Device for controllable stretching of thin materials
US6666810B1 · kind B1 · utility
1Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2000 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Apr 4, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26D7/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A worktable that can be used to support a substrate while forming a hole therein. The worktable may include one or more actuators that stretch the substrate. The worktable may also have a control unit that is connected to the actuators and strain gauges that sense the strain in the substrate. The control unit, actuators and strain gauges may provide a closed loop control system for tensioning the substrate. The center portion of the substrate may be supported by wires that extend across an opening in the worktable. The opening eliminates a backing surface that may interfere with a laser hold forming process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.