Drill assembly and method to reduce drill bit plunge
US8511945B2 · kind B2 · utility
52Cited by
43References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2009 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Apr 19, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/5653
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drill assembly and method for reducing plunge of a drill bit upon breaking through a workpiece. The drill assembly contains a motor to advance and retract the drill bit, the motor is controlled by a control unit in a feedback loop to achieve a desired stiffness. The control unit determines when the drill bit breaks through the workpiece and stops or retracts the movement of the drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.