Analysis device, analysis method, and non-transitory computer readable medium recording an analysis program

An analysis method of analyzing a state of machining by a machine tool executed by a computer, the method executed by the computer comprising:

• a machine data collection step of collecting an aggregate of machine data output during operation of the machine tool;
• a measured data collection step of collecting an aggregate of measured data including measurement points where the size of a machined part machined by the machine tool has been measured by a measuring machine;
• a feature extraction step of, for each of the measurement points, (i) selecting machine data corresponding to the measurement point from the aggregate of the machine data and (ii) extracting the selected machine data as extracted machine data for the measurement point,
• wherein the feature extraction step includes calculating a plurality of feature quantities, each of the plurality of feature quantities being calculated based on a relationship between (i) a partial aggregate of the extracted machine data for each of the measurement points and (ii) measured data including measurement points corresponding to the partial aggregate of the machine data, and
• wherein the analysis method further comprises:
• a determination step of determining a factor for defective machining based on the plurality of feature quantities and thresholds individually set for each of the plurality of feature quantities;
• and
• an output step of outputting the determined factor for defective machining to a client terminal.

A non-transitory computer readable medium recording an analysis program for causing a computer to function as:

• a collection unit that collects (i) an aggregate of machine data output during operation of a machine tool and (ii) an aggregate of measured data including measurement points where the size of a machined part machined by the machine tool has been measured by a measuring machine;
• and
• a feature extraction unit that, for each of the measurement points, (i) selects machine data corresponding to the measurement point from the aggregate of the machine data and (ii) extracts the selected machine data as extracted machine data for the measurement point,
• wherein the feature extraction unit calculates a plurality of feature quantities, each of the plurality of feature quantities being calculated based on a relationship between (i) a partial aggregate of the extracted machine data for each of the measurement points and (ii) measured data including measurement points corresponding to the partial aggregate of the machine data, and
• wherein the analysis program further causes the computer to function as:
• a determination unit that determines a factor for defective machining based on the plurality of feature quantities and thresholds individually set for each of the plurality of feature quantities;
• and
• an output unit that outputs the determined factor for defective machining to a client terminal.