A cutting electrode head for a handheld electrical discharge machining (EDM) device comprising: a housing; a cutting electrode supported in the housing, and configured to move from a retracted position to an extended position along an electrode axis (C) to cut a workpiece; and an actuator supported in the housing and movable along a movement axis (E) which is at an angle to the electrode axis (C), wherein movement of the actuator along the movement axis (E) causes the cutting electrode to move between its retracted and extended positions.

An electrochemical machining device includes a plurality of electrodes, a guiding member and a plate member. The electrodes are disposed around a workpiece. The guiding member is configured to limit and guide each of the electrodes to move. The plate member is configured to exert a force to each of the electrodes. The driving member is configured to rotate the workpiece. The plate member is connected to each of the electrodes. A force-exerting direction of the force from the plate member to each of the electrodes is parallel to a central axis of each of the electrodes or deflects off the central axis. Each of the electrodes is passed through the guiding member and configured to perform a machining on the workpiece which is rotated by the driving member, and each of the electrodes has an electrochemical machining direction which is perpendicular, oblique or parallel to the workpiece.

An electrochemical machining device includes a plurality of electrodes, a guiding member and a plate member. The electrodes are disposed around a workpiece. The guiding member is configured to limit and guide each of the electrodes to move. The plate member is configured to exert a force to each of the electrodes. The driving member is configured to rotate the workpiece. The plate member is connected to each of the electrodes. A force-exerting direction of the force from the plate member to each of the electrodes is parallel to a central axis of each of the electrodes or deflects off the central axis. Each of the electrodes is passed through the guiding member and configured to perform a machining on the workpiece which is rotated by the driving member, and each of the electrodes has an electrochemical machining direction which is perpendicular, oblique or parallel to the workpiece.

The present invention discloses a multifunction integrated manufacturing system based on electrical machining, including a robot, a motion control unit, a multifunction composite electrical power supply, a working medium supply and recycle unit, a wire feeding device, a tool holder quick-change clamping unit, an electrical machining tool holder, a welding tool holder, a detection tool holder, and a workbench. By using the robot as an actuator, the system can implement discharge additive manufacturing including arc additive forming and micro electrical discharge deposition forming, discharge subtractive machining including efficient arc machining and precise electrical discharge machining, part joining based on arc surfacing, and online detection based on optical scanning and ultrasonic flaw detection. The present invention has a high integration level, covers machining and manufacturing of difficult-to-machine materials and micro parts, and can implement efficient and precise machining. The present invention can be implemented in a variety of media without environmental restrictions thus having a broad application range and having a strong application prospect in extreme environments such as space and deep sea.

The present invention discloses a multifunction integrated manufacturing system based on electrical machining, including a robot, a motion control unit, a multifunction composite electrical power supply, a working medium supply and recycle unit, a wire feeding device, a tool holder quick-change clamping unit, an electrical machining tool holder, a welding tool holder, a detection tool holder, and a workbench. By using the robot as an actuator, the system can implement discharge additive manufacturing including arc additive forming and micro electrical discharge deposition forming, discharge subtractive machining including efficient arc machining and precise electrical discharge machining, part joining based on arc surfacing, and online detection based on optical scanning and ultrasonic flaw detection. The present invention has a high integration level, covers machining and manufacturing of difficult-to-machine materials and micro parts, and can implement efficient and precise machining. The present invention can be implemented in a variety of media without environmental restrictions thus having a broad application range and having a strong application prospect in extreme environments such as space and deep sea.

This small-hole electric discharge machining machine for electric discharge machining of a workpiece by use of a rod-like or pipe-like electrode is equipped with: a first support part for supporting the base side of the electrode; a second support part for supporting the tip side of the electrode; and an intermediate guide device that is disposed between the first support part and the second support part, and guides the electrode. The intermediate guide device is equipped with: a guide part that has an open form and a closed form, and guides the electrode when in the closed form; a driving means for causing the guide part to transition between the open form and the closed form; and a biasing means for biasing the guide part in the closing direction when the guide part is in the closed form.

This fine hole electrical discharge machine applies voltage between a fine hole machining electrode and a workpiece to cause discharge, and machines a fine hole in the workpiece by using energy of the discharge. The fine hole electrical discharge machine comprises: a bendable guide tube having a hollow portion through which the electrode is inserted; and a tube holder that supports the leading end of the guide tube and allows the leading end of the guide tube to be inclined at a desired angle. Thus, even when the workpiece has a complicated shape, like a blisk, having a large number of turbine blades arranged in the circumferential direction, a fine hole can be machined by accurately positioning the electrode so as to orient the electrode toward a target machining point on a surface of the workpiece without involving interference with the workpiece.

This fine hole electrical discharge machine applies voltage between a fine hole machining electrode and a workpiece to cause discharge, and machines a fine hole in the workpiece by using energy of the discharge. The fine hole electrical discharge machine comprises: a bendable guide tube having a hollow portion through which the electrode is inserted; and a tube holder that supports the leading end of the guide tube and allows the leading end of the guide tube to be inclined at a desired angle. Thus, even when the workpiece has a complicated shape, like a blisk, having a large number of turbine blades arranged in the circumferential direction, a fine hole can be machined by accurately positioning the electrode so as to orient the electrode toward a target machining point on a surface of the workpiece without involving interference with the workpiece.

An electrical discharge machining device for processing a workpiece by electrical discharges generated between a tool and the workpiece is provided. The electrical discharge machining device includes an electric discharger applying electric power to the tool and the workpiece to process the workpiece, and a vibration generator applying a vibration to the tool or the workpiece using a first voltage generated between the tool and the workpiece during a time when the workpiece is processed.

An electrical discharge machining device for processing a workpiece by electrical discharges generated between a tool and the workpiece is provided. The electrical discharge machining device includes an electric discharger applying electric power to the tool and the workpiece to process the workpiece, and a vibration generator applying a vibration to the tool or the workpiece using a first voltage generated between the tool and the workpiece during a time when the workpiece is processed.