Honda Motor Co., Ltd.

Akinori Higuchi

Katsuyuki Nakajima

Akihiro Nemoto

Kazushige Nakatsuka

Seiichi Sasaki

Satoru Saito

Satoshi Matsuura

Kanomi Hayashi

Tomohiro Tsuchiya

Nobuyuki Kouda

Eiji Masuda

A cylindrical workpiece cutting apparatus is provided with a holder in which a metal made cylindrical workpiece is mounted on an outer periphery of the holder and which is adapted to hold the workpiece over an entire length of the workpiece; annular recesses formed on the outer periphery of the holder at a predetermined interval; a laser outputting part provided at a position opposed to the holder and adapted to output laser beam to the workpiece; and a cover portion provided on surfaces of the annular recesses and adapted to prevent attachment of metal particles which are scattered during cutting the workpiece by the laser beam.

Cylindrical workpiece cutting apparatus

Provided is a metal ring manufacture method and a metal ring metal device capable of manufacturing a plurality of metal rings at good efficiency without damaging the metal rings. The metal rings (R) are detached from a drum retaining unit () by a metal ring holding unit () with the arrangement state thereof being maintained; thereafter, each metal ring (R) clamped in the arrangement state by a pair of fingers () of a metal ring clamping unit () is delivered sequentially in the arrangement direction by a ring delivering unit disposed in the second finger ().

Metal ring manufacture method and metal ring manufacture device

A molten metal is fed from a distributor provided in a molten metal introduction portion of a casting die to a cavity of the casting die so as to perform a casting operation. A portion of the distributor to be in contact with the molten metal is made of a copper or a copper alloy. The casting is performed while setting a cavity temperature of the casting die in an initial stage of casting to a predetermined temperature and setting a temperature of the distributor in the initial stage of casting to 65&#xb0; C. or lower.

Casting method

Growing community of inventors

Tochigi, Japan

Akinori Higuchi