Mori Seiki Co., Ltd.

Tsutomu Tokuma

Kazuhiko Matsumoto

Yukinaga Sasazawa

Toshio Ueda

Masamitsu Nakaminami

Koji Fujimoto

Yoshinori Sakashita

Kento Komine

Yutaka Nishimura

Hiroshi Hashimoto

Syuji Takeuchi

Hiroyuki Tsuchiya

A multi-axis turning center for turning operations includes a machine body, a tool rest means for holding a tool, a first headstock for holding a workpiece, and a second headstock disposed in confronting relation to the first headstock, for holding a workpiece. The second headstock has a front chuck and a rear chuck for gripping respective workpieces. The second headstock performs a workpiece changing function by swiveling about a central axis. The multi-axis turning center is capable of automatically changing the workpieces by itself while it is carrying out a machining process, without the need for a workpiece changer. The multi-axis turning center does not need to stop its machining process for changing workpieces, resulting in an increase in the utilization ratio thereof.

Machine tool for turning operations

To provide a machine tool in which supporting stiffness of a tool post is increased, thereby enabling improvement in machining accuracy. When seen in a Z-axis direction, a tool postincludes: a supporting memberhaving a pair of left and right leg partsand an upper beam partcoupling at least upper ends of the both leg partswith each other; and a turretto whose outer circumferential portion a plurality of tools are attached. The supporting memberis supported to be movable in a Z-axis direction between a first and a second spindle headstock, and the turretis supported to be movable in an X-axis direction by turret guide railswhich are disposed on front faces of the left and right leg parts

Machine tool

To provide a composite lathe enabling the overlapping of movement areas without lowering supporting stiffness of a tool post, and thus realizing enhanced machinability. An XY supporting plane A by which a tool postin is supported to be movable in an X-axis direction is set non-parallel to an XZ supporting plane B by which a third spindleis supported to be movable in the X-axis direction, and an axis of the movement in the X-axis direction of the tool postis set apart in a Y-axis direction from an axis of the movement in the X-axis direction of the third spindle

Composite lathe

To provide a composite lathe enabling downsizing of a machine main body and realizing an enlarged machining area. A cutting point 'c' of a tool postis positioned vertically under a straight line connecting axes 'a' of a first spindle headstockand a second spindle headstockand an X-axis stroke of a cutting point of a third spindleoverlaps an X-axis stroke of the tool postby a half or more of the X-axis stroke of the tool post

To provide a machine tool in which a workpiece can be delivered to/from a first and a second spindle headstock without any increase in front/back direction dimension of a machine main body. A second spindle headstockis capable of moving to a position for workpiece delivery to/from a first spindle headstockso as to be close to or to abut on the first spindle headstockWhen the second spindle headstockis positioned at the workpiece delivery position, a tool postis positioned right under the first spindle headstockso that its cutting point 'c' is positioned vertically under an axis 'a' of the first and second spindle headstocks

An NC lathecomprises a bed, a headstockprovided on the bed, a main spindlesupported on the headstockso as to be rotatable around the axis thereof, a rotation drive device for rotating the main spindle, a stationary frameformed in a rectangular frame shape and fixed to the upper face of the bed, a movable frameformed in a rectangular frame shape and provided so as to be movable in the Z-axis direction with respect to the stationary frame, a saddleprovided so as to be movable in the X-axis direction with respect to the movable frame, a quillaccommodated inside the accommodation holea in the saddleand provided so as to be movable in the Y-axis direction, and a tool restsupported on the quill

NC lathe

A lathecomprises a bed, a headstockhaving a housingand a support base, a main spindle, a first tool rest, and a second tool rest. The support baseis formed so as to have a concave portionon the upper portion thereof and so that the upper portion protrudes toward the second tool rest. The tool rest bodyof the second tool restis configured so as to be movable into and out of a space formed downward from the upper portion of the support base. The housinghas a holding holefor rotatably holding the main spindle, and installation portions. The installation portionsare supported on the support basein a state wherein a predetermined clearance is provided between the housingand the concave portion

Lathe

A machine tool which can avoid interference between a tool post body and a second headstock without increasing the size of a fixed bed or decreasing the structural support rigidity is disclosed. Specifically, a combined-machining lathe comprises a first headstock fixed on a fixed bed; at least one of a tailstock and a second headstock is movably disposed on the fixed bed so as to be movable along the fixed bed; and a tool post body for rotationally supporting a turret having a plurality of tools set thereon. The tool post body is movably disposed between the first headstock and the at least one of a tailstock and a second headstock. The turret is placed on one side of the tool post body that is closer to the at least one of a tailstock and a second headstock, and the first headstock has a recessed portion that is dimensioned to accommodate the tool post body therein.

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Yamatokoriyama, Japan

Tsutomu Tokuma