Producing method, producing apparatus and producing equipment line of press formed product
US10596613B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Sep 3, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D47/01
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A producing method of the press formed product includes a preparation step of preparing a metal sheet as a starting material; and a press working step of performing press working on the starting material. The press working step includes: during a time period from when pushing-in of the starting material into the die by the punch is started or immediately thereafter until the pushing-in of the punch with respect to the die reaches a predetermined distance short of a bottom dead point for the pushing-in, holding the pad at a position distant from the punch by the predetermined distance; when the pushing-in of the punch with respect to the die reaches the predetermined distance short of the bottom dead point, receiving the pad in the die; and continuing the pushing-in of the punch with respect to the die and the pad to the bottom dead point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.