Patent ID: 6729813
Filing Date: 2004-05-04
Classification: B23Q,Y10T

Abstract:
A spindlehead, insertable into a tool disk with holders therefor, comprising:a spindle having a front end section and a rear end section, said front end section having a chuck space for receiving a shank of a tool, said rear end section being mountable into the tool disk for rotation, said front end section being adjacent said rear end section; a spindlehead housing including at least one spindle bearing supporting said spindle in said housing for rotation about a longitudinal axis of said spindle; a coolant feed line in said spindle extending to said chuck space; at least one coolant feed channel in fluid communication with said coolant feed line for conveying coolant to the tool via said coolant feed line; a coolant drainage channel for conveying coolant from the tool; and a sealing device including at least one throttling point separated from parts of said coolant drainage channel and including first and second sealing rings extending about said spindle and being longitudinally movable within said housing coaxially along said longitudinal axis, said sealing rings being longitudinally movable to a sealing position separating said coolant feed line from said parts of said coolant drainage channel up to a specifiable leakage amount, said at least one throttling point including lubricant pouches in sealing surfaces of said sealing rings.