Abstract:
A method is provided comprising identifying an alignment point of a workpiece; positioning a first end of an electrode in the direction of the alignment point of the workpiece; applying a first voltage to the electrode wherein the applied first voltage generates a spark; rotating the electrode in a first direction; advancing the electrode toward the alignment point by a first distance wherein advancing the electrode and applying the first voltage creates a first orifice section; applying a second voltage to the electrode and modifying one or more operational parameters of the electrode; advancing the electrode toward the alignment point by a second distance wherein advancing the electrode and applying the second voltage causes formation of at least a second orifice section; wherein the first and second orifice sections cooperate to form an orifice comprising a first flow area and a second flow area.
Abstract:
An electrochemical machining tool (3) includes a tool body (10) which has an electrode (11) which is made of a flexible conductive material having a cylindrical shape extending along an axis (O), and inside which an electrolyte (W) flows toward a leading end (10a) side, and an insulating layer (12) coated on an outer circumferential surface of the electrode (11) to expose a leading end surface of the electrode (11), wherein a non-insulation section (15) which exposes the outer circumferential surface of the electrode (11) is formed on the tool body (11), and the non-insulation section (15) is surrounded by the insulating layer (12) from an axial (O) direction.
Abstract:
The present invention is an electrochemical machining tool equipped with a tool body that comprises: an electrode that extends along an axial line and inside which a flow channel through which an electrolytic solution flows towards the tip end is formed; an insulating layer covering the outer circumferential surface of the electrode so as to expose the tip end face of the electrode; and a flow channel-partitioning part for partitioning the flow channel into a first flow channel containing the axial line and a second flow channel positioned on the outer circumferential side of the first flow channel. The electrochemical machining tool has a configuration in which a fluid outflow section for directing electrolytic solution, which is flowing through the second flow channel, outward in the radial direction of the tool body is formed on a portion of the circumference of the tool body.
Abstract:
A drilling tool for use in machining a conductive work piece is provided. The tool includes a forward electrode tip that includes an outer radial portion and an inner radial portion that extends from a forward face of the outer radial portion. The tool also includes a dielectric sheath that extends circumferentially about the outer radial portion, and at least one side electrode coupled to the dielectric sheath. When electric current is supplied to the forward electrode tip and the at least one side electrode, material adjacent to the forward electrode tip and the at least one side electrode is removed from the conductive work piece. The forward electrode tip and the at least one side electrode are selectively operable to form a bore hole having a variable geometry that extends through the conductive work piece when the material is removed therefrom.
Abstract:
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.
Abstract:
Provided is an electrochemical machining apparatus, which includes an electrode (3) that form of a shape which a tube shape is extended, including a flexible conductive material, and is which an electrolyte (W) circulates from a base end side (3b) thereof toward a distal end side (3a) thereof, a current supply unit (6) that causes electric current to flow with respect to the electrode (3) in an extending direction (direction running the Y direction) in which the electrode (3) extends, and a magnetic field generation unit (7) that includes at least one pair of magnets (9) which are disposed to face the electrodes (3) a direction and apply a magnetic field in a direction (X direction) intersecting the extending direction with respect to the electrodes (3).
Abstract:
The invention relates to a method and device for obtaining a determined flow resistance of a flow channel, especially an opening in a component. The method involves the following steps: a liquid flows through the flow channel; a characteristic depending on the flow resistance of the flow channel in the component is determined; and the flow channel is machined by means of a working method until said characteristic reaches a pre-determined nominal value.
Abstract:
The invention relates to a method and device for obtaining a determined flow resistance of a flow channel, especially an opening in a component. The method involves the following steps: a liquid flows through the flow channel; a characteristic depending on the flow resistance of the flow channel in the component is determined; and the flow channel is machined by means of a working method until said characteristic reaches a pre-determined nominal value.
Abstract:
Non-circular holes are formed by electrochemical machining with an electrode that includes a hollow shank having a circular cross-section and a hollow tip section having a non-circular cross-section disposed on one end of the shank. The tip section is very small in length relative to the shank such that the shank comprises a large majority of the electrode's overall length. Because the majority of the electrode is circular in cross-section, it is relatively easy to straighten the electrode prior to a machining operation and to keep it straight during the operation, thereby overcoming problems experienced with full-length, non-circular electrodes. The circular shank also avoids electrolyte pressure imbalances eases the difficulty and high cost of manufacturing electrodes capable of forming non-circular holes.
Abstract:
An electrode of an EDM drill is aligned in at least two planes by positioning the electrode at a plurality of positions and determining the distances between the rotary center of the EDM drill and a plurality of points on the workpiece surface co-linear with the longitudinal axis of the electrode. By comparing these distances, it can be ascertained whether the electrode is aligned with the workpiece surface in a given plane. If the electrode is not aligned, an angle of rotation needed to align the electrode with the workpiece surface can be determined empirically.