Patent ID: 6510719
Filing Date: 2003-01-28
Classification: B21D,B25B,Y10T

Abstract:
A pressing tool for pressing home casing-like press fittings with a lifting cylinder device, said pressing tool comprising:a fluid pump having a pressure fluid; a cylinder element connected to said fluid pump; and a piston which can be advanced in the cylinder element by the pressure fluid of the fluid pump and can be reset by a return spring; a piston rod connected to said piston for moving an open die; and wherein the lifting cylinder device includes: a position measuring device which measures, without contact, a position of said piston, said piston being continuously measurable over a positioning range; a control unit; said position measuring device being connected to said control unit; said position measuring device comparing said position of said piston to values of said positioning range and actuating a two valued indication; said values comprising further: a tolerance range; an indication of complete extrusion; and an indication of defective extrusion.