Provided are a wire electric discharge machine, a correction device, and a correction method which accurately correct position information indicating the position of a supporting point of each of an upper guide and a lower guide. The correction device includes: a storage unit that stores the position information; an inclination control unit that causes a wire electrode to incline at a predetermined angle; a measurement unit that measures a relative movement amount from a state in which the lower guide and a measurement site are separated by a predetermined distance in a relative movement direction to a state in which the wire electrode inclined at the predetermined angle reaches the measurement site; and an information, correction unit that corrects the position information of the storage unit on the basis of the predetermined angle and the relative movement amount.

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.

The invention relates to a work station for electrochemically machining a workpiece, having a number of recesses, including a base structure; a module which is fastened to the base structure and is configured to electrochemically machine the workpiece. A workpiece holder is fastened to the base structure. The workpiece holder is movable relative to the base structure along a feed axis which is parallel to the axis of rotation of the module. The module includes an electrode carrier arrangement, which is coupled to the module base body so the electrode carrier arrangement can be rotated together with the module base body about the axis of rotation of the module. The electrode carrier arrangement has a carrier frame and an electrode frame, where at least one electrode is detachably fastened to the electrode frame.

The invention relates to a work station for electrochemically machining a workpiece, having a number of recesses, including a base structure; a module which is fastened to the base structure and is configured to electrochemically machine the workpiece. A workpiece holder is fastened to the base structure. The workpiece holder is movable relative to the base structure along a feed axis which is parallel to the axis of rotation of the module. The module includes an electrode carrier arrangement, which is coupled to the module base body so the electrode carrier arrangement can be rotated together with the module base body about the axis of rotation of the module. The electrode carrier arrangement has a carrier frame and an electrode frame, where at least one electrode is detachably fastened to the electrode frame.

The present invention relates to a method for the production of drill holes in difficult to machine materials, in which a removal of material takes place in order to produce a drill hole by electrochemical erosion of material by an electrode that is moved in the longitudinal direction of the drill hole being produced in the direction onto the material to be processed at a feed rate, wherein the drilling has at least two steps, wherein, in the first step, the electrochemical processing takes place, and wherein, in a second step, the further processing of the drill hole to the final diameter takes place by machining processing or by erosion or by an electrochemical processing.

The present invention relates to a method for the production of drill holes in difficult to machine materials, in which a removal of material takes place in order to produce a drill hole by electrochemical erosion of material by an electrode that is moved in the longitudinal direction of the drill hole being produced in the direction onto the material to be processed at a feed rate, wherein the drilling has at least two steps, wherein, in the first step, the electrochemical processing takes place, and wherein, in a second step, the further processing of the drill hole to the final diameter takes place by machining processing or by erosion or by an electrochemical processing.

Provided are an estimation method. and a control device for a wire electrical discharge machine, the method and device being for estimating the tension of a wire electrode on the basis of information obtained from a motor included in a feed mechanism of the wire electrode. A control device for a wire electrical discharge machine provided with a first motor and a second motor that induce rotation of a first roller and a second roller for feeding a wire electrode, the control device including: an acquisition unit that acquires a noise load and/or a torque command from one of the first motor and the second motor; a feed motor control unit that controls the first motor and the second motor so that the wire electrode is tensioned; and an estimation unit that estimates the tension on the basis of the noise load and/or the torque command for the time when the wire electrode is tensioned.

Provided are an estimation method. and a control device for a wire electrical discharge machine, the method and device being for estimating the tension of a wire electrode on the basis of information obtained from a motor included in a feed mechanism of the wire electrode. A control device for a wire electrical discharge machine provided with a first motor and a second motor that induce rotation of a first roller and a second roller for feeding a wire electrode, the control device including: an acquisition unit that acquires a noise load and/or a torque command from one of the first motor and the second motor; a feed motor control unit that controls the first motor and the second motor so that the wire electrode is tensioned; and an estimation unit that estimates the tension on the basis of the noise load and/or the torque command for the time when the wire electrode is tensioned.

A method for preprocessing data related to a tool electrode, which is applied in an EDM machine to manufacture a part comprises: generating an electrode model for the tool electrode based on the geometry of the part; generating the cavity shape model (volume of the part to erode), combining the electrode and cavity shape model, dividing the resulting model into a plurality of slices in a plurality of parallel planes, wherein at least one slice is composed of at least two sections, which are topologically disconnected; and generating for each slice a slice-geometry data, and generating an electrode-geometry data including the slice-geometry data.

A method of forming a gas turbine engine component including an airfoil and at least one shroud includes the steps of (1) machining a gas path surface of the at least one shroud utilizing a non-electrochemical machining (ECM) process, and (2) then utilizing ECM on at least the airfoil.