A machining tool positioning system includes a post configured to rotatably mount relative to a hollow component to be machined. A base member slidingly mounts relative to the post. A first actuator is configured to selectively slidingly move the base member relative to the post. A tool slide rail is coupled to the base member and extends perpendicular to the post. A machining tool slide mount slidingly couples to the tool slide rail and is configured to position a machining tool relative to the rail. A second actuator is coupled at a first end to the base member and coupled at a second end to the machining tool slide mount is configured to selectively move the machining tool slide mount along the rail. A motor may optionally turn the post to rotate the position of the base member and machining tool.

A numerical control device according to one aspect of the present disclosure capable of easily setting a tip point control is provided with: an edge shape information storage unit; a center position calculation unit that calculates a center position of rotation of a multi-edge tool having machining edges; an edge switching determination unit that determines whether or not edge switching is to be performed; a calculation method changing unit that takes the edge shape information into account and changes, in association with the edge switching, a method for calculating the center position by the center position calculation unit; a tip position back calculation unit that, on the basis of the calculation method changed by the calculation method changing unit, back-calculates a tip position after the edge switching from the center position immediately before the edge switching; and a change amount calculation unit that calculates, on the basis of a tip position and a shaft angle before the edge switching and the tip position and a shaft angle after the edge switching that have been calculated by the tip position back calculation unit, a required change amount of the center position, and calculates a driving amount of a driving shaft for moving a tool rotation axis by the calculated change amount.

A numerical control device according to one aspect of the present disclosure capable of easily setting a tip point control is provided with: an edge shape information storage unit; a center position calculation unit that calculates a center position of rotation of a multi-edge tool having machining edges; an edge switching determination unit that determines whether or not edge switching is to be performed; a calculation method changing unit that takes the edge shape information into account and changes, in association with the edge switching, a method for calculating the center position by the center position calculation unit; a tip position back calculation unit that, on the basis of the calculation method changed by the calculation method changing unit, back-calculates a tip position after the edge switching from the center position immediately before the edge switching; and a change amount calculation unit that calculates, on the basis of a tip position and a shaft angle before the edge switching and the tip position and a shaft angle after the edge switching that have been calculated by the tip position back calculation unit, a required change amount of the center position, and calculates a driving amount of a driving shaft for moving a tool rotation axis by the calculated change amount.

Provided is a machine tool control device that can realize a desired scrap length while suppressing deterioration in machining accuracy. This control device 1 is for a machine tool which performs machining while causing a tool and a workpiece to oscillate relative to each other, the control device 1 being provided with: an oscillation command generation unit 13 for generating an oscillation command on the basis of an oscillation condition; an oscillation command correction unit 14 for correcting the oscillation command so that main-axis phases in given oscillation phases are not identical to each other; and a position/speed control unit 18 for causing the tool and the workpiece to oscillate relative to each other on the basis of a superposition command generated by superposing the oscillation command corrected by the oscillation command correction unit 14 on a movement command.

Provided is a machine tool control device that can realize a desired scrap length while suppressing deterioration in machining accuracy. This control device 1 is for a machine tool which performs machining while causing a tool and a workpiece to oscillate relative to each other, the control device 1 being provided with: an oscillation command generation unit 13 for generating an oscillation command on the basis of an oscillation condition; an oscillation command correction unit 14 for correcting the oscillation command so that main-axis phases in given oscillation phases are not identical to each other; and a position/speed control unit 18 for causing the tool and the workpiece to oscillate relative to each other on the basis of a superposition command generated by superposing the oscillation command corrected by the oscillation command correction unit 14 on a movement command.