Weld line data generation device, welding system, weld line data generation method, and computer readable medium

A weld line data generation method for generating weld line data specifying a portion to be welded by a welding robot, comprising:

• a controller including circuitry, the circuitry configured to:
• extract a combination of two or more adjacent members from three dimensional data of a structure to be manufactured by welding;
• determine whether welding of a combination of configuration names corresponding to the extracted combination of two or more members is possible by referring to possibility information for each combination of configuration names prepared in advance;
• generate when a combination of configuration names corresponding to the extracted combination of two or more members is weldable, the weld line data specifying a portion to be welded between the two or more members corresponding to the combination;
• specify a configuration name of each member constituting the structure based on both or one of a shape of each member constituting the three-dimensional data and a positional relationship between members;
• calculate as a positional relationship between the two extracted members, at least one value of an inclination angle, a rotation angle, and a twist angle of the other member with respect to the one member, and specifying the other member as a non-welded member when the calculated value is equal to or greater than a threshold value;
• and
• welding the portion to be welded between the two or more members.

A non-transitory computer readable medium storing a program for causing a computer to execute:

• a process of extracting a combination of two or more adjacent members from three-dimensional data of a structure to be manufactured by welding;
• a process of determining whether welding of a combination of configuration names corresponding to the extracted combination of two or more members is possible by referring to possibility information for each combination of configuration names prepared in advance;
• and
• a process of generating, when a combination of configuration names corresponding to the extracted combination of two or more members is weldable, the weld line data specifying a portion to be welded between the two or more members corresponding to the combination;
• a process of specifying a configuration name of each member constituting the structure based on both or one of a shape of each member constituting the three-dimensional data and a positional relationship between members;
• and
• a process of calculating, as a positional relationship between the two extracted members, at least one value of an inclination angle, a rotation angle, and a twist angle of the other member with respect to the one member, and specifying the other member as a non-welded member when the calculated value is equal to or greater than a threshold value.