Patent ID: 7636612
Filing Date: 2009-12-22
Classification: B21D,G05B

Abstract:
1. A simulation method for determining a movement sequence for a workpiece-specific workpiece transport as a function of one of tool movement and ram movement in a press having a plurality of machining stations and a plurality of transfer units arranged between the machining stations, the method comprising the steps of: supplying a data set including press machine data, tool-specific data and process-specific data to a simulator program assigned to a press control of the press; using the data in the simulation program to calculate a default displacement curve having coordinates corresponding to support points in a 3D CAD press model; using the simulation program to perform a collision check between the at least one of the tool and the ram of the press and the workpiece for at least a first press transfer unit; varying the support point coordinates on the displacement curve to correct an error on the displacement curve if a potential collision is detected; performing the collision check, and support point coordinate variation step as needed, for subsequent press transfer units; determining an overall collision-free movement pattern by accounting for a possible collision between the press transfer units; and transmitting the overall collision-free movement pattern to the press control.