The purpose of the present invention is to improve the machined-surface quality of a curved surface of a workpiece without reducing the machining speed when the curved surface is subjected to removal machining. Provided is a workpiece machining method in which a rotating table on which a workpiece is placed and a tool are relatively moved along two linear movement axes orthogonal to each other, the workpiece is rotated about each of a first turning axis and a second turning axis orthogonal to each other by the rotating table, and at least one curved surface of a protruding curved surface and a recessed curved surface is subjected to removal machining. The method includes: disposing the first turning axis so as to be parallel to a first linear movement axis of the two linear movement axes, the motor load during linear movement in the first linear movement axis being relatively small; disposing the second turning axis on a plane perpendicular to the first linear movement axis; and subjecting the curved surface to removal machining along the direction of curvature while moving the workpiece along the first linear movement axis and rotating the workpiece about the second turning axis.

The present disclosure relates to a cutting machine comprising a rotating cutting wheel for performing separating cuts in a workpiece, and also relates to a workpiece positioning device for such a cutting machine. The cutting machine comprises a cutting wheel and a drive motor for driving the cutting wheel, a clamping means for clamping the workpiece, means for mechanically positioning the workpiece along one or two translational directions and additionally about one or two rotation axes, and a lifting mechanism for setting the cutting wheel on the workpiece to perform separating cuts in the positioned workpiece using the cutting wheel.

A machine tool includes a headstock that holds a workpiece, a tool post that is movable in a first axis direction parallel to a workpiece rotation axis and in a second axis direction orthogonal to the first axis and holds a tool, an in-machine robot, an opening for communicating the inside and the outside of a working chamber, and a door that opens and closes the opening. The robot includes a root joint fixed in the working chamber and a link unit positioned on a distal end side of the root joint. The root joint is a linear-motion joint extendable in a direction orthogonal to the workpiece rotation axis, and is a linear-motion joint extendable between the length for causing the entire link unit to be positioned inside the working chamber and the length for causing the entire link unit to be positioned outside the working chamber.

The present disclosure relates to a cutting machine comprising a rotating cutting wheel for performing separating cuts in a workpiece, and also relates to a workpiece positioning device for such a cutting machine. The cutting machine comprises a cutting wheel and a drive motor for driving the cutting wheel, a clamping means for clamping the workpiece, means for mechanically positioning the workpiece along one or two translational directions and additionally about one or two rotation axes, and a lifting mechanism for setting the cutting wheel on the workpiece to perform separating cuts in the positioned workpiece using the cutting wheel.

A machine tool includes a headstock that holds a workpiece, a tool post that is movable in a first axis direction parallel to a workpiece rotation axis and in a second axis direction orthogonal to the first axis and holds a tool, an in-machine robot, an opening for communicating the inside and the outside of a working chamber, and a door that opens and closes the opening. The robot includes a root joint fixed in the working chamber and a link unit positioned on a distal end side of the root joint. The root joint is a linear-motion joint extendable in a direction orthogonal to the workpiece rotation axis, and is a linear-motion joint extendable between the length for causing the entire link unit to be positioned inside the working chamber and the length for causing the entire link unit to be positioned outside the working chamber.

A three-axis tool head unit for a machine tool spindle, which comprises three components, which are rotatable or pivotable relative to each other about independent axes. A first head part is rotatably mounted on a support arm about a first axis with respect to the support arm. A second head part is rotatably mounted on the first head part about a second axis with respect to the first head part. A spindle device is rotatably mounted on the second head part about a third axis with respect to the second head part. The third rotary axis is oriented orthogonally to the first and the second rotary axes, while the first and the second rotary axes are inclined relative to each other. Each of the three rotary axes has an associated individual drive device for driving and controlling the rotation of the component about its respective axis.

A machine tool includes a machine bed, a tool clamping portion which is arranged on the machine bed and serves to clamp a workpiece on the machine tool, a swivel arm receiving portion arranged on the machine bed, a first swivel arm pivotally mounted on the swivel arm receiving portion about a first axis of rotation, a second swivel arm pivotally mounted on the first swivel arm about a second axis of rotation, a spindle carrier arm rotatably mounted on the second swivel arm about a third axis of rotation, a milling head rotatably mounted on the spindle carrier arm about a fourth axis of rotation, and a work spindle which is held on the milling head and serves to receive a tool, wherein the third axis of rotation is aligned perpendicularly or transversely to the fourth axis of rotation.

The present disclosure relates to a cutting machine comprising a rotating cutting wheel for performing separating cuts in a workpiece, and also relates to a workpiece positioning device for such a cutting machine. The cutting machine comprises a cutting wheel and a drive motor for driving the cutting wheel, a clamping means for clamping the workpiece, means for mechanically positioning the workpiece along one or two translational directions and additionally about one or two rotation axes, and a lifting mechanism for setting the cutting wheel on the workpiece to perform separating cuts in the positioned workpiece using the cutting wheel.

An adapter converts a three-axis milling machine to a five-axis milling machine includes two gimbal assemblies. A first gimbal assembly is configured to rotate about a first rotation axis. A second gimbal assembly is rotatably connected to the first gimbal assembly to rotate about a second rotation axis orthogonal to the first rotation axis. A first gimbal positioning system is operable to rotate the first gimbal assembly about the first rotation axis with a rotational movement of a first leadscrew positioned in a first plane orthogonal to the first rotation axis. A second gimbal positioning system is operable to rotate the second gimbal assembly about the second rotation axis with a rotational movement of the second leadscrew positioned in a second plane orthogonal to the second rotation axis. The second gimbal assembly includes a spindle and a motor coupled to the spindle to selectively rotate the spindle.

The purpose of the present invention is to improve the machined-surface quality of a curved surface of a workpiece without reducing the machining speed when the curved surface is subjected to removal machining. Provided is a workpiece machining method in which a rotating table on which a workpiece is placed and a tool are relatively moved along two linear movement axes orthogonal to each other, the workpiece is rotated about each of a first turning axis and a second turning axis orthogonal to each other by the rotating table, and at least one curved surface of a protruding curved surface and a recessed curved surface is subjected to removal machining. The method includes: disposing the first turning axis so as to be parallel to a first linear movement axis of the two linear movement axes, the motor load during linear movement in the first linear movement axis being relatively small; disposing the second turning axis on a plane perpendicular to the first linear movement axis; and subjecting the curved surface to removal machining along the direction of curvature while moving the workpiece along the first linear movement axis and rotating the workpiece about the second turning axis.