Resistance spot welding system including a master robot and at least one slave robot

摘要

A spot welding system (10) including first (12a) and second (12b) spot welding robots, and a communication line (14) connecting the first (12a) and second (12b) spot welding robots with each other so as to permit communication therebetween. The first spot welding robot (12a) includes a data transmitting section (18) for transmitting welding data defining welding operations of the first (12a) and second (12b) spot welding robots through the communication line (14) to the second spot welding robot (12b), and a first control section (20) for causing the first spot welding robot (12a) to perform a welding operation based on the welding data. The second spot welding robot (12b) includes a data receiving section (22) for receiving the welding data transmitted from the data transmitting section (18) of the first spot welding robot (12a) through the communication line (14), and a second control section (24) for causing the second spot welding robot (12b) to perform a welding operation based on the welding data received by the data receiving section (22). The welding data may include welding condition data defining welding conditions under which the first and second spot welding robots (12a,12b) perform the welding operations.