Method for manufacturing an extruded article changing in cross-section and an apparatus for extruding said extruded article
US6470726B1 · kind B1 · utility
14Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2000 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Nov 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C37/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An extruded article which has at least one hollow portion and changes in cross-section along a direction of an extrusion axis is manufactured by the method. The method includes the step of advancing a punch to extrude a billet while controlling a movement of a mandrel for defining an inner periphery of the hollow portion relative to a die for defining an outer periphery of the extruded article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.