Gripping force adjustment device and gripping force adjustment system

A gripping force adjustment device that adjusts a gripping force exerted on a workpiece by a jig for fixing the workpiece in a machine tool that machines the workpiece, comprising:

• a data acquisition unit that acquires at least data indicating a machining state realized by the machine tool and data relating to a gripping state realized on the workpiece by the jig;
• a pre-processing unit that creates data to be used in machine learning on the basis of the data acquired by the data acquisition unit;
• and
• a machine learning device that executes, on the basis of the data created by the pre-processing unit, machine learning processing relating to the gripping force exerted on the workpiece by the jig in the environment in which the machine tool machines the workpiece, wherein
• the pre-processing unit creates, as data to be used in an estimation executed by the machine learning device,
• state data including at least tool data including information relating to a tool used in the machining performed on the workpiece by the machine tool, machining condition data including information relating to machining conditions of the machining performed on the workpiece by the machine tool, workpiece data including information relating to the workpiece machined by the machine tool, jig data including information relating to the type of the jig, machining step data including information relating to machining steps implemented on the workpiece by the machine tool, and gripping force data including information relating to the gripping force exerted on the workpiece by the jig, and wherein
• the machine learning device comprises:
• a learning model storage unit that stores a learning model on which the machining state realized by the machine tool and the gripping state realized on the workpiece by the jig are associated with the suitability of the gripping force exerted on the workpiece by the jig;
• and
• an estimation unit that estimates the suitability of the gripping force exerted on the workpiece by the jig on the basis of the state data using the learning model stored in the learning model storage unit, and wherein
• the gripping force adjustment device further comprises a gripping force determination unit that retrieves the minimum workpiece gripping force that is estimated to be suitable by the estimation unit, and sets the retrieved workpiece gripping force as the gripping force to be exerted on the workpiece by the jig.

A gripping force adjustment device that adjusts a gripping force exerted on a workpiece by a jig for fixing the workpiece in a machine tool that machines the workpiece, comprising:

• a data acquisition unit that acquires at least data indicating a machining state realized by the machine tool and data relating to a gripping state realized on the workpiece by the jig;
• a pre-processing unit that creates data to be used in machine learning on the basis of the data acquired by the data acquisition unit;
• and
• a machine learning device that executes, on the basis of the data created by the pre-processing unit, machine learning processing relating to the gripping force exerted on the workpiece by the jig in the environment in which the machine tool machines the workpiece, wherein
• the pre-processing unit creates, as data to be used in an estimation executed by the machine learning device,
• state data including at least tool data including information relating to a tool used in the machining performed on the workpiece by the machine tool, machining condition data including information relating to machining conditions of the machining performed on the workpiece by the machine tool, workpiece data including information relating to the workpiece machined by the machine tool, jig data including information relating to the type of the jig, and machining step data including information relating to machining steps implemented on the workpiece by the machine tool, and wherein
• the machine learning device includes:
• a learning model storage unit that stores a learning model on which the machining state realized by the machine tool and the gripping state realized on the workpiece by the jig are associated with the gripping force exerted on the workpiece by the jig;
• and
• an estimation unit that estimates the gripping force exerted on the workpiece by the jig on the basis of the state data using the learning model stored in the learning model storage unit, and wherein
• the gripping force adjustment device further comprises a gripping force determination unit that determines the gripping force to be exerted on the workpiece by the jig on the basis of an estimation result acquired by the estimation unit.