Yamazaki Mazak Kabushiki Kaisha

Aisin Aw Co., Ltd.

Haruhiko Koike

Michio Norimatsu

Takao Taniguchi

Tsunehiko Yamazaki

Kazutaka Murai

Shigeto Noma

Toshiyuki Andou

Mitsuhiro Yamada

Yuichiro Yoshimura

Jiro Nishida

Atsushi Kohama

Seiichi Kodama

Noboru Yamamoto

Mikio Totsuka

Hideyoshi Kagohashi

Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction, movement of the turn table in a Y-axis direction, and movement of a spindle in a Z-axis direction, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining center in the X-axis direction shorter.

Machining center

When exchanging a tool, a tool of a spindle is stored in an empty pocket of a tool magazine, and thereafter, upward movement of the spindle and rotation of the tool magazine are simultaneously executed. At this time, synchronous control is performed in order to prevent a collision between the spindle and the tool. When installing a next tool in the spindle, both downward movement of the spindle and rotation of the tool magazine are executed while synchronously controlling. The tool exchange time can be shortened with simultaneously executing the movements of the spindle and the tool magazine.

Machining centre

Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction and movement of a spindle on a Y-Z plane, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining centre in the X-axis direction shorter.

A sensor is provided for detecting release of a state of a workpiece fixed and held with workpiece holding members during rotation of a spindle . When the release of the state of the wokpiece fixed and held is detected, the sliding members are driven in a direction of an axial center (in a direction as shown by an arrow D) by a reciprocating drive means . Even if holding force, such as the oil pressure of the workpiece holding member, is lowered, the decrease of the holding force of the workpiece can be extremely avoided by moving the sliding members in the direction of the workpiece.

Control unit of machine tool

A chuck unit for a machine tool is capable of holding a workpiece installed on a spindle by workpiece holding members that move in a radial direction with respect to an axial center. Workpiece holding rods are provided at the workpiece holding member and move radially. Screw operating portions are operated by a rotating operation jig at an outer peripheral side of the chuck unit. A workpiece end face abutment moves and holds the workpiece in the axial direction.

Chuck unit for machine tool

Growing community of inventors

Aichi-ken, Japan

Haruhiko Koike