SYSTEM FOR CLAMPING ALL RECTANGULAR CROSS-SECTION BLANKS IN 3-SPINDLE 5-AXIS MACHINES FOR MACHINING STEAM TURBINE BLADES

摘要

The main object of the present invention is to provide a modified clamping system for clamping all rectangular cross-section blanks for machining steam turbine blades in 3- spindle, 5-axsis machines. Another object of the present invention is to provide 3-spindle, 5-axis machine for turbine blade machining with the modified clamping arrangement. In a preferred embodiment, the present invention provides a system for clamping all rectangular cross-section blanks in a 3-spindle, 5-axis machine for machining steam turbine blades, said system comprising a piston-cylinder assembly having a spring loaded arrangement with a jaw for keeping a blank to be machined pushed forward so as to keep the blank in vertically straight position; characterized in that said jaw is provided with a threaded hole with an extension bolt fitted thereto, thereby extending the length of the piston to accommodate clamping blanks of all cross-section.