Oki Electric Cable Co., Ltd.

Mitsuba Corporation

Isao Izui

Takashi Suzuki

Nobuyuki Washio

Keiji Takahashi

Yoichiro Kimoto

Koichi Hashizume

Masakazu Yoshimoto

Tetsuo Imamura

Takaharu Shimamune, Deceased

Yasomi Tojima

Hiroshi Sato

Nobutaka Fujioka

A wire material having a copper-zinc alloy layer, which is formed by action of thermal diffusion, and a zinc layer on its circumference surface is subjected to processes, including from a step of drawing the wire material to a step of reducing the diameter of the product, to reliably crash the copper-zinc alloy layer into particles. The particles are embedded in the circumference surface of a core to integrate the diffusion alloy layer and zinc layer with the core and prevent the diffusion alloy layer and zinc layer from falling off from the core. In addition, in order to cover cracks formed in the copper-zinc alloy layer during wire drawing with a zinc thin film, wire drawing is performed at temperatures appropriate for maintaining good malleability and ductility of zinc.

Electrode wire for wire electrical discharge machining, method for manufacturing the same, and method for electrical discharge machining using the same

A composite cable with built-in signal an power cables is mainly used as a control cable for a machine tool and the like. The composite cable contributes to reduced cost, downsizing, higher reliability and higher safety, which are obtained because only a single cable needs to be laid, instead of the conventional cable, which requires multiple cables to be laid. In the composite cable with the built-in signal and power cables, a flat signal cable formed by a plurality of insulating cores arranged in parallel in the lengthwise direction, and having alternately repeated combined portions and separate portions is spirally wound into a roll around one or more power cables provided in the center of the composite cable. The power cables each have a large conductor size. A first shield is optionally provided around the flat signal cable. A second shield is optionally provided around the power cables. A sheath is provided around the flat signal cable or the first shield.

Composite cable with built-in signal and power cables

Growing community of inventors

Chino, Japan

Isao Izui