Mori Seiki Co., Ltd.

Hidehito Ota

Hiroki Nagahara

Tsuyoshi Fujimoto

Tatsuhiko Kuriya

Hiroshi Kamo

There is provided a machine tool capable of housing workpieces of different sizes in a same workpiece storage unit without requiring a new workpiece storage unit. In a machine tool including a workpiece storage unit having a plurality of housing spaces housing workpieces and a processing machine processing a workpiece supplied from one of the housing spaces, the workpiece storage unit is structured so that the size of each housing space is changeable.

Machine tool

Machine tool furnished with: a table () free to swivel about a horizontal swivel center axis, and having a table body () for carrying a workpiece, and an axially rotatable rotary shaft () disposed with the axis of the rotary shaft () coinciding with the swivel center axis, with a first end of the rotary shaft affixed to the table body (); a support structure () for supporting rotatably the rotary shaft () via a bearing (); a swivel drive mechanism () for axially rotating the rotary shaft (); riding members () abutting on an outer-peripheral locus on a rotary shaft () second end, off a portion, supported by the bearing (), of the rotary shaft (); and hold-down mechanisms () arranged on the support structure (), for supporting the riding members () and thereby pressing on and apply a load to the rotary shaft () outer-peripheral locus from above.

A tool-exchange apparatus making an area to install a whole machine tool compact and facilitating a attachment/detachment and a maintenance and the like of a tool. The tool-exchange apparatus includes a plurality of tool pots respectively having tool storage portion . The tool pot is indexed at an indexing position for exchanging tools, whereby the next tool T put in the opening of the tool storage portion is exchanged for the present tool T installed in a spindle. The tool pots are circumferencially spaced away from each other, and an opening of each tool accommodation area is centrally directed. The tools T are held by the tool pots in a radial manner. The tool magazine 1 can be made compact because the tools T are radially held with the tips thereof centrally directed.

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Kizugawa, Japan

Hidehito Ota