to  claim 1 , wherein each of the air passages is formed substantially radial. 
     
     
         4 . The pad according to  claim 1 , wherein each of the air passages is formed in an arc shape that is convex in a rotation direction. 
     
     
         5 . The pad according to  claim 1 , wherein the width of each of the air passages widens from the center portion of the support surface toward the peripheral portion.