Kawasaki Jukogyo Kabushiki Kaisha

Hideyuki Ogishi

Hayato Iwasaki

Hiroshi Kitano

Yoshihide Imamura

Yuto Sakane

Toshiro Tsuji

Yoshimoto Matsuda

Kohei Mikami

Yoshihiro Masuda

Hideki Kumamoto

Kazunori Hara

Hiroshi Tomomori

Taku Goda

Akiyoshi Mizuta

Aki Kodai

Kozo Isano

A spinning forming method includes a first forming step and a second forming step, in each of which a plate fixed to a main shaft is formed while being rotated. In the first forming step, a processing tool is brought into contact with a first main surface of the plate to form a first level-changing portion extending from the first main surface toward a second main surface. In the second forming step, the processing tool is brought into contact with the second main surface at an outer peripheral side of the first level-changing portion to form a second level-changing portion extending in an opposite direction to the first level-changing portion.

Spinning forming method and spinning forming apparatus

A spinning forming apparatus shapes a plate while rotating the plate around a rotational axis. The spinning forming apparatus includes: a holding member to which the plate is attached and which rotates the plate around the rotational axis; a processing tool configured to contact a first main surface of the plate to process and shape the plate; and a heater configured to heat the plate. The heater is arranged at the opposite side of the processing tool across the plate. The heater locally heats a position of a second main surface of the plate opposite to the first main surface, the position being located on a circumference around the rotational axis, the circumference being defined by a position, with which the processing tool contacts, of the plate.

Spinning forming apparatus and forming method

A spinning thickening forming method is a method of, while rotating a plate including a center portion fixed to a fixing jig, increasing a thickness of a peripheral portion of the plate. Specifically, while locally heating the peripheral portion of the plate such that at least a portion of the plate which is adjacent to the fixing jig maintains stiffness, a forming roller is pressed against the peripheral portion of the plate to compress the peripheral portion in at least a direction perpendicular to a thickness direction of the peripheral portion.

Spinning thickening forming method and spinning thickening forming apparatus

A swingarm assembly () for use in motorcycles for supporting a motorcycle rear wheel () includes left and right arms (L,R) and a connecting member () by which the left and right arms (L,R) are connected together. At least the arms (L,R) are products of magnesium alloy that are formed by an extrusion technique or a drawing technique.

Motorcycle swingarm assembly

A titanium alloy tappet that is slidable at a high speed is provided by covering shortcomings of lightweight and high-strength titanium alloy. A surfaceA of at least a slidable portion of the tappetfor use with a valve system is subjected to a carburizing process.

Titanium alloy tappet, manufacturing method thereof, and jig used in manufacturing tappet

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Akashi, Japan

Hideyuki Ogishi