Patent ID: 6059702
Filing Date: 2000-05-09
Classification: B23Q,Y10T

Abstract:
A machine tool comprising:a spindle having a tool receptacle for receiving tool holders, and an internal duct running longitudinally through said spindle to said tool receptacle,a tool changing apparatus for transferring tool holders between their respective magazine position and their working position in said tool receptacle,an internal cooling system with a coolant supply to deliver coolant from said coolant supply through said internal duct to a tool holder when clamped into said tool receptacle, in order to supply coolant to a tool holder that is in use, anda flushing apparatus connected to the coolant supply and operative to flush a tool holder with coolant while said tool holder is being transferred by said tool changing apparatus,wherein the flushing apparatus comprises nozzles, acting predominantly tangentially to the tool holder, to flush in controlled fashion the tool holder on its annular surface.