Rack and a method for producing a rack for a steering gear of a motor vehicle
US11077875B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 4, 2017 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Sep 6, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K1/767
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.