Determining a focal position of a laser

US8304691B2 · kind B2 · utility

Assignee

• TRUMPF Werkzeugmaschinen GmbH + Co. KG · DE

Inventors

• Wolfgang Scholich-Tessmann · Eppelheim, DE
• Andreas Milich · Hemmingen, DE

Key dates

• Filing date: Dec 21, 2007
• Grant date: Nov 6, 2012
• Expiry date: Jun 22, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K26/04
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method is performed for determining a suitable workpiece processing focal position of a laser beam. The method includes adjusting one or more of a laser beam and a workpiece until a periphery of the laser beam contacts a lateral edge of the workpiece, determining, from at least a focal position of the laser beam associated with the peripheral beam contact with the workpiece, a suitable workpiece processing focal position of the laser beam, and then adjusting the laser beam to the suitable workpiece processing focal position.