Abstract: A machine tool includes a bed, a column which is provided on the bed so as to be erected therefrom, a saddle which is a moving body supported by the column, and a tool spindle which is supported by the saddle and rotates a tool around a rotation center axis extending in a Z-axis direction parallel to a horizontal direction. The saddle has a frame portion which is provided so as to surround the tool spindle. The thickness of the frame portion in the Z-axis direction changes along a Y-axis direction parallel to a vertical direction, and becomes maximum at a first position-(Pa) closer to an upper end portion of the frame portion than a lower end portion of the frame portion.

Abstract: A machine tool includes a table, a first guide portion and a second guide portion that guide the table in the Z-axis direction and are arranged apart from each other in an X-axis direction, and a bed that includes a first guide mounting portion and a second guide mounting portion on which the first guide portion and the second guide portion are mounted respectively, and is provided with an opening portion which is located between the first guide mounting portion and the second guide mounting portion and penetrates in a Y-axis direction. The first guide mounting portion and the second guide mounting portion are respectively provided with a first facing surface and a second facing surface which face each other across the opening portion. The bed further includes a rib portion which is located in the opening portion and connected to the first facing surface and the second facing surface.

Abstract: A machine tool includes a bed, and a table that is provided on the bed and movable in a Z-axis direction. The table includes a workpiece holder, a table base including a first support portion and a second support portion for turnably supporting the workpiece holder at positions spaced from each other in an X-axis direction, the workpiece holder being mounted on the table base, and a turning device that is provided in the first support portion, and turns the workpiece holder around a turning center axis extending in the X-axis direction. The machine tool further includes a first feeding device and a second feeding device that are provided on the bed and are connected to the first support portion and the second support portion respectively to drive the table in the Z-axis direction.

Abstract: A coolant supply device includes a coolant tank having first and second coolant reservoirs arranged in parallel with a predetermined space therebetween and a communicating part arranged between the first and second coolant reservoirs to allow them to communicate with each other, and formed to have a U-shaped overall shape. The coolant supply device further includes pumps pumping up coolant from the second coolant reservoir and supplying the coolant to predetermined destinations. The coolant supplied by the pumps is returned to the first coolant reservoir and flows into the second coolant reservoir through the communicating part. The first coolant reservoir has a first agitating nozzle body disposed therein for discharging coolant to assist a flow of coolant flowing toward the communicating part, and the second coolant reservoir has a second agitating nozzle body disposed therein for discharging coolant to assist a flow of coolant flowing therein from the communicating part.

Abstract: A coolant supply device includes a coolant tank having first and second coolant reservoirs arranged in parallel with a predetermined space therebetween and a communicating part arranged between the first and second coolant reservoirs to allow them to communicate with each other, and formed to have a U-shaped overall shape. The coolant supply device further includes pumps pumping up coolant from the second coolant reservoir and supplying the coolant to predetermined destinations. The coolant supplied by the pumps is returned to the first coolant reservoir and flows into the second coolant reservoir through the communicating part. The first coolant reservoir has a first agitating nozzle body disposed therein for discharging coolant to assist a flow of coolant flowing toward the communicating part, and the second coolant reservoir has a second agitating nozzle body disposed therein for discharging coolant to assist a flow of coolant flowing therein from the communicating part.

Abstract: In the multi-axial machine tool, a table unit is detachably mounted on the upper surface of the interior portion of a portal bed disposed on a leg. The table unit comprises a table base fixed to the upper surface of the leg, a turning table which, when it is viewed at a reference working position, is turnably disposed on an inclined turning surface of the table base formed so as to be inclined in a descending manner toward a front side of the machine tool, and a work table disposed on the table support portion of the turning table so as to be turnable around axes lying in parallel with the axis of a spindle.

Abstract: In the multi-axial machine tool, a table unit is detachably mounted on the upper surface of the interior portion of a portal bed disposed on a leg. The table unit comprises a table base fixed to the upper surface of the leg, a turning table which, when it is viewed at a reference working position, is turnably disposed on an inclined turning surface of the table base formed so as to be inclined in a descending manner toward a front side of the machine tool, and a work table disposed on the table support portion of the turning table so as to be turnable around axes lying in parallel with the axis of a spindle.