Trumpf Werkzeugmaschinen Gmbh + Co. Kg

Ulrich Ritter

Gunther Krieg

Juergen-Michael Weick

Gerhard Hammann

Armin Horn

Dirk Fey

Wolfgang Scholich-Tessmann

Tobias Hagenlocher

Andreas Milich

Giovanni Sanfelici

Ulrich Meindl

A laser processing machine for processing workpieces includes a beam guide containing a gas atmosphere, and also includes an apparatus for investigating the gas atmosphere in the beam guide for impurities. The investigation apparatus makes use of the photoacoustic effect. The measuring apparatus has a measuring chamber and at least one measuring head, where the beam guide acts as the measuring chamber. As a measuring chamber, the beam guide contains the gas atmosphere that is to be investigated and also a modulated laser beam modulated. The measuring head(s) are integrated into the beam guide and are used to detect the photoacoustic effect in the measuring chamber.

Laser processing machine

A method of determining a contact point of a laser beam on an edge of a body and a system for performing the same, in which the method includes a) moving the laser beam relative to the edge in a spatial direction until the laser beam touches the edge, in which the spatial direction is at a right angle relative to an axis of the laser beam and in which the edge is formed at an opening, b) measuring acoustic oscillations produced photoacoustically during the movement of the laser beam, and c) determining the laser beam point of contact with the edge based on the measured acoustic oscillations.

Ascertaining a laser beam contact point

Growing community of inventors

Aystetten, Germany

Ulrich Ritter