Patent ID: 7673376
Filing Date: 2010-03-09
Classification: B21K,Y10T

Abstract:
1. A device for the fabrication of a toothing at a three-dimensional pot-shaped body produced by forming and fine blanking, comprising: a tool for forming teeth into a substantially evenly curved edge of a pot-shaped body having inner forms in a base thereof, the teeth of the toothing radially extending inward with respect to the pot-shaped body, the three-dimensional body being fixed between a base plate and a pressure pad, the tool including a fabrication die for fine blanking or shaving in which is provided a hollow space; and a sliding pilot die being placed within said hollow space, movable in a working direction of the tool and engageable with the base of the pot-shaped body, said pilot die being biased by a spring and coupled to said fabrication die such that the pilot die, during a descending movement thereof, advances ahead of the fabrication die and a groove is created between the cut or shaved surface of the inner toothing and the pilot die for leading the fine blanking burr or shaving chips into a recess of the body, wherein the fabrication die, when reaching a lowest position thereof, fixes and presses the burr or the chips into the recess.