Patent · US Active

Ascertaining a laser beam contact point

US8258430B2 · kind B2 · utility

1Cited by

2References

22Claims

0Family size

Assignee

TRUMPF Werkzeugmaschinen GmbH + Co. KG · DE

Inventors

Juergen-Michael Weick · Asperg, DE
Andreas Milich · Hemmingen, DE
Ulrich Ritter · Ortenberg, DE

Key dates

Filing date	Dec 17, 2009
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Oct 16, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01H9/00
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.