Workpiece processing machine with retractable clamping device

US5701791A · kind A · utility

Assignee

• TRUMPF INC. · DE

Inventors

• Eckehart Schulze · Diez, DE
• Peter Bytow · Simmozheim, DE

Key dates

• Filing date: Sep 21, 1995
• Grant date: Dec 30, 1997
• Expiry date: Sep 21, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T83/7547
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A workpiece being processed on a machine tool is moved by control devices to the tool head or work station of the machine mechanically or automatically. A stop defines an area around the work station from which the holding devices must be kept to prevent damage. As soon as a holding device reaches the limit of the danger zone around the tool head, it is switched into a setting releasing the workpiece and moves into a position away from the work station. The machine has a switching element connected to each holding device to be so movable, and the switching element has a switching slide which is acted on by an applied force and is supported in a first position until it abuts the stop when one slide position connects the energy source to the drive of the holding device to move it away from the stop. In another slide position, the connection to the energy source is broken and the holding device returns to the workpiece holding position.