Nippon Steel Sumitomo Metal Corporation

Nippon Steel Corporation

Taisho Pharmaceutical Co., Ltd.

Sankei Giken Kogyo Co., Ltd.

Kyocera Corporation

Bose Corporation

Yokogawa Electric Corporation

Konami Digital Entertainment Co., Ltd.

Nippon Steel & Sumikin Stainless Steel Corporation

Nippon Steel & Sumkin Stainless Steel Corporation

Shuji Yamamoto

Mitsuharu Yamagata

Yasuhiro Wada

Hiroshi Ohta

Kumi Abe

Yuko Araki

Xiang-Min Sun

Tsuyoshi Shibata

Masato Hayashi

Kazunari Sakagami

Akito Yasuhara

Yasushi Tsukano

Minoru Moriya

Masayuki Abe

Kengo Takeda

Takashi Aramaki

Takeshi Inoue

Shinichi Yamaguchi

Daisuke Sato

Junichi Hamada

Taketoshi Okubo

Takeshi Kawachi

Atsushi Omura

Yoshinori Sekiguchi

Toshio Tanoue

Atsushi Seto

Yoshihiro Arita

Dai Nozawa

Ippei Kondo

Hiroki Urabe

Toshiaki Shirai

Tadashi Komori

Naoto Ono

Naoki Ura

Fumio Fudanoki

Takeshi Kuwada

Hiroshi Kumagai

Takeshi Koami

Daisuke Wakasugi

Yoshihisa Shirasaki

Yuuichi Yosida

Yuri Amada

Atsuhisa Yakawa

Youichi Shimazaki

Naohiro Iizuka

Keiichiro Kurashige

Toshio Okabe

Umihiko Hoshino

Shin Suenaga

Yoshifumi Ohata

Mitsuhiro Fujinaga

A rotor is a magnet-embedded rotor incorporated in a traveling motor of a vehicle, and includes: a laminated core having steel sheets laminated to each other and a bonding layer for bonding the steel sheets adjacent to each other in a laminating direction; and a magnet embedded in the laminated core. When the rotor rotates at 11000 rpm, a maximum amount of displacement of an outer edge of the laminated core of the rotor in a radial direction is 0.1 mm or less.

Rotor, method for designing rotor, and method for producing rotor

A method of manufacturing a bright surface product comprises a step of performing electroless plating to form a first metal film on a base coat layer formed on a substrate, a step of performing electrolytic plating to form a second metal film thereon so that the bonding strength between each film of a multi-layered metal film comprising the first metal film and the second film is higher than the bonding strength between the base coat layer and the first metal layer, a step of integrally and discontinuously segmentalizing the multi-layered metal film with cracks to form an island-like metal film comprising a collection of fine multi-layered metal regions with island-like structures; and a step of forming a translucent top coat layer to cover the fine multi-layered metal regions of the island-like metal film and enter into the cracks to make contact with the base coat layer.

Method for manufacturing product with bright surface

A press forming method includes a first process of obtaining a pressing force applied to each portion of a tool by an workpiece material during press forming while independently driving the respective each portion of the tool divided into multiple portions and press forming the workpiece material, and a second process of adjusting at least one of an applied driving force, an applied driving speed, and an applied driving timing for each portion of the tool to cause a processing portion of the workpiece material in which the state approaching an overload state is detected based on the pressing force to flow to other processing portions of the workpiece material.

Press forming method and tool for press forming

A method of manufacturing a tooth-shaped component including a process of draw-forming a workpiece so as to obtain a cylindrical container, which has a bottom surface portion and a side surface portion; a diameter-reducing process of reducing the diameter of a particular part in which a tooth tip portion is to be formed in the side surface portion of the cylindrical container, so as to increase the thickness of a corner portion such that an external shape of the corner portion between the bottom surface portion and the side surface portion satisfies the following conditional expression (&#x394;R+&#x394;H)&#x2264;2t; and a tooth shape-forming process of forming the tooth tip portion in the particular part of the cylindrical container reduced in diameter in the diameter-reducing process, so as to obtain a tooth-shaped component which has the bottom surface portion, the side surface portion, and the tooth tip portion.

Method of manufacturing tooth-shaped component, and tooth-shaped component

A method of manufacturing a mechanical part of the present invention includes a first process of forming, by performing a folding processing to an end portion of the material, a portion to be processed having a structure, in which a plurality of layers respectively having a thickness corresponding to a plate thickness of a material overlap each other, in the material such that a plate thickness direction of the layer is orthogonal to a plate thickness direction of the material; and a second process of changing, by performing a forging processing to the portion to be processed, a shape of the portion to be processed to a target shape while press-welding the layers of the portion to be processed to each other by plastic deformation.

Method of manufacturing mechanical part and mechanical part

A method of increasing the thickness of a tube which increases a thickness of an end part of a tube without a burr being formed, comprising placing a tubebetween a dieand mandrelin the state with a space for increasing the thickness between a small diameter partof the mandreland a first end partof a tubeand between a large diameter hole partC of the dieand a second end partof the tube, using a first upsetting punchand a second upsetting punchto respectively process the first end partand the second end partof the tube, pulling out the mandrelfrom the tubein the state with the second upsetting punchconstraining the second end partof the tube, and using the first upsetting punchto push up the first end partof the tubeto take out the tubefrom the die

Method of increasing thickness of tube and increased thickness tube

A forming die includes: a lower forming die having a bottom part and a side wall part; an upper forming die that is movable toward the bottom part of the lower forming die along an axis parallel to the side wall part of the lower forming die; and a push-in die that is movable toward the bottom part of the lower forming die along the axis between the side wall part of the lower forming die and the upper forming die.

