Abstract: An abrading system is presented. The system includes a first vibratory structure comprising a first plurality of protrusions. The system also includes a second vibratory structure comprising a second plurality of protrusions. The system also includes an abrasive article contacting the first film. The system also includes a stroke plate coupled to the second film. When the stroke plate is activated, the first and second plurality of protrusions are configured to interlock and slip with respect to each other in a first direction.

Abstract: A pad for supporting an abrasive disc by being fixed with the abrasive disc to a shaft of a grinder, the pad including a supporting surface opposing the abrasive disc. In a radial direction, an outer edge of the supporting surface is located inward of an outer edge of the abrasive disc. The supporting surface includes a taper portion inclined away from the abrasive disc as it approaches the outer edge of the supporting surface. The abrasive disc is not fixed to the taper portion.

Abstract: A grinding disc includes an inner layer (20) which is made of grindable material (containing abrasive particles) and an outer layer (20) which covers at least a portion of the surface of the inner layer (50) and which is made of non-grindable material (i.e. not-containing abrasive grain).

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.

Abstract: A pad for supporting an abrasive disc by being fixed with the abrasive disc to a shaft of a grinder, the pad including a supporting surface opposing the abrasive disc. In a radial direction, an outer edge of the supporting surface is located inward of an outer edge of the abrasive disc. The supporting surface includes a taper portion inclined away from the abrasive disc as it approaches the outer edge of the supporting surface. The abrasive disc is not fixed to the taper portion.