Method of processing a workpiece
US5674111A · kind A · utility
6Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Mar 23, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49998
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A workpiece is processed to manufacture a poppet valve comprising a larger diameter head and a stem. First, the stem is ground to correct bending and warping and to remove black skin formed by a mold releasing agent, and, then the stem of the workpiece is cut, thereby preventing variation of the total length and wear of support rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.