Patent ID: 6176365
Filing Date: 2001-01-23
Classification: B21D

Abstract:
Method for switching a transfer system for the workpiece transport along several working stations, including press stations in an emergency operating mode, comprising:at least one transfer rail having a longitudinal orientation which coincides substantially with a direction into which workpieces are to be transported in a timed manner and having devices operatively associated therewith for receiving and holding the workpieces;a plurality electric direct drives having outputs connected with and driving the at least one transfer rail with a coinciding force direction such that the electric direct drives form a group of drives for a defined axial direction; anda control device which controls in a substantially coinciding manner the electric direct drives pertaining to the group of drives and which takes up an emergency operating mode in an event caused by breakdown of one of the direct drives or of a portion of the control device associated with the direct drive, whereinin the emergency operating mode, the control device is configured to switch the electric direct drive of the group of drives affected by the breakdown to be substantially unpowered, andin the emergency operating mode, the control device is configured to continue to control unaffected electric direct drives and guide the at least one transfer rail and the associated holding devices out of the working stations.