US 11,904,381 B2
Method for producing a gear worm which is located in particular on an armature shaft, and such a gear worm
Jie Bao, Shanghai (CN); Bernhard De Graaff, Karlsruhe (DE); Daniel Cettier, Karlsruhe (DE); Guang Qiao, Shanghai (CN); Holger Thoene, Rastatt (DE); Otmar Hertwig, Buehl (DE); and Volker Hertweck, Baden-Baden (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/285,219
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Oct. 4, 2019, PCT No. PCT/EP2019/076863
§ 371(c)(1), (2) Date Apr. 14, 2021,
PCT Pub. No. WO2020/078734, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 10 2018 217 617.5 (DE), filed on Oct. 15, 2018.
Prior Publication US 2022/0055092 A1, Feb. 24, 2022
Int. Cl. B21H 5/00 (2006.01); E05F 15/697 (2015.01); B23P 15/14 (2006.01); B24B 21/00 (2006.01); B24B 21/16 (2006.01); B24B 49/14 (2006.01); B24D 15/00 (2006.01); F16H 55/24 (2006.01); F16H 57/00 (2012.01); F16H 57/04 (2010.01); B22F 3/18 (2006.01); B22F 3/16 (2006.01); B60N 2/02 (2006.01)
CPC B21H 5/005 (2013.01) [B22F 3/18 (2013.01); B23P 15/14 (2013.01); B24B 21/006 (2013.01); B24B 21/16 (2013.01); B24B 49/14 (2013.01); B24D 15/00 (2013.01); E05F 15/697 (2015.01); F16H 55/24 (2013.01); F16H 57/0006 (2013.01); F16H 57/0498 (2013.01); B22F 2003/166 (2013.01); B60N 2/02253 (2023.08)] 12 Claims
OG exemplary drawing
 
1. A method for producing a gear worm (12), the method comprising forming, with a roller burnishing tool, a worm toothing system (20) with worm flanks (22) which lie axially opposite one another on a longitudinal axis (18), and thereafter configuring on the worm flanks (22) a groove structure (24) which is concentric about the longitudinal axis (18), wherein the concentric groove structure (24) is produced by belt grinding.