Nissan Motor Company Limited

Fujikikosan Corporation

Renault S.a.s.

Toshikazu Nanbu

Nobutaka Chiba

Jun Watanabe

Yoshiteru Yasuda

Yoshitaka Uehara

Kenji Miyamoto

Makoto Kano

Kenshi Ushijima

Shigeyuki Nakagawa

Masahiro Omata

Noriko Uchiyama

Kazuhiko Takashima

Hirotaka Miwa

Chika Yamamoto

Hiroo Ueda

Minoru Oota

Manabu Wakuta

Takeshi Yamamoto

Masayuki Inoue

Toshikazu Oshidari

Tsuyoshi Nakamura

Sadayuki Nakamura

Nobuo Kino

Minoru Ota

Keizo Otani

Makoto Kanou

Akio Hirose

Toshimitsu Kimura

Makoto Yoshida

Yousuke Koizuka

Tokio Sakane

Hidenori Watanabe

Yoshirou Noguchi

Takurou Yamaguchi

Kazunori Sakata

Kouji Tagomori

Naoki Sugiyama

Yousuke Koiduka

Yoshiteru Shiburizukanazawa 2-303 Yasuda

An incremental forming tool of the present invention includes a holding portion attached to an incremental forming apparatus and a free curved surface part for pressing a metal plate. The free curved surface part is made of at least a hard metal base material and a surface of the free curved surface part is covered with a hard film. The surface of the hard film has an Rpk of 0.15 &#x3bc;m or less, the Rpk is defined by JIS B 0671 and is calculated from a material ratio curve of a roughness curve, and has an Ra of 0.2 &#x3bc;m or less, the Ra is defined by JIS B 0601 and is calculated from a roughness curve. Therefore, a molded product having a smooth worked surface with no roughness can be produced without adding any extra equipment for preventing adhesion.

Sequential molding tool

The present invention is a sliding contact member, including a powder compact portion that contains an electrically conductive diamond and an electrically conductive binder, and is provided at least on a sliding contact surface of either or both of two sliding contact members slidably in contact with each other. The sliding contact members are applied to DC motors, generators and the like.

Sliding contact member, and DC motor and generator using said sliding contact member

An inexpensive bonding method is provided to bond materials constituted of an aluminum-based metal to each other at a low temperature and a low pressure while inhibiting deformation, without requiring the use of a flux and minimizing the influence on the base materials and the periphery. Also provided are various bonded parts obtained by the bonding method. An insert material comprising Zn as an element that undergoes a eutectic reaction with Al is interposed between two materials constituted of an aluminum-based metal. The two materials are heated, while being pressed against each other, to a temperature at which the eutectic reaction takes place, thereby generating, at the bonding interface between the two materials, a melt due to the eutectic reaction with some of the Al contained in the base materials and discharging the Al oxide films from the bonding interface together with the melt. Thus, the two materials are bonded.

Method for bonding aluminum-based metals

A high durability roller, a manufacturing method thereof and a power transmission device with the high durability roller are provided. The roller for a power transmission device that comprises a plurality of rollers in contact with each other directly or with lubricant between them, includes: a metal base having a Young's modulus of 220 GPa or less; and a coating that is formed on a surface of the metal base, includes hard particles and a metal component composed of at least either simple metal or alloy, and has a Young's modulus of 250 GPa or more. The power transmission device includes the roller. The method of manufacturing the roller includes: forming the coating on the surface of the metal base by thermal spraying using a thermal spray material that comprises the hard particles and the metal component composed of at least either simple metal or alloy.

Rolling body, method for producing rolling body, and dynamic force transmission device

In joining members to be joined () by heating the members to be joined () that are mated with intervening an insert () while applying opposing loads to the members to be joined (), so as to allow eutectic reaction to occur between the members to be joined () and the insert () to discharge a eutectic melt from a joining plane along with an oxide film () of the members to be joined, the members to be joined () are brought into contact with the insert () so that the oxide film () is broken by a stress concentrating means previously provided at least one of joining portions breaks to produce a starting point of the eutectic reaction.

