Invention Grant
- Patent Title: Rack and a method for producing a rack for a steering gear of a motor vehicle
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Application No.: US16315981Application Date: 2017-07-04
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Publication No.: US11077875B2Publication Date: 2021-08-03
- Inventor: Reinhard Bader , Markus Mages , Ralf Eckstein , Juergen Dohmann , René Feuerstein
- Applicant: THYSSENKRUPP PRESTA AG , thyssenkrupp AG
- Applicant Address: LI Eschen; DE Essen
- Assignee: THYSSENKRUPP PRESTA AG,thyssenkrupp AG
- Current Assignee: THYSSENKRUPP PRESTA AG,thyssenkrupp AG
- Current Assignee Address: LI Eschen; DE Essen
- Agency: thyssenkrupp North America LLC
- Priority: DE102016212303.3 20160706
- International Application: PCT/EP2017/066625 WO 20170704
- International Announcement: WO2018/007379 WO 20180111
- Main IPC: B62D3/12
- IPC: B62D3/12 ; B21K1/76

Abstract:
A rack for a steering gear includes a toothed portion with a toothing extending along a longitudinal axis, and a generally cylinder-segment-shaped back opposite the toothing and having a back radius. A method for producing such a rack includes forming a cylindrical blank with an unmachined radius between a toothed die part having a toothed mold clearance and a back die part having a back mold clearance in a die cavity. The die may have a generally cylinder-segment-shape. In an open position of the die, the blank may be inserted between the toothed mold clearance and the back mold clearance. The toothed die part and the back die part in a forging stroke for closing the cavity may then be moved in a closing direction to a closed position. The back radius of the back mold clearance may be larger than the unmachined radius of the blank.
Public/Granted literature
- US20190232998A1 RACK AND A METHOD FOR PRODUCING A RACK FOR A STEERING GEAR OF A MOTOR VEHICLE Public/Granted day:2019-08-01
Information query
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