Twist drill sharpener and aligning fixture
US4001975A · kind A · utility
19Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Jul 9, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/17598
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A twist drill sharpener employing a rotary grinding wheel has a twist drill chuck which mounts a pair of cams which are locked to the chuck when the lips of the twist drill are aligned in an aligning fixture and then the chuck, cams and drill are inserted in a second fixture provided with a pair of cam followers which in conjunction with the chuck carried cams control the grinding of the twist drill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.