Device and method for bending a workpiece

US9003847B2 · kind B2 · utility

Assignee

• TRUMPF Maschinen Austria GmbH & Co. KG · AT

Inventors

• Ferdinand Bammer · Wien, AT
• Dieter Schuoecker · Wien, AT
• Armin Rau · Gmunden, AT
• Joachim Aichinger · Ansfelden, AT
• Gerhard Sperrer · Kirchdorf an der Krems, AT
• Thomas Schumi · Wien, AT

Key dates

• Filing date: Jun 29, 2010
• Grant date: Apr 14, 2015
• Expiry date: Jan 18, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21D37/16
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a method for bending a flat workpiece (2), comprising the discharge of high-energy radiation (19) in the form of at least one planar fanned beam (24) from a bending recess (12) of a die arrangement (3) having a bending die (7) onto a workpiece (2) bearing against a contact surface (11) of the bending die (7) for the local heating thereof before and/or during a bending process. The one or more planar fanned beams (24; 24a. 24b, . . . ) are produced by a number of optionally activatable radiation sources (22a, 22b, . . . ) which are arranged within the die arrangement (3) along the bending recess (12) or are caused by the distribution of a concentrated radiation beam (40) that is introduced from a radiation source (39) outside the bending dies (7a, 7b, . . . ) via a number of beam affecting arrangements (23a, 23b, . . . ) within the bending dies (7a, 7b, . . . ) and the exiting radiation (19) is thereby adjusted to the bending length (21) of the workpiece to be bent (2) via the number of planar fanned beams (24, 24a, 24b, . . . ).