Method for locally deforming a round tube into a tube comprising planar surfaces and a forming punch for carrying out said method
US4513601A · kind A · utility
13Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D15/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The forming punch (18) comprises two planar surfaces (20, 22) interconnected by an edge (23), two portions of a cylinder which passes through the edge (23) and a curved surface centered on this edge. This punch (18) is inserted in the tube to the point of the tube to be deformed and then the tube is compressed between a V-shaped groove (34) in a die (36) and a curved groove (40) in a compression member (38). The punch (18) is thereafter withdrawn from the tube by axially sliding the punch out of the latter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.