The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 2018
Filed:
Dec. 11, 2015
Trumpf Werkzeugmaschinen Gmbh + Co. KG, Ditzingen, DE;
Martin Spiess, Gerlingen, DE;
Patrick Mach, Gerlingen, DE;
TRUMPF Werkzeugmaschinen GmbH + Co. KG, Ditzingen, DE;
Abstract
Methods and systems are implemented for forming a through hole in a workpiece using a laser beam and a process gas, such as oxygen or nitrogen, coming from a gas nozzle. A hole is formed in the workpiece using the laser beam and a process gas emerging from a gas nozzle, such that the formed hole extends only partially through the workpiece. A bulge deposited while forming the hole partially through the workpiece is removed from the workpiece surface by directing a flow of gas through the nozzle toward the workpiece surface as the nozzle is moved with the laser beam switched off, the flow of gas being delivered to the nozzle at a higher pressure than the process gas is delivered to the nozzle during forming the hole partially through the workpiece. Then, the hole is fully pierced through the workpiece by the laser beam using the process gas.