Machine tool and control method of machine tool
AssigneeFanuc Corporation
InventorsTomoki Shimizu, Yonpyo Hon
Life of this patent
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Abstract
A machine tool for performing a cutting process on a workpiece with a cutting tool, includes: a pre-machining shape acquisition unit configured to acquire the shape of the workpiece before cutting, as a pre-machining shape; a target shape acquisition unit configured to acquire a target shape of the workpiece after cutting; a differential shape acquisition unit configured to acquire a differential shape between the pre-machining shape and the target shape; and a machining path setting unit configured to set machining paths so as to perform the cutting process on the differential shape only.
Claims18
A machine tool for performing a cutting process on a workpiece with a cutting tool, the machine tool comprising:
- a measurement unit configured to scan an upper surface of a pre-machining workpiece to measure a height of the upper surface of the pre-machining workpiece at measurement points with respect to a reference plane located below an upper surface of a post-machining workpiece;
- a pre-machining shape acquisition unit configured to acquire, as a pre-machining shape, a shape of the upper surface of the pre-machining workpiece, based on information on the height of the upper surface of the pre-machining workpiece, with respect to the reference plane, at each of the measurement points measured by the measurement unit;
- a target shape acquisition unit configured to acquire, as a reference surface, a target shape of the upper surface of the post-machining workpiece;
- a differential shape acquisition unit configured to acquire a differential shape between the pre-machining shape and the target shape by comparing, with respect to the reference plane, the reference surface of the post-machining workpiece and the shape of the upper surface of the pre-machining workpiece;
- and
- a machining path setting unit configured to set machining paths so as to perform the cutting process on only the differential shape.
A control method of a machine tool for performing a cutting process on a workpiece with a cutting tool, the control method comprising:
- scanning an upper surface of a pre-machining workpiece to measure a height of the upper surface of the pre-machining workpiece at measurement points with respect to a reference plane located below an upper surface of a post-machining workpiece;
- acquiring, as a pre-machining shape, a shape of the upper surface of the pre-machining workpiece, based on information on the height of the upper surface of the pre-machining workpiece, with respect to the reference plane, at each of the measurement points;
- acquiring, as a reference surface, a target shape of the upper surface of the post-machining workpiece;
- acquiring a differential shape between the pre-machining shape and the target shape by comparing, with respect to the reference plane, the reference surface of the post-machining workpiece and the shape of the upper surface of the pre-machining workpiece;
- and
- setting machining paths so as to perform the cutting process on only the differential shape.
Dependencies are inferred from the claim text.