Servo motor for actuating a mandrel while extruding helical teeth
US8215880B2 · kind B2 · utility
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10References
10Claims
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Assignee
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Key dates
| Filing date | Oct 3, 2008 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | May 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for extruding helical teeth in a gear blank includes a press including a die plate and a die base, the die plate being movable along an axis relative to the die base, the die base supporting the gear blank. A mandrel, aligned with the axis and moveable with the die plate along the axis, includes a surface that includes helical die teeth. A servo motor drives the mandrel in rotation about the axis to the required helix angle as the mandrel moves axially relative to the gear blank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.