Patent ID: 9073166
Filing Date: 2015-07-07
Classification: B24B

Abstract:
1. An electric cutting-tool grinder comprising a rotary grinding member including a grindstone, wherein the rotary grinding member is secured to a rotary shaft rotated by a rotation drive unit to rotate integrally with the rotary shaft, the grindstone includes a grinding surface formed by a conic surface which defines a generating line of the grinding surface that extends in a direction relative to the conic surface, rotary grinding member is rotated in a plane perpendicular to the rotary shaft, the rotation drive unit is mounted in a housing, a blade of a cutting-tool is ground with a longitudinal direction of the cutting-tool aligned with the direction of the generating line of the grinding surface, and the electric cutting-tool grinder includes means for permitting the cutting-tool to be aligned with the direction of the generating line of the grinding surface and permitting the blade to abut against the grinding surface without a handle of the cutting-tool and a hand that holds the cutting-tool being interfered by the grinder in the case in which the blade is ground with a tip of the blade of the cutting-tool facing the extending direction of either end of the generating line of the grinding surface, wherein the housing is formed to incline with respect to a vertical line at a predetermined angle, the predetermined angle equals an inclination angle of the conic surface which forms the grinding surface of the grindstone, with respect to the rotary shaft, and the rotary shaft extends diagonally at an angle equal to the predetermined angle of incline of the housing.