Forming die, and undercut forming method

A fuel tank for a vehicle is formed of a tank main body in which an upper tank and a lower tank are mutually joined to form a closed space in which fuel is housed, and a sub-tank fixed to a bottom surface part of the lower tank by spot welding, in which a plurality of rows of the spot welding are set along a longitudinal direction of the lower tank with an interval therebetween in a width direction of the sub-tank, at least one bead positioned between the rows of the spot welding and extending continuously along the longitudinal direction of the lower tank is formed on the bottom surface part of the lower tank, and a lower surface of the sub-tank has no portion that is not brought into contact with the bottom surface part of the lower tank except for the bead.

Fuel tank for vehicle

An object of the present invention is to provide an electromagnetic wave penetrative metal film having high mass productivity and an extremely low attenuation rate in the electromagnetic wave penetrated through, a manufacturing method of the electromagnetic wave penetrative metal film, and a radome for a vehicle-mounted radar devices using the electromagnetic wave penetrative metal file. To achieve the object, the present invention provides an electromagnetic wave penetrative metal film composed of more than 10000 of fine metal film pieces per unit area (1 mm) provided on a surface of a substrate through an electroless plating step, wherein fine metal film pieces adjacent to each other are electrically isolated, a manufacturing method of the electromagnetic wave penetrative metal film, and a radome for a vehicle-mounted radar devices using the electromagnetic wave penetrative metal film.

Electromagnetic wave penetrative metal film, manufacturing method of electromagnetic wave penetrative metal film, and radome for vehicle-mounted radar devices

While a compression part (B) in a bottom wall part of a cup-shaped workpiece (B) is compressed by an inner punch () and an inner die () and moved in a direction to get away from an intermediate die (), the inner die () is pushed toward the inner punch (); and a compression part (B) being an outer end portion in a radial direction of the workpiece (B) is compressed by an outer punch () and an outer die () and moved in an direction to approach the intermediate die (), to thereby suppress the workpiece (B) in the compression part (B) from material-flowing in a direction to get away from a central axis (), whereby thickness reduction processing of the compression part (B) and thickness increase processing of a vertical wall part (B) of the workpiece (B) sandwiched by an intermediate punch () and the inner die () and a vertical wall part (B) of the workpiece (B) sandwiched by the intermediate punch () and an outer die () are performed.

Press-forming method

A press-forming method includes: a step of forming a first cup-shaped workpiece (B); a step of moving an axial pressing punch () relatively to a die () to abut on a cup opening end (B) of a cup sidewall portion (B), and while constraining the cup opening end (B), moving a second-stage forming punch () relatively to the die () to insert the second-stage forming punch () into a second die hole portion (), and pushing a part of the first cup-shaped workpiece into the second die hole portion () through a second die shoulder portion (), to thereby reduce the cup sidewall portion (B) in diameter and thicken the cup sidewall portion (B); and a step of, in a state of the constraint of the cup opening end (B) by the axial pressing punch () being released, moving the second-stage forming punch () relatively to the die () and further pushing the first cup-shaped workpiece deeper in the second die hole portion (), to thereby form a second cup-shaped workpiece smaller in diameter than the first cup-shaped workpiece.

An inner punch (), an outer punch (), and a die () are disposed on the same center axis (). The outer punch () is disposed so as to be apart from the inner punch () in a radial direction perpendicular to the center axis () by a first space Swhich is larger than a plate thickness T of a cup longitudinal wall portion (A). Further, an inner peripheral surface of the outer punch () has, on its die () side, a punch shoulder R portion (A) widening as it goes toward the die (). A cup bottom portion (A) is sandwiched by the inner punch () and the die () while an outer peripheral surface of the inner punch () and an inner peripheral surface of the cup longitudinal wall portion (A) are apart from each other by a second space S, and drawing to radially reduce the cup longitudinal wall portion (A) is performed by pushing the cup longitudinal wall portion (A) toward the outer peripheral surface of the inner punch () by the outer punch () while making the outer punch () abut on the cup longitudinal wall portion (A) from the punch shoulder portion (A), whereby a surplus material is made to flow into a cup shoulder portion (A) to thicken the cup shoulder portion (A).

Press forming method

A press forming apparatus () consecutively carries out: a first step of pushing a flat plate-shaped workpiece into a die () by a forming punch (), to form the workpiece into a cup-shaped workpiece (B); a second step of making the cup-shaped workpiece (B) move relatively to a position where a space (S) is formed between a cup bottom part (B) and the forming punch () by a holding down member () abutting on an end part of a cup vertical wall part (B); and a third step of making a counter punch () approach the forming punch (), to push a cup bottom part (B) to a forming punch () side so that the cup bottom part (B) is compressed by the forming punch () and the counter punch (), making a material of the cup vertical wall part (B) flow to a cup shoulder part (B), thereby to thicken the cup shoulder part (B).

A press mold includes an inner punch (), an intermediate punch () disposed along an outer periphery of the inner punch () and having an intermediate punch inclined portion () at a leading end, an outer punch () disposed along an outer periphery of the intermediate punch (), and a die () having a die inclined portion () facing the intermediate punch inclined portion (), central axes () of all of which are coaxially disposed. While a bottom portion of a bottomed container () is constrained by the inner punch () and the die (), an end portion of the bottomed container () is pressed by the outer punch (), and the intermediate punch () is moved in a direction opposite a direction in which the outer punch () is pressed, whereby a bottomed container inclined portion () of the bottomed container () sandwiched by the intermediate punch inclined portion () and the die inclined portion () is thickened.

Press-work method and bottomed container

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Tokyo, Japan

Shuji Yamamoto