A machining jig for rotatably supporting a workpiece comprising: a rotary drive part which rotates a seating part about a rotation axis, a clamp arm which has a rotary type clamp member which cooperates with the seating part to fasten a workpiece at a position separated from the seating part in a direction along the rotation axis of the seating part, a linear drive part which moves the clamp arm in a direction along a rotation axis, a position adjusting part which adjusts a position of the clamp arm in a plane intersecting the rotation axis, and a tilt adjusting part which adjusts a tilt of the clamp member so that a rotation axis of the clamp member becomes parallel with the rotation axis of the seating part.

A machining jig for rotatably supporting a workpiece comprising: a rotary drive part which rotates a seating part about a rotation axis, a clamp arm which has a rotary type clamp member which cooperates with the seating part to fasten a workpiece at a position separated from the seating part in a direction along the rotation axis of the seating part, a linear drive part which moves the clamp arm in a direction along a rotation axis, a position adjusting part which adjusts a position of the clamp arm in a plane intersecting the rotation axis, and a tilt adjusting part which adjusts a tilt of the clamp member so that a rotation axis of the clamp member becomes parallel with the rotation axis of the seating part.

A machine tool includes a stationary machine frame, a tool head, which is able to be positioned relative to the machine frame along three mutually orthogonal translation axes, and a motor-driven tool. The machine tool includes a swivel unit, which can be pivoted about a horizontal swivel axis relative to the machine frame and includes a workpiece positioning device, via which a workpiece can be rotated about an axis of rotation oriented perpendicularly to the swivel axis. The swivel unit is assigned a measuring frame, which is able to be rotated with the swivel unit and is arranged to be thermally and/or mechanically decoupled from the swivel unit and includes components of a first and second position measuring system. Additional components of the first position measuring system are disposed on the tool head, and further components of the second position measuring system are situated on the workpiece positioning device. The spatial position of the tool head in relation to the measuring frame is ascertained via the first position measuring system, and the spatial position of the workpiece positioning device in relation to the measuring frame takes place via the second position measuring system.

A machine tool includes a stationary machine frame, a tool head, which is able to be positioned relative to the machine frame along three mutually orthogonal translation axes, and a motor-driven tool. The machine tool includes a swivel unit, which can be pivoted about a horizontal swivel axis relative to the machine frame and includes a workpiece positioning device, via which a workpiece can be rotated about an axis of rotation oriented perpendicularly to the swivel axis. The swivel unit is assigned a measuring frame, which is able to be rotated with the swivel unit and is arranged to be thermally and/or mechanically decoupled from the swivel unit and includes components of a first and second position measuring system. Additional components of the first position measuring system are disposed on the tool head, and further components of the second position measuring system are situated on the workpiece positioning device. The spatial position of the tool head in relation to the measuring frame is ascertained via the first position measuring system, and the spatial position of the workpiece positioning device in relation to the measuring frame takes place via the second position measuring system.

A counterweight mechanism for a swivel arrangement includes first and second counterweights each including a seat, an axle, and two cylinders. The swivel arrangement has one end adjacent to the axle. The axle is rotatably, partially disposed in the seat. Each cylinder has a first end pivotably secured to a position proximate to the axle and a second end pivotably secured to the seat.

A counterweight mechanism for a swivel arrangement includes first and second counterweights each including a seat, an axle, and two cylinders. The swivel arrangement has one end adjacent to the axle. The axle is rotatably, partially disposed in the seat. Each cylinder has a first end pivotably secured to a position proximate to the axle and a second end pivotably secured to the seat.

A machine tool for implementing machining with rotation, the machine tool includes a first rotor, an enclosure, a first rail, a second rail, and a coupler. The first rotor rotates about a rotational axis. The first rotor is surrounded with the enclosure. The first rail is disposed on the first rotor. The second rail is disposed on the enclosure so as to be brought into alignment with the first rail at a rotational position. The coupler moves along the first rail and the second rail. The coupler is to engage with the first rail and the second rail in a first state and to engage with the second rail without engaging with the first rail in a second state.

A machine tool for implementing machining with rotation, the machine tool includes a first rotor, an enclosure, a first rail, a second rail, and a coupler. The first rotor rotates about a rotational axis. The first rotor is surrounded with the enclosure. The first rail is disposed on the first rotor. The second rail is disposed on the enclosure so as to be brought into alignment with the first rail at a rotational position. The coupler moves along the first rail and the second rail. The coupler is to engage with the first rail and the second rail in a first state and to engage with the second rail without engaging with the first rail in a second state.

An apparatus and method are provided for three dimensional cutting of a multi-axis feature into a workpiece that are at least partially characterized by a lack of rotationally symmetrical tools and an ability to produce high aspect ratio (depth to diameter) features using mechanical machining. The apparatus includes a base, a displaceable machine table supported on that base, a displaceable spindle supported on the base adjacent the machine table, a cutting tool held in a chuck carried on the spindle and a control module. The control module includes a controller and a plurality of actuators to provide precise displacement of the machine table, spindle, cutting tool and the workpiece for cutting multi-axis surface features into the workpiece.

An apparatus and method are provided for three dimensional cutting of a multi-axis feature into a workpiece that are at least partially characterized by a lack of rotationally symmetrical tools and an ability to produce high aspect ratio (depth to diameter) features using mechanical machining. The apparatus includes a base, a displaceable machine table supported on that base, a displaceable spindle supported on the base adjacent the machine table, a cutting tool held in a chuck carried on the spindle and a control module. The control module includes a controller and a plurality of actuators to provide precise displacement of the machine table, spindle, cutting tool and the workpiece for cutting multi-axis surface features into the workpiece.