Locking drill chuck
US7654539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2006 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Nov 3, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/32
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A locking drill chuck comprises a chuck body, a plurality of jaws, a nut, a front sleeve, and a rear sleeve, wherein the chuck body has an axial hole at its rear end for engaging with a driving shaft of a driving means, and the rear sleeve close fits with the outer circumference of the rear end of the chuck body, the jaws are separately fitted in a plurality of corresponding inclined holes equally departed away from each other in the chuck body, the nut engages with the jaws, the locking drill chuck further comprises a locking sleeve provided between the front sleeve and the rear sleeve, and connected with the front sleeve; and a locking assembly provided between the nut and a stop surface of the chuck body, the locking assembly includes rolling members and a locking plate, wherein the locking plate connects with the locking sleeve, and has a plurality of eccentric grooves in an end plane thereof, the rolling members is received in the eccentric grooves, the stop surface of the chuck body includes a conical portion and a plane portion. The locking drill chuck in accordance with the present invention is convenient for machining process, with lower product cost, and is more steady an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.