Denso Corporation

Denso Corportion

Hideyuki Iiboshi

Takashi Shimizu

Masahiko Imoto

Tatsuya Watanabe

Hiromichi Morita

Shinichi Awano

Tetsuji Sanada

A metal wiring plate includes a soldering portion to which an electronic device is soldered and a wiring portion extending from the soldering portion and configured to electrically connect the electronic device to other device. The wiring portion includes a narrow portion located adjacent to the soldering portion. The width of the narrow portion is less than the width of the soldering portion so that the narrow portion helps prevent melted solder applied to the soldering portion from spreading to areas outside the soldering portion. The narrow portion allows the electronic apparatus to be surely soldered to the soldering portion without using solder resist.

Metal wiring plate

An electrode feeding apparatus for electric-discharge machining by discharging between an electrode and a workpiece in order to machine the workpiece includes an occurrence frequency detecting unit for detecting the occurrence frequency of short-circuit current flowing when the electrode contacts the workpiece and a penetration detecting unit for detecting penetration by the electrode to the workpiece based on the occurrence frequency. According to the present invention, it is possible to detect with high precision penetration by the electrode into the workpiece by utilizing the difference between an occurrence frequency of short-circuit current during electrode discharge machine and the occurrence frequency of the short-circuit current when the electrode has penetrated the workpiece.

Electrode feeding apparatus for electric-discharge machining

Growing community of inventors

Tokai, Japan

Hideyuki Iiboshi