Mitsubishi Jukogyo Kabushiki Kaisha

Yukitsugu Kobayashi

Mokuji Koizumi

Nobutaka Maeda

Hidehiko Tsukamoto

Apparatus suitable for adjusting the phase between the roll dies in a cross rolling machine, the apparatus comprising a die roll mounted on a roll shaft for rotation by the roll shaft, a boss fixedly secured to the roll shaft for rotation therewith and a drive gear coaxial with the boss, and coupled to the boss, so as to be angularly adjustable with respect thereto, by means of an eccentric cam shaft, whereby rotation of the cam shaft causes angular displacement between the driving gear and the roll shaft.

Device for adjusting the phase of roll dies in a cross-rolling machine

A cross-rolling machine including a device for holding a workpiece between the rolls during a forming operation, the device comprising a pair of guide boards each mounted on a frame assembly including a guide bar, so as to be arranged one on each side of the workpiece when the machine is in use, each guide board being movable from the machine frame integrally with its frame assembly by sliding movement of the guide bar along a guide track on the machine frame.

Device for holding raw material in a cross-rolling machine

A process and apparatus for rollingly forming a cylindrical member having a reduced diameter portion at its intermediate portion by using a cross-rolling forming apparatus. The width in cross-section each of the dies in the rolls of the apparatus is gradually varied or decreased as the working of the member advances by providing clearance surfaces in the beveled side surfaces of the dies at an appropriate escape angle so that the surfaces in the member which have been worked by the dies are held clear of the side surfaces of the dies.

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Hiroshima, Japan

Yukitsugu Kobayashi