Spindle head unit of a machining center
US4745673A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1987 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Aug 12, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T483/1726
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A spindle head unit having a bell crank lever (24) mounted pivotally on a spindle head (10) of a machining center to depress a drawbar (18) inserted through a spindle (14) mounted on the spindle head (10). One of arms of the bell crank lever (24) is located so as to be capable of being engaged with a guide cam (28) and a depressing end (24a) in the shape of a spherical protrusion which is not connected mechanically to an upper end (18a) of the drawbar (18) is formed in a free end of the other arm of the bell crank lever (24). The bell crank lever (24) is urged continuously by a spring means (32) so that the former arm is urged toward the guide cam (28).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.