Patent ID: 6394940
Filing Date: 2002-05-28
Classification: B23Q,Y10T

Abstract:
A chip suction type machine tool comprising:a tool attaching part 200 having a vent hole s1 for discharging chips and air through an inside of a hood means 13 that surrounds a cutting tool 11; a spindle head 100 having an air suction hole s2 that communicates with said air vent hole s1; said tool attaching part 200 installed in the spindle head 100; wherein a downstream end part of said vent hole s1 is closely faced to an upstream end part of said air suction hole s2 with the tool attaching part 200 installed in the spindle head 100; wherein a telescoping cylinder means 201 is provided between said downstream and upstream end parts, being extendable or retractable relative to at least one of the end parts; wherein said telescoping cylinder means 201 is retracted, by means of an elastic member 205 to separate the downstream end part from the upstream end part; and wherein the telescoping cylinder means 201 is extended by negative pressure when the negative pressure is given to the air suction hole s2 with the tool attaching part 200 installed on the spindle head 100, thereby closely connecting the downstream end part with the upstream end part.