Method of making cutting tool edges, a device for realizing same, and a striker used in the said device

摘要

The method of the invention includes forming a plate and deforming, by ultrasonic forging, a plate side located between the conical surfaces (34, 35) of strikers (2, 3) for the purpose of forming a wedge-shaped edge on the plate (1). The strikers are rotated around their longitudinal axes (L1, L2). The device of the invention is provided with a drive for rotating the strikers (2, 3). On the working surface of the striker (2, 3) a recess is made, the generatrix of which corresponds to the form of the wedge-shaped edge surface. The invention enables to shorten the time of treatment and improve the quality of the cutting edge surface.

主权项

1. A method of making a cutting edge of a cutting device, said cutting device comprising a plate with a plate region adjacent to an edge,
wherein at least a portion of the plate region and the edge are positioned between two strikers of an ultrasonic forging device, wherein the cutting edge is formed from the plate region and the edge by simultaneously moving the plate in a direction parallel to the edge and essentially orthogonal to the longitudinal axes (L1, L2) of the strikers during operation of the strikers, and wherein the strikers are rotated around their longitudinal axes (L1, L2) during operation, and wherein when deforming the edge by ultrasonic forging the edge is deepened toward the working surfaces to a distance l, which is selected in the interval 1.1t/(4tg α)>l≧t/(4tg a), where t is the plate thickness, and α is the angle between the generatrix of the cone-shaped working surface and the center plane (Z) of the plate.