Apparatus and method for clamping and positioning workpiece in machine tools

US4775135A · kind A · utility

Assignee

• TRUMPF INC. · DE

Inventors

• Berthold Leibinger · Gerlingen, DE
• Eugen Herb · Ditzingen, DE

Key dates

• Filing date: Sep 19, 1986
• Grant date: Oct 4, 1988
• Expiry date: Sep 19, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23D33/10
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A machine tool employs a workpiece guidance system comprising a pair of guide assemblies each including a stop member movable along one of the X and Y axes and a clamping element for clamping the workpiece in the stop member for movement therewith. The clamping element is movable independently of its associated stop member as well as therewith, and one stop member will provide a guide surface for the workpiece as it is moved past it by the other guide assembly. In one embodiment, the clamping element is a claw or clamp in a fixed position on the stop member and which is automatically actuable to clamp the workpiece or to release the workpiece for guided movement thereby. In another, the clamp is slidably supported in the stop member for movement relative to a base element to provide clamped guiding movement for the workpiece and also can be locked in a position to fix the workpiece therefor. The machine tool also includes a computer control system for operating the motors which drive the guide assemblies and for operating the hydraulic mechanisms.