Forging and inclined window hole punching composite die
US11203052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2019 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Dec 29, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K1/38
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A forging and inclined window hole punching composite die includes an upper die holder, a connection sleeve, an upper die sliding sleeve, a pressure plate, inclined window puncher pins, a center puncher pin, first connection screw rods, first springs, second connection screw rods, second springs, hydraulic assistant systems, a lower die and a bottom plate. Bottom surface of the pressure plate of the composite die is a plane to avoid deformation of a front molding surface. Hydraulic power is added to the inclined window puncher pins to increase the pressure for punching inclined holes, avoid quality problems and increase a demolding force. A multi-split synchronous hydraulic device may well realize synchronization of the plurality of inclined window puncher pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.