Mori Seiki Co., Ltd.

Kuroda Seiko Co., Ltd.

Mori Seki Co., Ltd.

Nobuyuki Kimura

Naoshi Takayama

Takayuki Akai

Kazuyuki Hiramoto

Michio Watanabe

Shigeru Suzuki

Toshihide Kamei

Hikaru Ishigaki

Toru Yagami

Motonori Kobara

Yoshiaki Sugimoto

Yasuhiro Hisatomi

Hiroshi Yonetani

Kiyoyuki Fukushima

Takahiro Kobi

Yoshimasa Sakamoto

Yoshinori Yamaguchi

Machine tool simplifying maintenance, reducing manufacturing costs, and enabling high precision machining. The machine tool is equipped with: a bed furnished with a rectangular base, right and left sidewalls provided standing either side of the base, and a rear sidewall provided standing along the back of the base; a table disposed in the space surrounded by the three sidewalls; a first saddle shaped in the form of a rectangular frame shape, provided free to shift back and forth supported on the tops of the left and right sidewalls; a second saddle penetrated by a perpendicular through-hole and arranged free to shift sideways inside the first saddle frame; and a spindle head arranged free to shift perpendicularly inside the through-hole in the second saddle; and a main spindle arranged over the table and supported by the spindle head free to rotate centered on its axis.

Machine tool

Machine tool having a bed, a table arranged on the bed, a first saddle provided free to travel back and forth, a second saddle supported on the first saddle and provided free to travel side to side, a spindle head provided free to travel perpendicularly on the second saddle, a main spindle situated above the table and by the spindle head supported free to rotate on its center axis, a front cover provided on the front side of the bed and furnished with doors that open and close sideways, and top covers configured with one end sideways shiftably connected to the front side of the first saddle, and with another end connected extensibly/retractably to the top of the front-cover doors, therein being configured for permitting back-and-forth-directed movement of the first saddle.

This invention provides a tool clamping/unclamping device which allows a tool to be replaced simply and securely by another one in short time, and which prevents a lock nut from being loosened, from yielding a difference in phase, and from dropping off with respect to a main shaft. The tool clamping/unclamping device comprises a tool urging means for holding a tool holding member in its clamped state, a nut positioning means for adjusting the lock nut in its phase in rotation angle position with respect to the main shaft, a nut drop-off preventing means for regulating the amount of rotation angle of the nut, a nut loosening detection means for detecting the position of the nut in the direction of the main shaft, and/or a locking mechanism for engaging a steel ball urged by a spring with a lock hole to thereby lock the lock nut in the direction of rotation. Further, for a hollow main shaft, a relay member is attached thereto, the relay member being formed similarly to the lower end portion of the solid main shaft.

Tool clamping/unclamping device

Growing community of inventors

Yamatokoriyama, Japan

Nobuyuki Kimura