MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR MANUFACTURING A JOINED PIECE

A manufacturing method for joining first and second members to create a joined piece using a robot with pre-inputted instruction data. The method includes operating the robot to hold the second member for joining to the first member and photographing the second member to obtain an image of the second member at the holding position; comparing the image to a reference image of a joining position of a reference second member joined to a reference first member; determining a deviation amount by which the holding position of the second member deviates from the joining position in the reference image; determining a correction amount for correcting the holding position of the second member is to be corrected in order to reduce the deviation amount of the holding position of the second member; correcting the holding position of the second member according to the correction amount, and then subsequently joining the first and second members.