Aisin Seiki Kabushiki Kaisha

Other

Yamaha Corporation

Mitsubishi Materials Corporation

Ykk Corporation

Teikoku Piston Ring Co., Ltd.

Masao Nakamura

Shin Takeda

Kiyoshi Takeuchi

Masami Ishii

Yuma Horio

Junichi Nagahora

Ryohei Yabuno

Masahiro Oguchi

Masato Otsuki

Toshihisa Terazawa

Mitsuhiro Ozawa

Toru Kohno

Tamio Nakano

A highly wear-resistant aluminum-based composite alloy has improved wear resistant itself and the wear amount of the opposed Fe-based material is decreased as compared with the conventional wear-resistant aluminum alloys. The inventive composite alloy has a structure that at least either a dispersing phase selected from the group consisting of hard fine particles or a solid-lubricant particles having average diameter of 10 um or less is dispersed in an aluminum-alloy matrix which contains quasi-crystals.

Highly wear-resistant aluminum-based composite alloy and wear-resistant

A pipe is bent by advancing the pipe through a guide and into a ring disposed just upstream of said guide in the direction of pipe movement. The ring with the leading end of the pipe therein is moved by a controller along a predetermined curve along which the pipe is to be bent.

Method and apparatus for forming a bent pipe

A device for converting a straight pipe having an annular cross-section defined between an inner diameter and an outer diameter into a bent pipe having a non-annular cross-section, and method for making the same are disclosed. The device includes a round, bar-shaped guide member having a first end portion and a second end portion which is spaced therefrom in the axial direction and for being mounted slidably with the straight pipe. A floating member is formed into a prismoid and connected to the second end of the round, bar-shaped guide member in a ball-and-socket joint. The prismoid includes a first end in the form of a small polygon whose maximum radial length is less than the inner diameter of the straight pipe, and a second end in the form of a large polygon similar to the small polygon in shape and spaced from the first end in the axial direction. The prismoid has trapezoid sides disposed between the first end and the second end in such a manner that a corner angle between two adjacent trapezoid sides decreases gradually away from the first end. A feeding device slides the straight pipe on the round, bar-shaped guide member toward the floating member so that the straight pipe is brought into engagement with the floating member, thereby establishing the non-annular cross-section of the straight pipe. Lastly, a bending device bends the resulting pipe by applying a force thereto.

Device and method for forming bent pipe of non-annular cross-section

A roll forming apparatus comprises a plurality of driving roll stands and a plurality of drivingless roll stands, wherein the drivingless roll forming stand comprises an upper and a lower roll units and side roll units arranged around a central through-hole of a plate member supported by a supporting post. Each of the roll forming stands is adapted for automatically positioning each of the rolls associated therewith to preset positions for bending operation. The plate member is rotatable about the axis of the central hole, and a transverse slide table fixedly mounting the supporting post is transversely movable to the axis. Molding laces for cars are roll formed by bending a strip during travelling through a series of these adjusted roll stands.

Roll forming apparatus

In a method of making a poly-V grooved pulley from a circular flat plate of sheet metal of a predetermined thickness, the central portion of the parent flat plate is pressed to form a cup-shaped blank integral with a circular flat peripheral flange of the same thickness as that of the parent flat plate, the cup-shaped blank having a predetermined thickness thinner than that of the parent flat plate. The cup-shaped blank is pressed to form a hub wall, and the circular flat peripheral flange is drawn to form a cylindrical pulley flange wall. At the final stage, the cylindrical pulley flange wall is formed in its exterior periphery with a plurality of V-shaped grooves for a poly-V belt.

Method of making poly-V grooved pulley

Growing community of inventors

Nagoya, Japan

Shin Takeda