The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2016
Filed:
Sep. 22, 2012
Applicant:
Sona Blw Prazisionsschmiede Gmbh, Remscheid, DE;
Inventors:
Assignee:
SONA BLW PRAZISIONSSCHMIEDE GMBH, Remscheid, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K 1/30 (2006.01); B21J 5/12 (2006.01);
U.S. Cl.
CPC ...
B21K 1/30 (2013.01); B21J 5/12 (2013.01);
Abstract
A method of manufacturing a gear wheel with stub toothing for a change-speed gearbox includes drop-forging a gear wheel body and forming the stub toothing by cold die-grooving in the forging die using a forming tool with forming parts which are arranged in a fan-shaped manner. The forming ends penetrate into the tooth spaces, wherein the forming parts are guided jointly between an upper and a lower receiving plate and are moved in a direction radially inwards in such a way that material is displaced out of the region of the tooth flanks into the tooth root regions.