Joining method and joining component

A method for joining metal materials, which joins a first member with at least a joining face made of Metal A, the Metal A being mainly composed of at least one selected from the group consisting of Al, Cu, Ag and Au, to a second member with at least a joining face made of Metal B, the Metal B being mainly composed of at least one selected from the group consisting of Al Cu, Ag and Au, includes interposing an insert between the joining faces of the first and second members, wherein the insert contains Zn as a metal capable of causing an eutectic reaction with at least one metal except for Au in Metal A as well as at least one metal except for Au in Metal B.

Method for joining metal materials

There is provided a low-friction sliding member having a sliding surface slidable relative to an opposing member via an oil, wherein the sliding surface has a plurality of texture groups, each of the texture groups consists of at least two adjacent fine recesses having portions aligned to each other in either a sliding direction or oil flow direction; a distance between the texture groups is larger than a distance between the adjacent recesses; and the texture groups is distributed uniformly over the sliding surface.

Low-friction slide member, production apparatus therefor and process for producing the same

A sliding device is comprised of a first sliding member which is rotatable on an axis of the first sliding member, a second sliding member which slidably supports the first member through viscous fluid and at least a pit which is formed on a surface of at least one of the first and second sliding members so as to promote a viscous fluid flow, which has a component of a rotational direction of the shaft when the first member is rotated.

Sliding device

A rotary assembly for traction drives, including a plurality of rolling elements having a rotation axis and traction contact surfaces around the rotation axis and associating with each other to transmit a motive power between the rolling elements via a traction oil film formed between the traction contact surfaces, in which at least one of the traction contact surfaces has a microstructure with irregularities which sizes are larger than a thickness of the traction oil film. The process for the traction contact surface is also disclosed.

Traction drive rotary assembly and process for producing rolling element thereof

A traction drive rotary assembly including a plurality of rolling elements having traction contact surfaces associating with each other to transmit power between the rolling elements. At least one of the traction contact surfaces has a surface microstructure including grooves and protrusions alternately arranged. The surface microstructure is represented by an unfiltered primary profile curve including recesses and projections corresponding to the grooves and the protrusions. Each projection includes a portion located higher than a center line of the unfiltered primary profile curve and having a shape selected from a generally trapezoidal shape with rounded corners, a generally crowning shape, a generally elliptic arc shape, a generally sinusoidal shape and a generally triangular shape with a rounded apex. A ratio &lgr;/AMP of a wavelength &lgr; of the unfiltered primary profile curve to a half depth AMP of the recess is in a range of 50-400.

Traction drive rotary assembly

A high bearing pressure-resistant member used as a rolling element forming part of a toroidal continuously variable transmission for an automotive vehicle. The high bearing pressure-resistant member is formed of a mechanical structural steel containing Cr. The mechanical structural steel includes a matrix having at least one of martensite structure and bainite structure. The matrix contains carbide having a mean particle size of 3 &mgr;m or less, dispersed and precipitated in form of at least one of generally spheres and pseudo-spheres.

High bearing pressure-resistant member

A toroidal continuously variable transmission including input and output disks having a common first rotation axis about which the disks are rotatable, and a power roller swingably interposed between the disks and having a second rotation axis intersecting the first rotation axis, about which the power roller is rotatable. The input and output disks and the power roller have traction surfaces cooperating with each other to transmit rotation therebetween. At least one of the input and output disks and the power roller has a surface roughness on the traction surface thereof which varies in a direction of the rotation axis thereof.

Toroidal continuously variable transmission

A toroidal-type continuously variable transmission (CVT), including rolling elements having traction surfaces cooperating with each other to transmit a power between the rolling elements via a traction oil film formed between the traction surfaces. The traction surfaces have the microstructure that is defined with respect to a thickness of the traction oil film formed when the temperature of the traction portion of the traction surface is high, to thereby exhibit high traction coefficient even in the high-temperature operating condition.

Toroidal-type continuously variable transmission for automobiles

A toroidal continuously variable transmission is provided with a power roller,which is gripped between input/output disks,arranged on the same axis, a cam flange,which is disposed on the same axis as the input disk,and is connected to an input shaft,, and cam rollers,which are gripped between the cam flange,and the rear face of the input disk,. Bearings,are interposed in the contact position on the long radius end face,of the cam roller,and the inner circumference of the retainer,. These bearings allow the reduction of frictional resistance on the contact point of the cam roller,and the retainer,and improve the torque transmission capacity and component lifespan of the toroidal continuously variable transmission.

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Yokohama, Japan

Toshikazu Nanbu