Stretch bender
US6679091B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Jun 29, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D25/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A stretch bending device that can conduct accurate bending without using heavy material. A tension application mechanism 62 comprises first and second drive sources for movably supporting both ends of a guide member 12 with respect to a pair of arm members 28, 30 and moving the guide member 12 along the arm members 28, 30. Between the arm members 28, 30, a work piece 6 is arranged. There are tension sensor 98 for detecting tension applied to the work piece 6 and position sensors for detecting positions of the guide member 12. Torque of the first drive source is controlled based on the tension detected by the tension sensor 98, and the second drive force is controlled based on the positions detected by the position sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.