A fixture for drilling a hole in a superalloy turbine blade includes a mount to selectively hold a root of the superalloy turbine blade with the superalloy turbine blade extending from the mount. The fixture may also include an actuator to apply a force to elastically deform at least a portion of the superalloy turbine blade when held by the mount from a relaxed, initial position to an elastically deformed position, the at least a portion of the superalloy turbine blade having a curvature in the elastically deformed position not present in the relaxed, initial position. The fixture may also include a drill guide configured to guide a drilling element into the superalloy turbine blade in the elastically deformed position.

A measurement system is for measuring positions of a plurality of subjects by using an ultrasonic testing sensor. The measurement system includes an ideal arcuate waveform creation unit configured to create, for each of the subjects, an ideal arcuate waveform of a measurement result of the ultrasonic testing sensor based on machining position information on the subject; a measurement arcuate waveform creation unit configured to create a measurement arcuate waveform based on the measurement result; a position estimation unit configured to collate the ideal arcuate waveform and the measurement arcuate waveform with each other to estimate a position of the subject from the measurement arcuate waveform determined to correspond to any ideal arcuate waveform; and an antiphase waveform addition unit configured to add, to the measurement arcuate waveform, a waveform in antiphase to the measurement arcuate waveform with which the position of the subject has been estimated.

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.

The invention relates to the production of a device for holding one or more electrode(s) for electrical discharge machining, comprising a body (41) having a rectilinear portion (43a) in which at least one first duct (45) is provided for the passage of one or more electrode(s) (21). The body further has an integral curved portion (43b) in which (at least) one second curved dielectric fluid supply duct (47) is provided and in which is provided a curved extension (45b) of said at least one first duct. The curved extension and the second curved duct are made of ceramic, with an inner mean roughness of: Ra<2 m.

The invention relates to the production of a device for holding one or more electrode(s) for electrical discharge machining, comprising a body (41) having a rectilinear portion (43a) in which at least one first duct (45) is provided for the passage of one or more electrode(s) (21). The body further has an integral curved portion (43b) in which (at least) one second curved dielectric fluid supply duct (47) is provided and in which is provided a curved extension (45b) of said at least one first duct. The curved extension and the second curved duct are made of ceramic, with an inner mean roughness of: Ra<2 m.

The present disclosure provides an electrochemical machining apparatus including a pressurized tank, a cap, a stabilizing plate, a guiding element, and an electrode. The pressurizing tank has a top surface and a chamber, wherein the top surface is disposed with an opening and a limiting portion. The cap fits in the opening and is limited by the limiting portion to seal the pressurized tank. The stabilizing plate is spaced from the top surface or the cap by a distance. The guiding element penetrates the stabilizing plate to connect with the cap and provides a channel to the chamber. The electrode is guided by the guiding element and penetrates the chamber via the channel. When the electrode processes a workpiece in the chamber during an electrochemical machining operation, the cap takes a pressure generated during the electrochemical machining operation, and the stabilizing plate stabilizes the electrode and the guiding element.

The present disclosure provides an electrochemical machining apparatus including a pressurized tank, a cap, a stabilizing plate, a guiding element, and an electrode. The pressurizing tank has a top surface and a chamber, wherein the top surface is disposed with an opening and a limiting portion. The cap fits in the opening and is limited by the limiting portion to seal the pressurized tank. The stabilizing plate is spaced from the top surface or the cap by a distance. The guiding element penetrates the stabilizing plate to connect with the cap and provides a channel to the chamber. The electrode is guided by the guiding element and penetrates the chamber via the channel. When the electrode processes a workpiece in the chamber during an electrochemical machining operation, the cap takes a pressure generated during the electrochemical machining operation, and the stabilizing plate stabilizes the electrode and the guiding element.

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 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.