Method for producing an externally toothed cup-shaped sheet metal part

摘要

The invention relates to a method for producing an externally toothed pot-shaped sheet metal part with parallel to the pot central axis teeth, in which pushed an untoothed cup-shaped sheet metal part on a mandrel and then the cup-shaped sheet metal part together with the mandrel by a parallel to the central axis on the sheet metal part under the exertion of a radial pressure rolling pressure roller assembly is pressed, wherein the outer profile is rolled onto the cup-shaped sheet metal part and the material is pressed into the tooth grooves of the receiving mandrel. In order to provide a method of the type mentioned in the preamble, with which the pitch error can be minimized, it is proposed in the invention that in a first step at least in partial areas of the pot-shaped sheet metal part parallel to the pot center axis guides for the rollers of the pressure roller assembly are introduced. Before the introduction of the teeth in the cup-shaped sheet metal part, this is initially provided with guides for the rollers of the pressure roller assembly. These guides prevent the breaking of the rollers of the pressure roller assembly when applying the pressure roller assembly on the cup-shaped sheet metal part, which leads to the reduction of the pitch error. Instead of conventional as the leadership of the pressure roller assembly by changing the same, so the tool side, to improve, the problem of the pitch error is addressed workpiece side according to the invention.