Welding machine doing circular motion

The invention relates to a welding machine doing circular motion, and belongs to the technical field of lithium argon battery manufacturing. The welding machine comprises a welding gun bottom frame, a fixed plate arranged on the welding gun bottom frame and a stepping motor fixed to the bottom of the fixed plate. An output shaft of the stepping motor penetrates through the fixed plate to be connected with the bottom of an R adjusting device, the top of the R adjusting device is connected with a spherical bearing, the spherical bearing is hinged to one end of a connecting rod, and the other end of the connecting rod is fixed to an adjustable connecting plate. The adjustable connecting plate is in sliding connection with an X-direction sliding rail, the bottom of the X-direction sliding rail is in sliding connection with two parallel Y-direction sliding rails through connecting blocks, the end of the X-direction sliding rail is connected with a welding gun seat, and a welding gun is fixed to the welding gun seat. The welding gun is driven by the motor to do circular motion, the rotating precision of the welding gun can be guaranteed, a processed battery is clamped and fixed by a clamp pushed by an air cylinder, the battery is clamped by the air cylinder, precision is greatly improved, and almost no displacement is generated.