Work management apparatus, work management method, and work management system

A work management method that manages a tightening work for tightening each of a plurality of fastening parts included in a product using a tool equipped with a torque sensor capable of detecting a tightening torque for tightening the fastening parts acting on the bit and a first and second markers for image processing,

• wherein the torque sensor starts measurement of the tightening torque when the detected tightening torque exceeds a set threshold, ends the measurement of the tightening torque when the measurement data satisfies a predetermined condition, and outputs torque-related data including a measurement time based on the measurement data between start of the measurement and end of the measurement;
• the method comprising:
• capturing images of the product with first and second cameras from different observation points;
• receiving the torque-related data output from the torque sensor;
• calculating the coordinates of the engagement position of the bit that engages with the fastening part from the plurality of image data of the tool corresponding to the measurement time included in the torque-related data received, and including an image of the first and second markers captured by the first and second cameras during the tightening work of the fastening part;
• and
• mounting to the bit a marker mounting device provided with the first and second markers and removably mountable to the bit.

A work management apparatus for managing a tightening work for tightening each of a plurality of fastening parts included in a product using a tool provided with a torque sensor capable of detecting a tightening torque for tightening the fastening parts acting on the bit and a first and second markers for image processing,

• wherein the torque sensor starts measurement of the tightening torque when the detected tightening torque exceeds a set threshold and ends the measurement of the tightening torque when the measurement data satisfies a predetermined condition, and outputs torque-related data including a measurement time based on the measurement data between start of the measurement and end of the measurement,
• the apparatus comprising a coordinate calculating unit that calculates coordinates of the engagement position of the bit, based on a plurality of image data of the tool corresponding to the measurement time included in the torque-related data received and including the image of the first and second markers captured by first and second cameras during the tightening work of the fastening part, or, based on a two-dimensional coordinates data of the first and second markers extracted from the image data captured by the first camera and a two-dimensional coordinate of the first and second markers extracted from the image data captured by the second camera,
• wherein the first and second markers are provided on a marker mounting device removably mounted on the bit.