Trough-form fine blanking device
US9676020B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 4, 2014 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Aug 4, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9425
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fine blanking device characterized by a trough structure is provided. Preferably, the fine blanking device comprises a punch, a mother die module having a first die cavity allowing the punch to enter therein, and a blank-holder module having a second die cavity allowing the punch to enter therein; wherein one or more trough structures are formed on/individually formed on the mother die module or/and the blank-holder module, wherein the trough structure is formed, surrounding the first die cavity, on the mother die module at a sheet stock contacting side thereof; or/and the trough structure is formed, surrounding the second die cavity, on the blank-holder module at a sheet stock contacting side thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.