Laser machining device and laser machining method
AssigneeFanuc Corporation
InventorsKouichi MIYASHITA, Takeshi MOCHIDA
Life of this patent
Estimating the term…
Abstract
A unit vector calculating unit of a laser machining device obtains a unit vector based on respective current rotational positions of an A-axis and a B-axis. A movement command calculating unit, a speed command calculating unit, or a torque command calculating unit generates a command signal for maintaining a gap amount at a constant value, based on the unit vector, and the gap amount between a machining nozzle and a workpiece. With a servo control unit, on the basis of the command signal, an X-axis motor, a Y-axis motor, and a Z-axis motor are controlled, whereby the machining nozzle is moved relatively in three-dimensional directions with respect to the workpiece.
Claims5
A laser machining device in which, in accordance with a machining program, a machining nozzle is moved relatively with respect to a workpiece, the machining nozzle is rotated about a predetermined axis of rotation, and laser machining is performed on the workpiece by a laser beam irradiated from the machining nozzle, comprising:
- a three-dimensional moving unit configured to relatively move the machining nozzle in three-dimensional directions with respect to the workpiece;
- a rotating unit configured to rotate the machining nozzle about the axis of rotation;
- a gap amount detecting unit configured to detect a gap amount between the machining nozzle and the workpiece;
- a rotational position detecting unit configured to detect a rotational position of the axis of rotation by the rotating unit;
- and
- a command calculating unit configured to generate a command signal for maintaining the gap amount at a constant value based on the gap amount and the rotational position;
- wherein the three-dimensional moving unit, on basis of the command signal, relatively moves the machining nozzle in three-dimensional directions with respect to the workpiece.
A laser machining method in which, in accordance with a machining program, a machining nozzle is moved relatively with respect to a workpiece, the machining nozzle is rotated about a predetermined axis of rotation, and laser machining is performed on the workpiece by a laser beam irradiated from the machining nozzle, comprising:
- a first step of detecting, by a gap amount detecting unit, a gap amount between the machining nozzle and the workpiece;
- a second step of detecting, by a rotational position detecting unit, a rotational position of the axis of rotation as rotated by a rotating unit;
- a third step of generating, by a command calculating unit, a command signal for maintaining the gap amount at a constant value based on the gap amount and the rotational position;
- and
- a fourth step of relatively moving, by a three-dimensional moving unit, the machining nozzle in three-dimensional directions with respect to the workpiece based on the command signal.
Dependencies are inferred from the claim text.