Patent ID: 8834236
Filing Date: 2014-09-16
Classification: B24B

Abstract:
1. A grinding wheel for treatment of a cutting edge, such as a knife's edge, the grinding wheel arranged mountable on a rotatable shaft to be brought in rotation by a driven rotation of the shaft, and comprising two grinding discs ( 1 , 2 ) opposing each other and arranged movable relative to each other in the shaft's longitudinal direction and pre-tensioned away from one another, each of the grinding discs having a hub section ( 8 ) with fingers ( 9 ) protruding freely from the hub section at a radial and an axial component of direction, wherein the fingers are arranged at intervals dimensioned for passage of the corresponding fingers of the opposite grinding disc such that the finger's axial components of direction together form an outwardly open, in an axial cross-sectional plane generally V-shaped notch (V) defined by the intersecting rotational planes of the crosswise running fingers, and in which the fingers has an area ( 11 ) for treatment of the knife's edge, characterized in that the grinding disc's fingers, as well as the intervals between the fingers, from the hub section towards the periphery of the grinding disc, has increasing width between a leading edge ( 10 a ) and a trailing edge ( 10 b ) of the finger as viewed in the direction of rotation, and in that the V-shaped notch in the axial cross section comprises an insertion region (I) in which the notch width (B 1 ) is wider at the finger's leading edge than the corresponding width (B 2 ) at the trailing edge of the finger, when measured at equal radial distances from the grinding wheel centre (C), whereas the width of the notch radially inside said insertion region is the same at the leading and trailing edges of the finger.