Method for judging machining accuracy and learning method of decision model

摘要

Problem to be solved: to provide a method of judging the machining accuracy by improving the accuracy of judgment of machining accuracy by plastic working.A method of determining a machining accuracy by a machining apparatus for repeating plastic working to a workpiece using a tool isChange of load on tool during plastic workingOr, the step of obtaining a load curve indicating the change by the distance to which the tool movesIn order to obtain an acoustic form which shows the time change of the size of the sound generated in the vicinity of the processing point where the tool acts on the work piece during plastic processing, andCalculating the amount of features based on the obtained load curve and sound form, andDecision model to determine machining accuracyThe characteristic curve calculated from the load curve and the sound form is input.The step of outputting a determination value of the index indicating the machining accuracy is included.The decision model is generated by machine learning based on the measured value of the index indicating the machining accuracy, the load curve acquired at the time of the measurement of the measured value, and the feature quantity calculated from the sound wave form.Diagram