Apparatus and method for piercing and trimming hot stamped parts
US10486215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Mar 1, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R19/03
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A die apparatus including a first die element and a second die element is provided. The first die element is arranged with the second die element for disposal of a blank therebetween and includes a coolant channel and a trim groove for alignment with a trim line of the blank. A groove insert is disposed within the trim groove arranged to support a portion of the blank extending thereover and to reduce a cooling rate of the blank. The groove insert may be of a material including reflective radiation characteristics to reduce heat transfer from portions of the blank adjacent the trim line. The first die element may include a cavity aligned with a pierce region of the blank so that the pierce region does not contact an adjacent die element surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.