Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Denki K.k.

National Institute of Advanced Industrial Science and Technology

Sumitomo Light Metal Industries, Ltd.

Osaka Gas Company Limited

Japanese National Railways

Niterra Co., Ltd.

Toshio Suzuki

Takuji Magara

Takeshi Iwasaki

Masahiro Yamamoto

Yoshio Shibata

Masanobu Awano

Masato Banzai

Yoshinobu Fujishiro

Toshiaki Yamaguchi

Shiro Terai

Takeshi Yatomi

Akinari Ichiryu

Jun Akedo

Takashi Kinoshita

Osamu Yamazaki

Mitsuaki Echigo

Hisao Ohnishi

Hisashi Yamada

Kazuyuki Minami

Yoshikatsu Hayashi

Kyohei Manabe

Yoshiro Shikano

Shigeaki Naka

Yasuhiko Hosokawa

Kanji Katsuki

Yoshitaka Ohnishi

Naoki Yagi

Yuzuru Yonehata

Makoto Andoh

Kesao Kambara

Toshihiro Nagasaka

Toshinori Maeda

Katsuhiko Hirata

Toshio Amitani

Azusa Miura

Masami Kanayama

Akiyoshi Hattori

Masanori Kito

Realized are a high-performance electrochemical element and solid oxide fuel cell in which the contact properties between a dense and highly-gastight electrolyte layer and an electrode layer are improved while the treatment temperature during formation of the electrolyte layer is suppressed to a low temperature, and methods for producing the same. An electrochemical element includes an electrode layer, and an electrolyte layerarranged on the electrode layer, wherein the electrode layerhas a plurality of pores that are open on a face thereof in contact with the electrolyte layer, and the pores are filled with fine particles made of the same components as the electrolyte layer

Electrochemical element, solid oxide fuel cell, and methods for producing the same

The invention provides a porous support for integrating electrochemical reaction cells with high-density, having a plurality of through-holes, an electrochemical reaction cell stack and an electrochemical reaction system comprising the porous support for integrating electrochemical reaction cells with high-density, and the invention relates to a support for integrating electrochemical reaction cells with high-density, in which a plurality of through-holes provided in a porous support act as structural supports for electrochemical reaction cells, to an electrochemical reaction cell stack in which electrochemical reaction unit cells are integrated at a high density using the porous support, to an electrochemical reaction system comprising the electrochemical reaction cell stack, and to a manufacturing method thereof, and the present invention enables to provide a porous support for integrating electrochemical reaction cells with high-density, an electrochemical reaction cell stack and an electrochemical reaction system that can simultaneously realize a size reduction and higher-density integration of the electrochemical reaction cell stack as a unit cell integration product.

Porous support for electrochemical reaction cell high-density integration, and electrochemical reaction cell stack and electrochemical reaction system comprising the porous support for electrochemical reaction cell high-density integration

Tube electrochemical reactor bundle or stack, having a structure, in which a plurality of tube fuel cells, formed of a dense ion conductor (electrolyte) and cathode (air electrode) laminated to an anode (fuel electrode) material having a tube structure, are electrically connected by a thin metallic wire, and an electrochemical reactor system using them are provided.

Electrochemical reactor bundles, stacks, and electrochemical reactor systems consisting of these components

The present invention is an electrochemical reactor unit in which a plurality of electrochemical reactor cells constituted by a tube are housed in a porous material body having a heat releasing function and a current collecting function, these are electrically connected in series, and a fuel manifold is mounted to the connected electrochemical reactor cells; an electrochemical reactor module that comprises a plurality of the units which are arranged in fuel supply holes, and a structure supplying air directly to the entire electrochemical reactor module; and an electrochemical reaction system in which such an electrochemical reactor module is utilized.

Electrochemical reactor units and modules and systems composed of them

A broken wire electrode 3 of a wire electrode electric discharge machining device is automatically repaired at the wire breaking position. After the used portion is cut away, the wire electrode 3 is fed toward the work 1. Upon detection of contact of the wire electrode 3 with the work 1, the feeding of the wire electrode 3 is stopped. A predetermined amount of deflection is obtained when the feeding of the wire electrode 3 is stopped. The wire electrode 3 is then moved horizontally relative to the work 1 within a predetermined range, until the end of the wire electrode 3 eventually falls into the machined groove 14 and the wire electrode 3 comes out of contact with the work 1. Thereafter the feeding of the wire electrode 3 is resumed to span the wire electrode 3 across the feeding-side wire guide unit 4 and the receiving-side wire guide unit 5. The attitude of the wire electrode 3 within the machined groove 14 is constrained downward by the water jet 7 sucked into the machining liquid nozzle 27 via the suction pump 30.

