Item with external teeth and method of forming the same
US6279366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Jul 13, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49471
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Using a form roller in which a plurality of gear-like tooth generating sections are arranged along the rotation axis of the form roller in the outer periphery thereof to increase tooth heights of the tooth generating sections in a stepwise manner along the rotation axis, a plurality of teeth are generated stepwise in the outer periphery of a metallic material by pressing the plurality of gear-like tooth generating sections of the form roller in increasing order of tooth height against the outer periphery of the rotating metallic material while transmitting the rotation force of the metallic material to the form roller to roll the form roller along the outer periphery of the metallic material, and are finished to size by cold pressing. In this manner, external teeth can be generated in the outer periphery of the metallic material with high efficiency and accuracy and without decreasing strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.