Laser processing heads with a cross-jet nozzle
US10654129B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2016 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Apr 8, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/1476
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser machining head includes a focusing optical unit for focusing a laser beam in a direction of a machining zone of a workpiece and includes a cross-jet nozzle for producing a cross flow that passes through the focused laser beam transversely (e.g., at a right angle to) a beam axis of the focused laser beam. The distance of the cross-jet nozzle from the workpiece is less than 20 mm (e.g., between 8 mm and 12 mm). A nozzle body having a bottom opening that faces downward toward the workpiece is provided laterally adjacent to the focused laser beam. A protective gas flows out of the bottom opening, which is arranged below the cross-jet nozzle in order to entrain the protective gas flowing between the nozzle body and the workpiece due to the cross flow of the cross-jet nozzle so that the protective gas flows over the machining zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.