Honda Giken Kogyo Kabushiki Kaisha

Akitaka Inao

Toshihiko Saga

Hisao Hirono

Tsuyoshi Makita

A method of and an apparatus for remelting and hardening an elongate workpiece such as a shaft having a plurality of axially spaced shaft portions to be processed. The shaft is held in a second position, heated, and thereafter transferred to a first position close and parallel to the second position. The shaft is then held in the first position, and the outer surface of one of the shaft portions is remelted and hardened with a torch. Thereafter, the torch is moved parallel to the shaft to remelt and harden the adjacent shaft portions successively. An apparatus for carrying out the method includes a device for holding the shaft in the second position, a preheating device for heating the shaft, a device for holding the shaft in the first position, a device for rotating the shaft about its own axis, a torch for remelting and hardening the outer surfaces of the shaft portions, and a torch moving device for moving the torch axially along the shaft successively into facing relation to the outer surfaces of the shaft portions.

Method of and apparatus for remelting and hardening a shaft

A method of and an apparatus for supplying a powdery material to a workpiece to be processed thereby. According to the method, the powdery material is discharged from a hopper and metered, and then fed into a tube extending in the vicinity of the workpiece. Ultrasonic vibrations are imparted to the tube to supply the powdery material to a portion to be processed of the workpiece while the amount of the supplied powdery material is being detected. The apparatus includes a hopper for storing the powdery material, the hopper having an outlet, a tube extending from the outlet to a position adjacent to the workpiece for conveying the powdery material therethrough, and an ultrasonic vibrating device mounted on the tube for imparting ultrasonic vibrations to the tube, and a device mounted on the tube for detecting the amount of the powdery material supplied through the tube.

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Saitama, Japan

Akitaka Inao