Arc Welding Robot

An arc welding robot which operates with a predetermined operation pattern by an operation program taught in advance, and welds a workpiece under predetermined welding conditions set in advance for each predetermined period in the operation pattern, comprising:

• storage means for storing at least measurement data as history information, wherein the measurement data includes at least one of a welding current command value, an average value of a welding current output, a welding voltage command value, an average value of a welding voltage output, a wire feed rate, a short-circuiting frequency, a feed motor current, and a welding error, all during the predetermined period.

An arc welding robot which operates with a predetermined operation pattern by an operation program taught in advance, and welds a workpiece under predetermined welding conditions set in advance for each predetermined period in the operation pattern, comprising:

• storage means for storing at least measurement data as history information, wherein the measurement data includes a determination result in which a determination is made as to whether or not at least one of an average value of a welding current output, an average value of a welding voltage output, a short-circuiting frequency, and a feed motor current, all during a predetermined period, falls within a predetermined range set in advance.

An arc welding robot which operates with a predetermined operation pattern by an operation program taught in advance, and welds a workpiece under predetermined welding conditions set in advance for each predetermined period in the operation pattern, comprising:

• storage means for storing as history information at least one of a program name, a welding portion, and measurement data at the time of execution of the operation program, wherein a timing at which the storage means stores the history information can be selected from either the time of a change of all welding conditions or the time of occurrence of an abnormality.

An arc welding robot which operates with a predetermined operation pattern by an operation program taught in advance, and welds a workpiece under predetermined welding conditions set in advance for each predetermined period in the operation pattern, comprising:

• storage means for storing as history information at least one of a program name, a welding portion, and measurement data at the time of execution of the operation program, wherein the stored history information can be transferred to an external memory.