Toshiba Kikai Kabushiki Kaisha

Masahiko Takasugi

Takeshi Momochi

Takao Arai

Hidemi Yoshino

A spindle () has a chuck () provided on a distal end () thereof for chucking a tool (), and a nut () screwed to the distal end () and rotatable for tightening and loosening the chucking. The spindle () is positioned relative to a nut loosening station provided with a nut loosening driver () for driving the nut () to rotate in a loosening direction, the nut () is loosened by the nut loosening driver () to remove from the chuck () a first tool () to be replaced with a second tool (), the spindle () is positioned relative to a nut tightening station provided with a nut tightening driver () for driving the nut () to rotate in a tightening direction, and the nut () is driven by the nut tightening driver () to tight-chuck the second tool ().

Growing community of inventors

Shizuoka, Japan

Masahiko Takasugi