Continuous extrusion using dynamic shoe positioning
US6871522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2003 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Sep 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C23/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A continuous extrusion machine has a chassis (1) supporting a wheel (2) for rotation by a motor. An endless groove (7) extends around the periphery of the wheel (2). A shoe (3) is mounted in the chassis (1) and has an enveloping surface shaped to closely envelop an arc of the wheel (2) periphery so that the groove (7) co-operates with the shoe (3) to form a passage. An abutment is mounted on the shoe (3) to extend into the passage at a downstream end. Tooling is mounted in the shoe (3) including a die such that a material such as aluminum or copper bar fed into the groove (7) is extruded through the die as a consequence of the energy transfer via friction from the rotating wheel (2). A gap (12) exists between the enveloping surface and the wheel (2). The gap (12) is used to provide the orifice of a sonic gap (12) sensor whereby the size of the gap (12) can be accurately and directly measured. The gap (12) size sensed is used to control the position of the shoe (3) in two directions mutually perpendicular to the rotary axis of the wheel (2) by adjusting support structures which support the shoe (3). The size and shape of the gap (12) can thus be safely adjusted while the machine is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.