Grinder and grinding machine

摘要

A grinder includes a rotatable disk to be pressed to a workpiece; a plurality of grinding bodies provided on one principal surface of the disk so as to cross a circumferential direction of the disk, each having a grinding stone chip on a side contacting the workpiece; and support devices, each supporting each of the grinding bodies so that the grinding stone chip swings with respect to the principal surface. Each support device supports each grinding body at a position at which an abrasion amount of the grinding stone chip is made uniform when the disk is rotated while being pressed to the workpiece so that a pressure to be applied to the grinding stone chip on an outer peripheral side of the disk becomes smaller than a pressure to be applied to the grinding stone chip on an inner peripheral side of the disk.

主权项

1. A grinder comprising:
a substantially discoid disk that is rotatable around a rotation axis of the disk and is adapted to be pressed to a workpiece; a plurality of grinding bodies provided on one principal surface of the disk so that the plurality of grinding bodies extends radially outwardly from the rotation axis of the disk, each of the plurality of grinding bodies having a grinding stone chip on a side contacting the workpiece; and support devices attached to the disk, each supporting device supporting the each of the plurality of grinding bodies so that the grinding stone chip swings with respect to the principal surface, wherein each of the support devices has a supporting point supporting the each of the plurality of grinding bodies so that an abrasion amount of the grinding stone chip is made uniform when the disk is rotated while being pressed to the workpiece, the supporting point being deviated to an inner peripheral side from a center in a longitudinal direction of each the plurality of grinding bodies so that a pressure to be applied to the grinding stone chip on an outer peripheral side of the disk becomes smaller than a pressure to be applied to the grinding stone chip on an inner peripheral side of the disk.