Force reaction compensation system
US8735774B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2009 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Aug 11, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser beam propagates along a beam axis for incidence on a work surface mounted on a support. The support operatively connects to a positioning system moving at least one of the laser beam and the target specimen relative to each other to position the laser beam at selected locations on the work surface. At least one force reaction compensation motor is located in a common force plane with, and as close as possible to, a corresponding stage motor. Any moment arm between the compensation motor and the corresponding stage motor is reduced or eliminated, allowing the compensation motor to directly couple and react to stage forces with virtually zero moment arm. Six degrees of freedom can be controlled with only four motors, since each compensation motor is directly coupled and aligned to a corresponding stage motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.