Abstract: A sealing apparatus comprises a circulating channel for a wire cutting machine, and the sealing apparatus further includes a channel at the position of a lower arm in the fluid tank for injecting a liquid, and a sealing O-ring installed at the sealing apparatus for preventing a leak of liquid, such that a circulating channel is formed around the periphery of the lower arm. The liquid is injected through an injecting inlet into the circulating channel such that the centrifugal force produced by the whirling flow can wash away the debrises attached on the lower arm, and discharge the debrises from a discharge opening to the outside.

Abstract: A waterproof structure in a tank. The circuit board required for discharge machining in the tank is disposed outside the tank. The inner wall of the tank is provided with a waterproof component with a downward opening. The circuit board along with other elements is connected to an electrode contact disposed in the waterproof component. When the machining liquid is full, the air pressure in the air storage space of the waterproof component balances with the liquid pressure at the opening. This prevents the machining liquid from spilling onto the electrode contact and resulting in the bypassing circuit effect. Moreover, the waterproof component can be used at the electrode contact of each base of the conductive platform, providing the same protection.

Abstract: The present invention discloses a sealing apparatus having a circulating channel for a wire cutting machine, and the sealing apparatus includes a channel at the position of a lower arm in the fluid tank for injecting a liquid, a sealing O-ring installed at the sealing apparatus for preventing a leak of liquid, such that a circulating channel is formed around the periphery of the lower arm. The liquid is injected through an injecting inlet into the circulating channel such that the centrifugal force produced by the whirling flow can wash away the debrises attached on the lower arm, and discharge the debrises from a discharge opening to the outside.

Abstract: An apparatus of asynchronous electric discharge machine for wire cut adopted for use in machine industries employs a first electric discharge machine unit and a second electric discharge machine unit to provide electric energy to a cutting wire to generate alternate ignition and discharge on a work piece. The asynchronous operation uses two different discharge circuits in two different time sequences to reduce the probability of occurring discharge at the same spot and effectively reduce pause time, and prevent the cutting wire from rupturing, thereby to reduce production cost and improve operation efficiency.

Abstract: An apparatus of asynchronous electric discharge machine for wire cut adopted for use in machine industries employs a first electric discharge machine unit and a second electric discharge machine unit to provide electric energy to a cutting wire to generate alternate ignition and discharge on a work piece. The asynchronous operation uses two different discharge circuits in two different time sequences to reduce the probability of occurring discharge at the same spot and effectively reduce pause time, and prevent the cutting wire from rupturing, thereby to reduce production cost and improve operation efficiency.

Abstract: A method and an apparatus for vertically calibrating a wire of a wire cutting electric discharge machine are provided. The vertical calibration apparatus includes a body, an upper calibration board and a lower calibration board attached to the body and parallel to a machine table, with a circular hole formed through the upper calibration board and on the lower calibration board respectively. The two circular holes are coaxial and have different diameters. The method of wire vertical calibration includes searching for the circle centers of the two circular holes by contacting the circles several times with the wire in a prescribed manner, then passing the wire through the circle centers. The method and apparatus allow wire vertical calibration to be more easily and accurately performed.

Abstract: A method and an apparatus for vertically calibrating a wire of a wire cutting electric discharge machine are provided. The vertical calibration apparatus includes a body, an upper calibration board and a lower calibration board attached to the body and parallel to the machine table, with a ring hole formed on the upper calibration board and on the lower calibration board respectively. The two ring holes have the same vertical axis. The method of wire cutting electric discharge machine vertical calibration comprises searching for the circle centers of the two ring holes by constantly touching the ring edge several times by the wire, then passing the wire through the circle centers.