Patent ID: 6059296
Filing Date: 2000-05-09
Classification: B23B,B23Q,Y10T

Abstract:
A chuck for a rotatable tool, comprising a chuck sleeve receivable in a machine and having a central inner receptacle; a sleeve provided for a tool and releasably inserted in said receptacle, said chuck sleeve having a central main passage for a cooling and/or lubricating medium and grooves for supplying the cooling and/or lubricating medium in a longitudinal direction and outwardly of the tool, said sleeve having an axial opening adapted to extend over a whole length of a shaft of the tool for holding the shaft, said grooves for the cooling and/or lubricating medium in said sleeve being provided on an inner side of said axial opening and extending axially over a whole length of said sleeve, said grooves at one end communicating with said central main passage in said chuck sleeve and at another end being axially freely open, said chuck sleeve at an end facing away from said sleeve having a central, substantially truncated-cone shaped supply opening for the cooling and/or lubricating medium.