Machine tool
AssigneeMori Seiki Co., Ltd.
InventorsHiroshi Hashimoto, Hiroyuki Tsuchiya, Tsutomu Tokuma
Life of this patent
Estimating the term…
Abstract
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 headstock 4 is capable of moving to a position for workpiece delivery to/from a first spindle headstock 3 so as to be close to or to abut on the first spindle headstock 3. When the second spindle headstock 4 is positioned at the workpiece delivery position, a tool post 5 is positioned right under the first spindle headstock 3 so that its cutting point “c” is positioned vertically under an axis “a” of the first and second spindle headstocks 3, 4.
Claims7
A machine tool comprising:
- a bed;
- a first spindle headstock disposed on said bed, said first spindle headstock having a tunnel shape having a pair of leg parts and a spindle case part disposed between upper ends of the leg parts;
- a second spindle headstock disposed to be coaxial with said first spindle headstock along a Z-axis and to be movable in the Z-axis direction;
- and a tool post disposed between said first spindle headstock and said second spindle headstock to be movable in the Z-axis direction,
- wherein said second spindle headstock is movable to a position for workpiece delivery to and from said first spindle headstock, and
- wherein said tool post has:
- a turret to which a plurality of tools are attached;
- and a supporting member by which the turret is supported to be movable in an up and down X-axis direction, and when said second spindle headstock is positioned at the workpiece delivery position, the turret is positioned between the first and second spindle headstocks under the Z-axis and a cutting point of the tool post is positioned vertically under the Z-axis, and wherein the supporting member of the tool post is movable into and out of the tunnel of the first spindle headstock.
Dependencies are inferred from the claim text.