To provide a machine tool for turning cutting, which improves an operation rate of the machine tool because a machining operation of the machine tool is not stopped for changing a workpiece through such an arrangement that the machine tool itself automatically changes a workpiece during a machining operation even if a workpiece changer is not equipped separately.
A multifunctional machine 1b is provided with: a machine body 2; a tool holder 3 for holding a tool; a first head stock 4 for holding a workpiece 8; and a second head stock 5a for holding the workpiece, while facing the first head stock, and at least performs turning cutting. The second head stock is provided with a front chuck 34 and a back chuck 36 for gripping the workpiece, and exerts a workpiece changing function by turning about a turning center axis CL1 in a direction parallel to a Y-axis direction.
KOMINE KENTO
TOKUMA KO
NISHIMURA MASARU
| JPH0788702A | 1995-04-04 | |||
| JP2001087901A | 2001-04-03 | |||
| JPH0740112A | 1995-02-10 | |||
| JP2002059301A | 2002-02-26 | |||
| JP2006263862A | 2006-10-05 | |||
| JP2008126372A | 2008-06-05 |
| US20070234541A1 | 2007-10-11 | |||
| WO2001030522A1 | 2001-05-03 |