A machine tool that machines a workpiece by a tool includes a workpiece spindle device that holds the workpiece in a rotatable manner with a predefined workpiece rotational axis Rw as a center, one or more in-machine robots, and a connecting mechanism that attaches the one or more robots on the machine tool so that the one or more robots move independently from the workpiece, with the workpiece rotational axis Rw serving as a center.

A machine tool is provided which can execute various works while suppressing increase in cost or size. The machine tool includes a tool spindle device which is a movable member which can move with respect to a mounting surface of the machine tool, and one or more serial-manipulator-type robots attached on the tool spindle device, which can move with the tool spindle device, and which have two or more degrees of freedom, and the robot includes two or more end effectors provided at positions different from each other with one or more joints therebetween.

A machine tool that cuts a workpiece by a rotary tool includes a tool spindle device that holds the rotary tool in a manner to allow self-rotation with a predefined tool rotational axis Rt as a center, one or more in-machine robots, and a connecting mechanism that attaches the in-machine robot on the tool spindle device so that the in-machine robot moves independently from the rotary tool at a periphery of the tool spindle device with the tool rotational axis Rt as a center.

A manufacturing machine is capable of subtractive manufacturing and additive manufacturing for a workpiece. The manufacturing machine includes: a first headstock and a second headstock disposed in a machining area and configured to hold a workpiece; a tool spindle and a lower tool rest disposed in the machining area and configured to hold a tool to be used for subtractive manufacturing for the workpiece; an additive manufacturing head configured to discharge a material during additive manufacturing for the workpiece; a workpiece gripper configured to grip the workpiece during transportation of the workpiece into and out of the machining area; and a robot arm on which the additive manufacturing head and the workpiece gripper are mountable. Accordingly, the manufacturing machine improving the productivity in the simple and easy manner is provided.

A manufacturing machine is capable of subtractive manufacturing and additive manufacturing for a workpiece. The manufacturing machine includes: a first headstock and a second headstock disposed in a machining area and configured to hold a workpiece; a tool spindle and a lower tool rest disposed in the machining area and configured to hold a tool to be used for subtractive manufacturing for the workpiece; an additive manufacturing head configured to discharge a material during additive manufacturing for the workpiece; a workpiece gripper configured to grip the workpiece during transportation of the workpiece into and out of the machining area; and a robot arm on which the additive manufacturing head and the workpiece gripper are mountable. Accordingly, the manufacturing machine improving the productivity in the simple and easy manner is provided.

The invention relates to a machining device for workpieces, comprising a first workpiece table that is displaceable along a longitudinal direction and comprising a second workpiece table that is displaceable in the longitudinal direction, wherein the two workpiece tables are arranged spaced apart perpendicular to the longitudinal direction, wherein each of the two workpiece tables comprises clamping elements for clamping a workpiece, and wherein a guide element is also provided, which is arranged aligned perpendicular to the longitudinal direction and is used for the displaceable guidance of a tool element, comprising a first tool element, which is displaceably arranged on the guide element for machining the workpiece, comprising a first manipulator device for gripping and positioning a workpiece into at least one clamping element of one of the workpiece tables or for removing a workpiece from at least one clamping element of one of the workpiece tables.

A workpiece supply device is provided that is capable of supplying a workpiece to be machined next in a supplying area of the workpiece outside a machining area while the machining area is closed to control scattering of cutting fluid from the machining area during the machining of the workpiece. A machine tool includes a machining room of the workpiece, a loader room, a dividing wall having an opening part, a main spindle, a workpiece supply device, a delivery device, and an ejection device. The workpiece supply device includes a workpiece holder, a movement mechanism, a cover member, and a coil spring. The coil spring biases the cover member to close the opening part by the cover member such that the workpiece holder holds the workpiece in the loader room during the machining of the workpiece in the machining room.

A workpiece supply device is provided that is capable of supplying a workpiece to be machined next in a supplying area of the workpiece outside a machining area while the machining area is closed to control scattering of cutting fluid from the machining area during the machining of the workpiece. A machine tool includes a machining room of the workpiece, a loader room, a dividing wall having an opening part, a main spindle, a workpiece supply device, a delivery device, and an ejection device. The workpiece supply device includes a workpiece holder, a movement mechanism, a cover member, and a coil spring. The coil spring biases the cover member to close the opening part by the cover member such that the workpiece holder holds the workpiece in the loader room during the machining of the workpiece in the machining room.

A machining system includes a robot arm for changing a workpiece or inspecting a machined workpiece, and a probe that is attached to a distal end portion of the robot arm via a force sensor, where the robot arm is controlled such that the probe is arranged at a predetermined measurement position in contact with a side surface of a tool holder, where detection values of the force sensor are obtained over a predetermined period of time in a state where a main spindle is performing rotation operation, where an attached state of the tool holder is determined based on the detection values obtained over the predetermined period of time.

A machining system includes a cover body having an opening and defining a machining area of a workpiece, a door portion provided in the opening, an actuator that operates the door portion between a first position at which the opening is closed and a second position at which the opening is opened, a controller that controls the actuator, and a robot arm that operates through the opening to convey a workpiece between the machining area and an external area outside the machining area. The controller controls the actuator such that the door portion is positioned at a third position when the robot arm conveys the workpiece. An opening area of the opening when the door portion is positioned at the third position is smaller than an opening area of the opening when the door portion is positioned at the second position.