Patent ID: 6527279
Filing Date: 2003-03-04
Classification: B23B,Y10T

Abstract:
A power chuck assembly for a lathe, comprising:a hollow lathe spindle; a jaw chuck affixed on one end of said spindle and comprising a chuck body and jaws movably mounted on said chuck body; an actuating device for said jaws of said chuck including an actuating cylinder having a piston operatively connected to said jaws; a multiple medium feed device for supplying hydraulic fluid to said actuating cylinder; and a stroke control device including at least one sensor for a position of said piston and thereby of said jaws, at least one of said devices being integrated into and received in an interior of said hollow spindle, said spindle having an inner diameter enabling said one of said devices to be accommodated in said spindle, said hollow spindle having an inner diameter sufficient to accommodate said actuating cylinder and said multiple medium feed device in said hollow spindle, said actuating cylinder and said multiple medium feed device being received in said hollow spindle.