Mechanical joining apparatus and mechanical joining method
US10722935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2016 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Sep 30, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21J15/36
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided is a mechanical joining apparatus enabling stable riveting when joining metal sheets even when the sheets are large in deformation resistance, the apparatus comprising a punch and die, blank holder and power device, wherein the punch and die are arranged facing each other, the holder is configured by an electrode material able to push against and electrically heat the sheets by one end of the holder, the punch is comprised of a material able to drive in a rivet, the die is comprised of an electrode material able to support and electrically heat the sheets, and the power device is configured to start supply of current through the holder and die so as to raise the temperature of the sheets at the same time as the start of driving in of the rivet and to continue to supply current until the end of driving in of the rivet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.