Patent Number: 6,253,589

Title: Flow-turning device and method for producing internally geared wheels using two sets of internal toothing

Abstract: The invention relates to a flowturning device (1; 101) for producing an internal geared wheel (17) with inner toothing, one set of which is slanted. The workpiece (9) is held by a retaining member (16; 116) during shaping of the first inner toothing. The workpiece (9) is held by the first toothing on the first shaping toot (2; 102) during shaping of the second inner toothing. Once the internal geared wheel (17) has been finished, the rotational coupling between both shaping tools (2, 4; 102, 104) is detached. The internal geared wheel (17) is detached from the slanted toothing(s) by means of a stripping member (18).

Inventors: Putz; Karl Heinz (Cologne, DE), Stein; Bernd (Bonn, DE), Steinhauer; Heinz (Troisdorf, DE), Zimmermann; Wilhelm (St. Augustin, DE)

Assignee: Dynamit Nobel GmbH Explosivstoff- und Systemtechnik

International Classification: B21K 1/28 (20060101); B21D 22/16 (20060101); B21D 22/00 (20060101); B21K 1/30 (20060101); B21H 7/18 (20060101); B21H 5/00 (20060101); B21H 7/00 (20060101); B21H 5/02 (20060101); B21H 3/08 (20060101); B21H 1/00 (20060101); B21H 1/04 (20060101); B21H 3/00 (20060101); B21D 022/16 ()

Expiration Date: 07/03/2018