Patent ID: 8764519
Filing Date: 2014-07-01
Classification: B24D

Abstract:
1. A grinding wheel comprising: a disc member; and an annular grindstone member fitted on an outer peripheral surface of the disc member, wherein the disc member has a first fluid-supply hole and a second fluid-supply hole which are formed through the disc member from a first side surface to a second side surface of the disc member and which are formed alternately in a peripheral direction of the disc member, wherein the first fluid-supply hole has an outlet opening through an outer peripheral portion of the first side surface, and an inlet opening which is open through the second side surface and is disposed at an inner position of the outlet opening in a radial direction of the disc member, wherein the second fluid-supply hole has an outlet opening through an outer peripheral portion of the second side surface, and an inlet opening which is open through the first side surface and is disposed at an inner position of the outlet opening of the second fluid-supply hole in a radial direction of the disc member, wherein the first side surface and the second side surface of the disc member are formed with outer peripheral walls, respectively which are disposed at outer positions of inlet openings in a radial direction of the disc member and which project along an outer peripheral portion of the disc member, and wherein outlet openings are open through the outer peripheral walls, respectively.