公开(公告)号：US11904381B2

公开(公告)日：2024-02-20

申请号：US17285219

申请日：2019-10-04

申请人： Robert Bosch GmbH

发明人： Jie Bao ,  Bernhard De Graaff ,  Daniel Cettier ,  Guang Qiao ,  Holger Thoene ,  Otmar Hertwig ,  Volker Hertweck

IPC分类号： B21H5/00 ,  E05F15/697 ,  B23P15/14 ,  B24B21/00 ,  B24B21/16 ,  B24B49/14 ,  B24D15/00 ,  F16H55/24 ,  F16H57/00 ,  F16H57/04 ,  B22F3/18 ,  B22F3/16 ,  B60N2/02

CPC分类号： B21H5/005 ,  B22F3/18 ,  B23P15/14 ,  B24B21/006 ,  B24B21/16 ,  B24B49/14 ,  B24D15/00 ,  E05F15/697 ,  F16H55/24 ,  F16H57/0006 ,  F16H57/0498 ,  B22F2003/166 ,  B60N2/02253

摘要： The invention relates to a method for producing a gear worm (12) which is located in particular on an armature shaft (14) of an electromotive drive unit (10), wherein firstly a worm gear (20) having screw flanks (22) axially opposite one another on a longitudinal axis (18) is formed by means of a rolling tool, and subsequently a groove structure (24) which is concentric about the longitudinal axis (18) is formed on the screw flanks (22) by means of an additional process step. The invention also relates to a gear worm (12) produced according to the method according to the invention, and to a transmission drive unit (10) containing such a gear worm (12).

公开(公告)号：US20220055092A1

公开(公告)日：2022-02-24

申请号：US17285219

申请日：2019-10-04

申请人： ROBERT BOSCH GMBH

发明人： Jie Bao ,  Bernhard De Graaff ,  Daniel Cettier ,  Guang Qiao ,  Holger Thoene ,  Otmar Hertwig ,  Volker Hertweck

IPC分类号： B21H5/00 ,  B23P15/14 ,  B24B21/00 ,  B24B21/16 ,  B24B49/14 ,  B24D15/00 ,  E05F15/697 ,  F16H55/24 ,  F16H57/00 ,  F16H57/04

摘要： The invention relates to a method for producing a gear worm (12) which is located in particular on an armature shaft (14) of an electromotive drive unit (10), wherein firstly a worm gear (20) having screw flanks (22) axially opposite one another on a longitudinal axis (18) is formed by means of a rolling tool, and subsequently a groove structure (24) which is concentric about the longitudinal axis (18) is formed on the screw flanks (22) by means of an additional process step. The invention also relates to a gear worm (12) produced according to the method according to the invention, and to a transmission drive unit (10) containing such a gear worm (12).