An electrode guide assembly for an EDM process includes a guide tube having a first end and a second end, a fluid feed portion, a fluid return portion, and an electrode. The guide tube has a set of at least two supporting protrusions, with the protrusions projecting radially inwardly from an inner diametral surface of the guide tube. The electrode is slidably accommodated within the guide tube, with an outer diametral surface of the electrode abutting against the set of supporting protrusions. The first end of the guide tube is in fluid communication with the second end of the guide tube to thereby provide a fluid feed channel, and the second end of the guide tube is in fluid communication with the first end of the guide tube to thereby provide a fluid return channel.

A method of manufacturing a punch, such as a socket punch, using wire EDM with at least six steps. The method involves forming a blank, holding the blank with an adapter, machining grooves in the blank, manufacturing a side relief of a working portion using wire EDM, milling the working portion to a final size, and forming a cone point on the end of the working portion. The method allows the punch to be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A method of manufacturing a punch, such as a socket punch, using wire EDM with at least six steps. The method involves forming a blank, holding the blank with an adapter, machining grooves in the blank, manufacturing a side relief of a working portion using wire EDM, milling the working portion to a final size, and forming a cone point on the end of the working portion. The method allows the punch to be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

An electrode guide assembly for an EDM process includes a guide tube having a first end and a second end, a fluid feed portion, a fluid return portion, and an electrode. The guide tube has a set of at least two supporting protrusions, with the protrusions projecting radially inwardly from an inner diametral surface of the guide tube. The electrode is slidably accommodated within the guide tube, with an outer diametral surface of the electrode abutting against the set of supporting protrusions. The first end of the guide tube is in fluid communication with the second end of the guide tube to thereby provide a fluid feed channel, and the second end of the guide tube is in fluid communication with the first end of the guide tube to thereby provide a fluid return channel.

A punch, such as a socket punch, with an angle on a portion of the punch and method of manufacturing a punch with an angle on a portion of the punch using wire EDM. A punch for a cold forming process includes a base portion adapted to be a structural backbone for the punch and a work portion extending from the base portion that performs a punching operation. In addition, grooves and a hex portion are formed in the working portion with an electric discharge machining (EDM) machine. Further, a cone point is machined on an end of the hex portion and a land area with an inwardly tapered angle formed between the hex portion and the cone point. The punch can be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A punch, such as a socket punch, with an angle on a portion of the punch and method of manufacturing a punch with an angle on a portion of the punch using wire EDM. A punch for a cold forming process includes a base portion adapted to be a structural backbone for the punch and a work portion extending from the base portion that performs a punching operation. In addition, grooves and a hex portion are formed in the working portion with an electric discharge machining (EDM) machine. Further, a cone point is machined on an end of the hex portion and a land area with an inwardly tapered angle formed between the hex portion and the cone point. The punch can be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A method of manufacturing a punch, such as a socket punch, using wire EDM with at least six steps. The method involves forming a blank, holding the blank with an adapter, machining grooves in the blank, manufacturing a side relief of a working portion using wire EDM, milling the working portion to a final size, and forming a cone point on the end of the working portion. The method allows the punch to be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A method of manufacturing a punch, such as a socket punch, using wire EDM with at least six steps. The method involves forming a blank, holding the blank with an adapter, machining grooves in the blank, manufacturing a side relief of a working portion using wire EDM, milling the working portion to a final size, and forming a cone point on the end of the working portion. The method allows the punch to be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A method and device for removing an electromagnetic core, the method including: using an electromagnet to magnetize or demagnetize a metallic upper nozzle when a magneto-conductive workpiece is cut off in a WEDM manner; attracting a core capable of being completely cut off and separated in the workpiece; utilizing the metallic upper nozzle to detect whether attracted; if the core is attracted, moving the core to a target area; demagnetizing and dropping the core in a trash area. The device is applied to a WEDM machine; after the metallic magneto-conductive upper nozzle is magnetized by the electromagnet, the upper nozzle is used to attract the magneto-conductive core; a metallic water spray cover is utilized to detect whether the core is attracted; the core is moved to the target area by a motion system of the WEDM machine, and dropped in a trash device after the upper nozzle is demagnetized.

A wire electric discharge machine for machining a workpiece includes a handling device for handling core pieces produced by the machine during the machining of the workpiece and upper and lower wire guiding heads moveable with respect to each other and with respect to the workpiece. The handling device includes a gripper mounted in a fixed or movable relation to the upper wire guiding head. The gripper moves so as to face a produced core piece with its gripper base. The gripper includes a fluid inlet where fluid flow under positive pressure enters the gripper and a fluid outlet at the gripper base where the fluid flow exits the gripper. An interior of the gripper guides the fluid flow, producing a low pressure region at the gripper base as the fluid flow exits, generating lifting force to remove the produced core piece from the workpiece by movement of the gripper.