A method for restoring a blade or vane platform of a gas turbine assembly configured for a power plant by: providing a blade or a vane having a platform with an edge deterioration zone; removing the deterioration zone electro discharging machining technology; and rebuilding a removed zone by additive manufacturing technology. The removing can be performed to create a recessed plane along a platform edge, the recessed plane being connected to a platform plane by an enter inclined plane and an exit inclined plane arranged opposed along the platform edge.

An electric discharge machining apparatus includes a tool electrode that performs electric discharge machining to a workpiece, a tubular extended guide in which the tool electrode is inserted, a long nozzle in which the tool electrode is inserted with a tip protruded, and provided along an outer wall surface of the extended guide so as to provide mist generating space between the extended guide and the long nozzle, a compressed gas supplying device supplying compressed gas into the mist generating space, and a pressurized working fluid supplying device supplying pressurized working fluid into working fluid filling space between the tool electrode and the extended guide

An electric discharge machining apparatus includes a tool electrode that performs electric discharge machining to a workpiece, a housing in which the tool electrode is inserted, a compressed gas supplying device for supplying compressed gas into a mist generating region which is provided between an inner wall of the housing and the tool electrode, a first flow path through which the compressed gas flows and connecting the compressed gas supplying device with the mist generating region, a pressurized working fluid supplying device for supplying pressurized working fluid into the mist generating region, and a second flow path through which the pressurized working fluid flows and connecting the pressurized working fluid supplying device with the mist generating region.

A machining condition adjustment device includes a simulation unit that performs a simulation of a wire electric discharge machine based on a predetermined machining content, a required specification, and a predetermined machining condition, an update unit that updates a calculation model of the simulation unit, and a calculation unit that calculates a machining state in the simulation. In a predetermined machining state, a model obtained by learning, by machine learning, an adjustment action of the machining state suitable for bringing the machining state close to a reference value of the machining state under the reference condition is stored, an adjustment action of a machining state using the stored model is predicted, and a machining condition to be used for simulation processing is adjusted based on the prediction.

A machining condition adjustment device includes a simulation unit that performs a simulation of a wire electric discharge machine based on a predetermined machining content, a required specification, and a predetermined machining condition, an update unit that updates a calculation model of the simulation unit, and a calculation unit that calculates a machining state in the simulation. In a predetermined machining state, a model obtained by learning, by machine learning, an adjustment action of the machining state suitable for bringing the machining state close to a reference value of the machining state under the reference condition is stored, an adjustment action of a machining state using the stored model is predicted, and a machining condition to be used for simulation processing is adjusted based on the prediction.

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.

A draining mechanism according to an embodiment comprises a block in which a through hole is formed therethrough along a direction intersecting the gravity direction. The through hole is provided with a first guide portion and a second guide portion. The block comprises: a gas channel connected to the through hole between the first guide portion and the second guide portion; and a discharge port connected to the through hole between the first guide portion and the second guide portion, extending along the gravity direction, and connected to the outside of the block.

A draining mechanism according to an embodiment comprises a block in which a through hole is formed therethrough along a direction intersecting the gravity direction. The through hole is provided with a first guide portion and a second guide portion. The block comprises: a gas channel connected to the through hole between the first guide portion and the second guide portion; and a discharge port connected to the through hole between the first guide portion and the second guide portion, extending along the gravity direction, and connected to the outside of the block.

A program editing device edits a machining program in which a machining path along which a wire electrode of a wire electrical discharge machine machines a workpiece is defined. The machining program includes a plurality of blocks corresponding to respective multiple partial paths into which the machining path is divided, each of the blocks including path information indicating the corresponding partial path. The program editing device includes an analyzer analyzing the machining program and thereby identifying a predetermined shape pattern formed by a series of the multiple partial paths in the machining path, an information generator generating shape information corresponding to the identified predetermined shape pattern, and an editor inserting the shape information into the machining program.