Nissan Motor Company Limited

Renault S.a.s.

Yoshitaka Uehara

Toshikazu Nanbu

Minoru Ota

Kazuhiko Takashima

Kenji Miyamoto

Chika Yamamoto

Masayuki Inoue

Yoshiteru Yasuda

Mori Nagayama

Shigeyuki Nakagawa

Takahiro Kaito

Akio Hirose

Hirotaka Miwa

Yousuke Koizuka

Tokio Sakane

Yoshirou Noguchi

Kazuhito Takashima

Kentarou Yuge

Shota Yamazaki

Takashima Kazuhiko

In a coating evaluation device and a coating evaluation method, information on a coating is acquired. The information on a coating includes material information representing a material of a coating surface, and at least one of shape information representing a curved shape of the coating surface, and surface roughness information representing a surface roughness of the coating surface. An evaluation value that corresponds to a combination of the material information, the shape information, and the surface roughness information is estimated by using an evaluation model that outputs a brilliance evaluation value pertaining to the coating surface in response to an input including the material information, the shape information, and the surface roughness information.

Coating evaluation device and coating evaluation method

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

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

An apparatus for forming recesses on a circumferential surface that defines a cylindrical bore in a workpiece includes a tool holder disposed coaxially with the cylindrical bore; a form roller support retained on the tool holder; a form roller rotatably supported on the form roller support, the form roller including projections on an outer circumferential surface thereof which are configured to form the recesses on the circumferential surface that defines the cylindrical bore in the workpiece. A control assembly is configured to control the form roller support such that the form roller is allowed to be in press contact with the circumferential surface that defines the cylindrical bore in the workpiece at a press contact load of a predetermined value on the basis of a centrifugal force which is exerted on the form roller support and the form roller during rotation of the tool holder.

Apparatus for forming microscopic recesses on a cylindrical bore surface and method of forming the microscopic recesses on the cylindrical bore surface by using the apparatus

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 micro-concave portion machining method is provided for forming micro-concave portions on an inner circumferential surface of a cylindrical bore form in a workpiece. The micro-concave portion machining method includes performing mirror surface machining and subsequent plastic working on the inner circumferential surface. The plastic working on the inner circumferential surface forms a plurality of recesses with each of the recesses including a micro-concave portion.

Micro-concave portion machining method

An apparatus for forming microscopic recesses on a circumferential surface that defines a cylindrical bore in a workpiece, the apparatus including a form roller, a form roller drive driving the form roller to rotate about a rotation axis in an axially offset position in which the rotation axis is offset from a central axis of the cylindrical bore, an axial drive causing a relative axial movement of the workpiece and the form roller drive along the central axis of the cylindrical bore, and a rotary drive driving at least one of the workpiece and the form roller drive to rotate about the central axis of the cylindrical bore while keeping an outer peripheral surface of the form roller pressing against the circumferential surface that defines a cylindrical bore.

Growing community of inventors

Yokohama, Japan

Yoshitaka Uehara