Ishikawajima-harima Jukogyo Kabushiki Kaisha

Masao Nitanda

Heiji Kato

Isao Imai

Tsukasa Oyauchi

Kinichi Higuchi

Masujiro Yoshida

Mitsuhiko Ichikawa

Kohei Hosoi

Takaaki Mori

Axially extending liquid-tight tapered spaces are defined in the barrel of a roll body. Tapered pistons are fitted in the spaces for engagement and disengagement with a bore inner surface defining the tapered spaces. A liquid under pressure is supplied through liquid passages to some of liquid pressure chambers at opposite ends of the tapered pistons so that the barrel of the roll body is increased or decreased in diameter. When the rolling forces are removed from the roll body, the roll body returns to its initial straight state.

Roll for rolling mill

Longitudinal axial positions in a roll longitudinal axis of ring pistons fitted into a profile-variable rolling roll are detected with a higher degree of accuracy. In response to outputs representative of the detected longitudinal axial positions of the ring pistons, the positions of the ring pistons can be controlled with a high degree of accuracy, whereby controllability of shape of the rolling roll is enhanced.

Rolling roll with variable profile and of the tapered piston type

Growing community of inventors

Tokyo, Japan

Masao Nitanda