Piercing method with heating
US10512962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2011 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Jul 9, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9428
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a piercing apparatus and a piercing method which drive a punch. The piercing apparatus includes a local heating device for heating part of the workpiece in a temperature range less than a melting point of the workpiece and a punch driving device for driving the punch toward the part of the workpiece which was heated by the local heating device. The piercing method includes a local heating step for heating part of the workpiece in a temperature range less than a melting point of the workpiece and a stamping step for driving the punch toward the part of the workpiece which was heated in the local heating step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.