PRESSURE WELDING DEVICE AND PRESSURE WELDING METHOD USING AN ADVANCE DRIVE DESIGNED AS AN ELECTRO-HYDRAULIC DIRECT DRIVE

摘要

The invention relates to a pressure welding device (1) and a pressure welding method. The pressure welding device (1) comprises a plastification unit (5), a positioning and compressing unit (6), a controller (26), and an advance unit (7) for a workpiece (3) and for the process axis (13). The advance unit (7) has an open- or closed-loop controllable hydraulic advance drive (12) that is formed as an open- or closed-loop controllable electro-hydraulic direct drive for the process axis (13).