Method and device for determining an actual state of supporting bars of a workpiece support, and machine tool having a device of this type

US12325092B2 · kind B2 · utility

Assignee

• TRUMPF Werkzeugmaschinen SE + Co. KG · DE

Inventors

• Manuel Kiefer · Sinsheim, DE
• Jens Ottnad · Karlsruhe, DE
• Willi Poenitz · Leonberg, DE
• Frederick Struckmeier · Heimsheim, DE
• Marc Teschner · Stuttgart, DE

Key dates

• Filing date: Sep 14, 2022
• Grant date: Jun 10, 2025
• Expiry date: Apr 29, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B11/2518
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method determines an actual state of a supporting bar for supporting a plate-like workpiece on a machine tool for a cutting the workpiece. The method includes: determining a geometry of supporting projections on the supporting bar by a light section method, which includes: projecting a longitudinal line of light onto a longitudinal side of the supporting bar; with the line of light, scanning the longitudinal side over a height region assigned to the supporting projections in the direction of the height of the supporting bar, detecting the scanned extent of the longitudinal side of the supporting bar to generate an image of the longitudinal side of the supporting bar, and determining the geometry of the supporting projections based on the generated image; and comparing the determined geometry of the supporting projections with the defined intended geometry of the supporting projections.