The disclosure describes a method for manufacturing a pulsed electrochemical machining (pECM) tool that includes forming an electrode on a surface of a support substrate. The support substrate includes an electrically non-conductive material. The electrode includes one or more layers of an electrically conductive material and defines a working surface configured to face a workpiece.

The disclosure describes a method for manufacturing a pulsed electrochemical machining (pECM) tool that includes forming an electrode on a surface of a support substrate. The support substrate includes an electrically non-conductive material. The electrode includes one or more layers of an electrically conductive material and defines a working surface configured to face a workpiece.

Various embodiments include a device for the selective electrochemical machining of workpieces comprising: a machining head equipped with an electrolyte transmitter; and a supply channel for an electrolyte. The electrolyte transmitter is arranged in an interior of the supply channel and protrudes through an outlet opening of the supply channel to form a machining surface for the workpiece. The electrolyte transmitter comprises a cylinder arranged movably in the supply channel axially displaceable in the outlet opening.

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.

Provided is an electrode capable of increasing a degree of freedom in machining shape with a simple structure, an electrochemical machining apparatus using the electrode, an electrochemical machining method, and a product machined by the method. An electrode 4 has a core tube 41 formed of a material by which a second hole 101b having a direction or a curvature different from that of a first hole 101a having a predetermined curvature can be formed continuously from the first hole 101a and a coating 42 fixed to an outer periphery of the core tube 41.

Provided is an electrode capable of increasing a degree of freedom in machining shape with a simple structure, an electrochemical machining apparatus using the electrode, an electrochemical machining method, and a product machined by the method. An electrode 4 has a core tube 41 formed of a material by which a second hole 101b having a direction or a curvature different from that of a first hole 101a having a predetermined curvature can be formed continuously from the first hole 101a and a coating 42 fixed to an outer periphery of the core tube 41.

An apparatus for electrochemical machining gear outline and the alignment structure thereof is disclosed, the apparatus comprises first and second alignment members. The first and second alignment members include a plurality of first alignment teeth and second alignment teeth, respectively. Recessing a gear-outline edge of the first alignment teeth by a distance and extending a gear-outline edge of the second alignment teeth by the distance for against to each other to align the first and second alignment members. A cathode electrode includes a plurality of machining teeth with both gear-outline edges recessed by the distance for against the gear-outline edge of the second alignment teeth with the extended distance to align machining teeth. Thereby, before trimming the gear-outline of a workpiece, the machining gap between the machining teeth and the teeth of the workpiece can be aligned first.

An apparatus for electrochemical machining gear outline and the alignment structure thereof is disclosed, the apparatus comprises first and second alignment members. The first and second alignment members include a plurality of first alignment teeth and second alignment teeth, respectively. Recessing a gear-outline edge of the first alignment teeth by a distance and extending a gear-outline edge of the second alignment teeth by the distance for against to each other to align the first and second alignment members. A cathode electrode includes a plurality of machining teeth with both gear-outline edges recessed by the distance for against the gear-outline edge of the second alignment teeth with the extended distance to align machining teeth. Thereby, before trimming the gear-outline of a workpiece, the machining gap between the machining teeth and the teeth of the workpiece can be aligned first.

Provided is an electrode capable of increasing a degree of freedom in machining shape with a simple structure, an electrochemical machining apparatus using the electrode, an electrochemical machining method, and a product machined by the method. An electrode 4 has a core tube 41 formed of a material by which a second hole 101b having a direction or a curvature different from that of a first hole 101a having a predetermined curvature can be formed continuously from the first hole 101a and a coating 42 fixed to an outer periphery of the core tube 41.