Quality estimation device, quality estimation method, and quality estimation program

A quality estimation method causing a computer to execute operations comprising:

• acquiring first information pertaining to a positioning of a worker executing a work step included in a process for manufacturing a product on a production line;
• acquiring second information pertaining to a usage condition of a tool the worker uses in the work step;
• estimating quality of a product being made through the work step according to a degree to which the positioning of the worker represented by the acquired first information an upper threshold associated with a distance between a head of the worker and the tool and a lower threshold associated with the distance between the head of the worker and the tool, and a degree to which the usage condition of the tool represented by the acquired second information conforms to a predetermined second standard comprising an upper threshold associated with an angle of the tool relative to a hand of the worker holding the tool and a lower threshold associated with the angle of the tool relative to the hand of the worker holding the tool;
• and
• outputting information pertaining to a result of estimating the quality of the product.

A non-transitory computer-readable storage medium storing a quality estimation program, which when read and executed, causes a computer to perform operations comprising:

• acquiring first information pertaining to a positioning of a worker executing a work step included in a process for manufacturing a product on a production line;
• acquiring second information pertaining to a usage condition of a tool the worker uses in the work step;
• estimating quality of a product being made through the work step according to a degree to which the positioning of the worker represented by the acquired first information an upper threshold associated with a distance between a head of the worker and the tool and a lower threshold associated with the distance between the head of the worker and the tool, and a degree to which the usage condition of the tool represented by the acquired second information conforms to a predetermined second standard comprising an upper threshold associated with an angle of the tool relative to a hand of the worker holding the tool and a lower threshold associated with the angle of the tool relative to the hand of the worker holding the tooll;
• and
• outputting information pertaining to a result of estimating the quality of the product.