Abstract: The present invention provides a machine tool which is adapted to discharge chips brought into the work area from the machining area outside the machine tool by a simpler operation. The machine tool (1) comprises a bed (51), a column (52), a spindle head (53), a table (54), a pallet base (63) and a pallet changer (11), wherein the spindle head (53) and the table (54) are movable relative to each other along three orthogonal axes. In the machine tool (1), a chip conveyor (10) having a transport path located below a machining area (A) and a work area (B) is provided for conveying chips. Thus, chips generated in the machining area (A) and chips brought into the work area (B) from the machining area (A) are collected on the chip conveyor (10), and conveyed and discharged outside the machine tool (1) by the chip conveyor (10).

Abstract: The present invention provides a machine tool which is adapted to discharge chips brought into the work area from the machining area outside the machine tool by a simpler operation. The machine tool (1) comprises a bed (51) , a column (52) , a spindle head (53) , a table (54), a pallet base (63) and a pallet changer (11), wherein the spindle head (53) and the table (54) are movable relative to each other along three orthogonal axes. In the machine tool (1), a chip conveyor (10) having a transport path located below a machining area (A) and a work area (B) is provided for conveying chips. Thus, chips generated in the machining area (A) and chips brought into the work area (B) from the machining area (A) are collected on the chip conveyor (10), and conveyed and discharged outside the machine tool (1) by the chip conveyor (10).

Abstract: A tool transfer device for machine tools that can reduce the tool transfer time and also reduce the cost of the device by eliminating the need for a driving source. The tool transfer device for machine tools has a tool magazine set beside a spindle on which a tool is mounted. The tool magazine serves for accommodating and holding therein a multiplicity of tools so that the tools are directed perpendicular to an axis of the spindle. A transfer pot is set on a spindle side of the tool magazine and is driven and moved by a horizontal moving unit and a vertical moving unit. This allows a next-process tool accommodated in the tool magazine to be taken out and transferred horizontally to a stroke end position by the transfer pot, and the next-process tool is then tilted at the stroke end position to a tool changing position in which the next-process tool is parallel to the axis of the spindle.

Abstract: Providing a spindle unit that guarantees an appropriate changing of a pre-load applied to rolling bearings.