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.

A wire electrical discharge machine includes: a wire electrode cumulative moving time calculator for calculating a value correlated to a wire electrode cumulative moving time as a cumulative value of time for which a wire electrode has moved in each of multiple wire electrode moving regions which are defined by dividing a movable range of the wire electrode moving relative to a worktable; and a display control unit for displaying on a display unit the information on values correlated to the wire electrode cumulative moving time for respective wire electrode moving regions.

An electrochemical machining apparatus being capable of performing multiple points and multiple angles machining is provided. The electrochemical machining apparatus includes at least one electrode member, a guiding member and an actuation member. The electrode member includes a conductive end and a free end, wherein the electrode member is rigid and unbendable. The guiding member is for limiting and guiding the electrode member to move. The actuation member is for exerting a force to the free end of the electrode member, thereby enabling the conductive end of the electrode member to form angle variations. A force-exerting direction from the actuation member to the free end is parallel to a central axis of the electrode member or deflects off the central axis so as to form the angle variations.

A tool changer for electrical discharge machine tool, in particular for loading and unloading at least one tool electrode holder to be mounted in a chuck of the electrical discharge machine tool for machining a workpiece. The tool changer includes a base having a back wall and two side walls, wherein on each side wall a linear guide is provided horizontally; a holding plate coupled to the linear guide to allow the displacement of the holding plate on a horizontal plane on the linear guide in its longitudinal direction defined as extending direction; a plurality of forks for receiving the tool electrode holder mounted on the holding plate; a driving unit connected to the holding plate to enable the movement of the holding plate between a retracted position and an extending position, wherein in the retracted position the holding plate is positioned closely to the back wall and in the extending position the holding plate is moved away from the back wall, wherein the driving unit includes a first actuator and a second actuator, the longitudinal axis of each actuator being arranged at a defined angle to the extending direction of the tool changer.

A device for the electrochemical processing of a metal workpiece, including a plurality of electrodes that by way of respective linear drive units are movable in a linear manner relative to the workpiece from an initial position to a terminal position, the electrodes having a reproduction face that is directed toward the workpiece, wherein at least three electrodes are provided, the electrodes being disposed so as to be offset around the circumference of the workpiece and by way of the reproduction faces of the electrodes during the entire readjustment movement from the initial position to the terminal position engaging across one another in portions so as to be in contact, and by way of the reproduction faces of the electrodes delimiting a fluid duct that in a closed manner encircles the circumference of the workpiece.

A wire electrical discharge machine includes: a wire electrode cumulative moving time calculator for calculating a value correlated to a wire electrode cumulative moving time as a cumulative value of time for which a wire electrode has moved in each of multiple wire electrode moving regions which are defined by dividing a movable range of the wire electrode moving relative to a worktable; and a display control unit for displaying on a display unit the information on values correlated to the wire electrode cumulative moving time for respective wire electrode moving regions.

A wire electric discharge machine includes a machine learning device that learns an adjustment of an axis feed command of the wire electric discharge machine. The machine learning device determines an adjustment amount of the axis feed command by using data related to a movement state of an axis, and adjusts the axis feed command based on the determined adjustment amount of the axis feed command. Subsequently, the machine learning device performs machine learning of the adjustment of the axis feed command based on the determined adjustment amount of the axis feed command, the data related to the movement state of the axis, and a reward calculated based on the data related to the movement state of the axis.

A technique of removing material from metal parts referred to as OPECM and a corresponding OPECM processing machine are disclosed. A tool electrode is manufactured for removing material from a target workpiece, and the workpiece and tool electrode are fixed into a processing machine that imparts an oscillatory motion path or profile and applies a voltage through a flowing electrolyte solution. The disclosed technique and processing machine removes material from the surface of the target workpiece through proximal surface dissolution as the workpiece and tool electrode are brought within proximity of one another.

An electro-hydraulic joint supplying system for electrical machining and supporting automatic tool changing includes an electro-hydraulic joint supplying device and a clamping device. The electro-hydraulic joint supplying device includes an insulator, an electro-hydraulic joint supplying base, an electro-hydraulic joint supplying pipe terminal, and an electro-hydraulic joint supplying pipe. The base is fixedly connected with a spindle shell through the insulator. A working fluid pipe connector and a wiring post are arranged on the base; a terminal connector is in a snap-fit with a top end of the electro-hydraulic joint supplying pipe terminal. The pipe terminal communicates with a flushing fluid container in an electrical machining electrode shank through an electro-hydraulic joint supplying pipe. The clamping device includes a first clamping mechanism, a second clamping mechanism, and a cooperation mechanism fixedly connected with the first clamping mechanism or the second clamping mechanism to circumferentially limit the flushing fluid container.

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