Automatic broken wire repairing method for wire electric discharge

A wire electrical feeding device for an electrical discharge machine. Vibrator assemblies are utilized to feed the wire electrode through electrode guides of the electrical discharge machine. A first vibrator assembly vibrates through a locus which includes a component in the wire feeding direction. The wire electrode is selectively pressed against the first vibrator assembly when the first vibrator assembly is moving in a direction having a component in a wire feeding direction. In the alternative, a second vibrator assembly, which is coupled to the first, clamps the wire electrode when the first vibrator assembly is moving in a direction having a component in the wire feeding direction. The vibrator assembles may each be driven at different vibrational frequencies.

Wire electrode feeder for wirecut electrical discharge machine

In a wire cut electric discharge machining method, feeding units having wire electrode feeding mechanisms are provided for wire electrodes different in diameter, respectively. The feeding units are moved, one at a time, to a wire electrode feeding path by cylinders coupled detachably to thereto, respectively, whereby the wire electrodes different in diameter are automatically replaced with each other, and machining conditions are automatically selected according to the diameter of a wire electrode and a machining process which are to be used. Therefore, the workpiece can be machined with the wire electrode most suitable for the given machining configuration. Thus, the method is high in machining accuracy and in machining efficiency.

Wire cut electric discharge machining method

A machining solution filtration apparatus for a machining device which includes: a filter, a filter medium which is arranged separately from the filter and supplied continuously; a unit for supplying a contaminated machining solution to the filter medium; a unit for generating a difference in pressure between the upper surface and lower surface of the filter medium; a unit for returning a machining solution filtered via the pressure difference to a filtered solution vessel; a unit for selecting the filter to allow the machining solution to be filtered only thereby for a predetermined period of time; a unit for detecting the presence/absence and/or remaining amount of the filter medium; and a unit for controlling the speed of supplying the filter medium. Accordingly, the apparatus is not only simple in structure and efficient in filtration, but also capable of reducing its running cost by extending the life of the filter and improving utilization of the machining device by reducing the frequency of replacing the filter. It is also easy in maintenance and readily repairable in the event of an abnormality.

Contaminated solution filtration apparatus and machining solution

Wire electrode feeding device in wire cut electric discharge machine

A wire electrical discharge machining apparatus comprising a nozzle for a machining liquid for jetting the machining liquid from a jet hole, a surrounding member for intercepting the flow of the machining liquid jetted from the nozzle so as to prevent the machining liquid from flowing out to a portion other than the spark gap, and a holding device for holding the surrounding member so as to removably mount the surrounding member on the nozzle and so that the surrounding member does not slip off while mounted. The holding device facilitates both the operation of mounting and dismounting the surrounding member on and from the nozzle and replacement of the surrounding member. Since the surrounding member does not slip off while it is mounted, smooth preparation and working is enabled.

Wire electrical discharge machining apparatus

A machining-liquid injection nozzle unit for use in a traveling-wire EDM apparatus comprises a pair of nozzles disposed opposite to each other through a workpiece and serving to inject a machining liquid individually toward the workpiece while permitting insertion of a wire electrode therethrough in the axial direction thereof coincident with injection of the machining liquid, and a liquid screening member so shaped as to surround the axis of the wire electrode and attached to at least one of the nozzles. The liquid screening member has a low friction coefficient to the workpiece and serves to diminish the lateral force exerted on the fore end of the upper or lower nozzle due to its sliding motion, hence preventing deterioration of the machining precision. The nozzle unit further includes a piston connected to the liquid screening member and capable of producing a predetermined pressure toward the workpiece by the machining liquid in the nozzle. The piston presses the liquid screening member against the workpiece by the constant pressure despite its wear to consequently prevent leakage of the machining liquid while averting reduction of the machining speed.

Machining-liquid injection nozzle unit for traveling-wire EDM apparatus

Wire cut electrical discharge machine

A wire electrode supplying device in a wire cut electric discharge machining apparatus, which is capable of automatically supplying a wire electrode with accuracy during an automatic machining operation. In the wire electrode supplying device according to the present invention, an outside diameter of a pipe guide into which the wire electrode is inserted is changed stepwise, and its one end portion is made minimum in outside diameter so that the one end portion is allowed to be inserted into a machining start hole formed in a workpiece to be machined. Therefore, in machining a workpiece having a machining start hole small in diameter, the feeding of the wire electrode can be automatically, stably and accurately achieved.

Wire electrode supplying device for use in a wire cut electric discharge

A detecting unit for detecting when the wire electrode is released from a jet stream of a machining solution during the feeding of the wire electrode. Upon detection of the release of the wire electrode, the feeding of the wire electrode is suspended automatically to remove the deformed wire electrode.

In a machining device such as a wire cut electric discharge machine, an electrically conductive rubber member is attached to the machining solution jetting nozzle of its machining head in such a manner that, when the machining head abuts against the workpiece, the resistance of the rubber member is changed being compressed by the nozzle and the workpiece, and the change in resistance of the rubber member is detected to determine whether the change in resistance is normal or abnormal, thereby to detect the collision of the nozzle with the workpiece, whereby the machining head is protected from damage.

Wire cutting electric discharge machine with nozzle collision detection

Growing community of inventors

Aichi, Japan

Toshio Suzuki