A conductive electrode wire for use in an electric discharge machine (EDM) is provided, comprising a core wire comprised of one single metal or an alloy of multiple metals with a coating deposited by the electro-plasma process, wherein such coatings are alloys of zinc and nickel. A process for treating a surface of an electrically conductive workpiece, such as a core wire, is also provided.

A conductive electrode wire for use in an electric discharge machine (EDM) is provided, comprising a core wire comprised of one single metal or an alloy of multiple metals with a coating deposited by the electro-plasma process, wherein such coatings are alloys of zinc and nickel. A process for treating a surface of an electrically conductive workpiece, such as a core wire, is also provided.

An EDM machine includes a machine head, a wire guide, a machining wire extending from the wire guide to the machine head, a rotary table mounted to a first surface and a fixed table mounted to the rotary table, and a fixture mounted to the fixed table. The fixture includes a mounting portion substantially circumscribing the fixture. The mounting portion further includes a mounting surface. The mounting surface is closer to a first surface than an upper surface of the fixed table.

An EDM machine includes a machine head, a wire guide, a machining wire extending from the wire guide to the machine head, a rotary table mounted to a first surface and a fixed table mounted to the rotary table, and a fixture mounted to the fixed table. The fixture includes a mounting portion substantially circumscribing the fixture. The mounting portion further includes a mounting surface. The mounting surface is closer to a first surface than an upper surface of the fixed table.

An electrode wire for electrical discharge machining included: a core made of first metal; and an alloy layer which is formed at an outer circumference of the core due to inter-dispersion of the core and second metal with which an outer surface of the core is plated. The alloy layer includes a portion formed by α phase+β′ phase and β′ phase grains. The alloy layer has cracks formed at a surface thereof. According to such a configuration described above, there can be provided an electrode wire for electrical discharge machining which has an even surface, improves a machining speed and the surface roughness of a workpiece, and minimizes generation of fine debris of the electrode wire.

An electrode wire for electrical discharge machining included: a core made of first metal; and an alloy layer which is formed at an outer circumference of the core due to inter-dispersion of the core and second metal with which an outer surface of the core is plated. The alloy layer includes a portion formed by α phase+β′ phase and β′ phase grains. The alloy layer has cracks formed at a surface thereof. According to such a configuration described above, there can be provided an electrode wire for electrical discharge machining which has an even surface, improves a machining speed and the surface roughness of a workpiece, and minimizes generation of fine debris of the electrode wire.

An electrode wire includes a brass core, a Cu—Zn alloy layer coated on the brass core, and a surface layer. The surface layer includes CuO, ZnO, Cu.sub.2(OH).sub.2CO.sub.3, and a Cu—Zn intermetallic compound. The surface layer is in the shape of particles or sheets spaced apart on the Cu—Zn alloy layer; and the Cu—Zn alloy layer is exposed with respect to spaces between the particles or sheets.

An electrode wire includes a brass core, a Cu—Zn alloy layer coated on the brass core, and a surface layer. The surface layer includes CuO, ZnO, Cu.sub.2(OH).sub.2CO.sub.3, and a Cu—Zn intermetallic compound. The surface layer is in the shape of particles or sheets spaced apart on the Cu—Zn alloy layer; and the Cu—Zn alloy layer is exposed with respect to spaces between the particles or sheets.

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 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.