Forming method, forming tools and elastic punch
US6029486A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Nov 19, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A forming method of forming a plate-shaped workpiece using a female tool having a concave section of a desired shape and a male tool which matches with the female tool, includes the following steps: providing an elastic punch in a cylindrical holder provided in the male tool; pressurizing and compressing the elastic punch relatively by a pressuring member; pressing the holder against the workpiece by means of one portion of the elastic punch; and projecting one portion of the elastic punch from the holder so as to deform a portion of the workpiece to be processed according to the shape of the concave section of the female tool so that the workpiece is formed in a state such that the workpiece is nipped pressingly between the female tool and the holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.