Punch and die assembly
US12420326B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2020 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Mar 26, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D28/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A punch and die assembly for a forming assembly for forming flared openings in commercial forming steel sheeting, includes a punch. The punch has a punching element having a base portion and a working portion that extends from a face of the base portion, the working portion defining a working edge with more than two substantially evenly spaced peaks and troughs for forming an opening in the steel sheeting during a working stroke. A flaring element is mountable on the base portion of the punching element, a side of the flaring element defining an arcuate flaring surface that tapers inwardly in the direction of the working stroke. A die supports the steel sheeting, the die having a die opening with a flared die face for facing the flaring surface of the flaring element such that the opening in the steel sheeting is flared by the flaring surface of the flaring element and the die face in the working stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.