Tool fastening device
US4352612A · kind A · utility
11Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1980 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Jul 8, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/309464
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool fastening device comprises a drawbar (21, 22; 47, 48) for clamping a tool holder (10; 40) to a spindle (11; 41) of a machine tool by frictional engagement with a conical bore therein. The drawbar is connected to the tool holder by radially expansible locking means (23; 50) on the drawbar. The locking means is actuated by means of an expansion rod (28; 52). For purposes of facilitating the operation of the expansion rod there is provided forcing means (30; 57) which continuously forces the expansion rod toward the tool holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.