Mitsubishi Denki Kabushiki Kaisha

Toshihiro Enya

Takashi Kanaya

Tsuneo Kawaguchi

Hidetoshi Kawatsu

In an electric discharge machining apparatus using linear motor drive in which a machining power supply unit supplies an inter-electrode space between an electrode ( ) and a workpiece ( ) with a machining power and the workpiece ( ) is machined while the electrode ( ) and the workpiece ( ) are moved in relation to each other by means of a driving device ( ) implemented by a linear motor, a magnet supporting plate ( ) for supporting a magnet ( ) which is on the secondary side of the linear motor; a base plate ( ) formed with at least one hole portion ( ); a spacer ( ) for holding the magnet supporting plate ( ) and the base plate ( ) while leaving a predetermined space therebetween; and a compressor, ( ), a dryer ( ), a lubricator ( ) and a regulator ( ) for injecting compressed gas ( ) from the hole portion ( ) toward the magnet supporting plate ( ) are provided. By making the compressed gas ( ) into collision with the magnet supporting plate ( ) as a collision jet, the heat conductivity increases, so that it is possible to cool the magnet ( ) and the magnet supporting plate ( ) efficiently with a simple configuration.

Electric discharge machining apparatus linear motor drive

In a machining liquid processing unit in an electric discharge machine selectively using two types of machining liquid of a first machining liquid not containing therein powder material and a second machining liquid containing conductive powder material mixed therein, a movable shooter is movably provided between a first position where a machining liquid is flown to a first storage section in a machining liquid vessel and a second position where a machining liquid is flown to a second storage section, and the machining liquid discharged from a machining liquid discharge port formed in the machining liquid vessel in an electric discharge machine is selectively flown to either of the first storage section or the second storage section by the movable shooter.

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Tokyo, Japan

Toshihiro Enya