Multiple stroke slotting of planar workpieces

US11325176B2 · kind B2 · utility

Assignee

• TRUMPF Werkzeugmaschinen GmbH + Co. KG · DE

Inventors

• Markus Wilhelm · Gerlingen, DE
• Rainer Hank · Lambach, DE
• Marc Klinkhammer · Ditzingen, DE
• Leonard Schindewolf · Rutesheim, DE
• Simon Ockenfuss · Eppelheim, DE
• Jens Kappes · Echterdingen, DE
• Dennis Traenklein · Nufringen, DE
• Alexander Tatarczyk · Spaichingen, DE
• Joerg Neupert · Stuttgart, DE
• Dominik Bitto · Strohberg, DE
• Markus Maatz · Echterdingen, DE
• Christian Jakisch · Eppelheim, DE

Key dates

• Filing date: Mar 25, 2019
• Grant date: May 10, 2022
• Expiry date: Mar 25, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B26F1/14
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method for multiple-stroke slotting of planar workpieces includes positioning a workpiece relative to a slotting tool having a punch and a die, moving the punch and the die relative to one another, moving the slotting tool and the workpiece relative to one another, slotting a workpiece by a slot length during a sectioning slot stroke and at least one subsequent slotting stroke in a sectioning phase, and performing strokes in form of slotting strokes and at least one trimming stroke during the relative movement of the punch and the die in a working phase. The subsequent slotting stroke is performed prior to the trimming stroke, and the slot length exceeds a maximum attainable slot length during the trimming stroke. The workpiece and the slotting tool are moved relative to one another by at least one feed movement between the strokes.