Embodiments of the present disclosure provide a wire electric discharge machine (EDM) including a delivery system with one or combination of a wire electrode and a workpiece for delivering the wire electrode and the workpiece into proximity of each other and an energy source for creating electric discharge between the wire electrode and the workpiece. The wire EDM includes a wire electrode position measurement unit including light source to illuminate the wire electrode with encoded illumination pattern and a camera for acquiring a set of images of the wire electrode illuminated by the encoded illumination pattern. The wire EDM includes a processor to reconstruct positions of a segment of the wire electrode at a reconstruction rate greater than an acquisition rate of the camera by utilization of compressive sensing with sparse reconstruction technique and a controller to control the delivery system and the energy source based on the reconstructed positions.

A WEDM machine tool for machining a disc-shaped porous part, comprises a workbench, a central stand column, a rotary device, a plurality of wire rack assemblies and a wire feeding mechanism comprising a bottom plate, a wire rack arranged on the bottom plate and a radial driving mechanism for driving the wire rack to move in a radial direction on the bottom plate; and the wire rack is a [-shaped rack with an opening oriented to the central stand column; and the wire feeding mechanism comprises a first guide wheel assembly arranged on the workbench to guide an electrode wire into and out of a wire winding barrel, second guide wheel assemblies arranged on the radial driving mechanism and the wire rack, a third guide wheel assembly arranged on the central stand column and a fourth guide wheel assembly arranged between two wire rack assemblies.

A high-speed reciprocating wire cutting process in which a wire electrode is transported and precisely guided across a machining area by means of a wire traveling circuit, whereas the cutting process is conducted by repeatedly: (a) running the wire electrode in a first direction until a first reciprocation position, (b) stopping and inverting the traveling direction of the wire electrode, (c) running the wire electrode in a second direction until a second reciprocation position, and (d) stopping and inverting the traveling direction of the wire electrode.

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 method for forming a heat exchanger plate includes providing a precursor having a body with a first face and a second face opposite the first face and at least one internal passageway; and pluralities of first and second fin precursors respectively protruding from the first and second faces. First and second fin height profiles are formed by removing material from the respective fin precursors via wire electro-discharge machining.

CAM software creates a machining program that executes wire electrical discharge machining under appropriate machining conditions even when the actual arrangement state is unknown at the time of creating the machining program. The CAM software causes a computer to create a machining program for a wire electrical discharge machine to machine a workpiece. The computer is connected to a database that stores a correspondence between setting conditions of the wire electrical discharge machine and the workpiece, and machining conditions suitable for the setting conditions, and the computer performs a first procedure of selecting a plurality of different setting conditions, a second procedure of retrieving machining conditions corresponding to the selected setting conditions, from the database, and a third procedure of creating the machining program that designates one of the machining conditions retrieved in the second procedure, with respect to each of the setting conditions selected in the first procedure.

CAM software creates a machining program that executes wire electrical discharge machining under appropriate machining conditions even when the actual arrangement state is unknown at the time of creating the machining program. The CAM software causes a computer to create a machining program for a wire electrical discharge machine to machine a workpiece. The computer is connected to a database that stores a correspondence between setting conditions of the wire electrical discharge machine and the workpiece, and machining conditions suitable for the setting conditions, and the computer performs a first procedure of selecting a plurality of different setting conditions, a second procedure of retrieving machining conditions corresponding to the selected setting conditions, from the database, and a third procedure of creating the machining program that designates one of the machining conditions retrieved in the second procedure, with respect to each of the setting conditions selected in the first procedure.

A program generating apparatus includes a machining program generating unit configured to generate a machining program for controlling a wire electrical discharge machine so as to machine a workpiece in accordance with a machining shape of the workpiece input by a user and so as to fix a core which is produced when the workpiece is machined, to the workpiece. In the program generating apparatus, a core handling program generating unit generates a core handling program for controlling a robot so as to remove the core from the workpiece by applying an impact to the core in accordance with the input machining shape of the workpiece.

A program generating apparatus includes a machining program generating unit configured to generate a machining program for controlling a wire electrical discharge machine so as to machine a workpiece in accordance with a machining shape of the workpiece input by a user and so as to fix a core which is produced when the workpiece is machined, to the workpiece. In the program generating apparatus, a core handling program generating unit generates a core handling program for controlling a robot so as to remove the core from the workpiece by applying an impact to the core in accordance with the input machining shape of the workpiece.

A sear mechanism for a firearm includes a trigger element having one or more contact surfaces on which one or more movable or pivotable components of the sear mechanism selectively contacts or slides. In some embodiments, the trigger element is made by producing an intermediate workpiece of the trigger element by a manufacturing process, and electric discharge machining the intermediate workpiece of the trigger element to provide the contact surfaces.