The invention discloses an automatic
robot welding auxiliary tool, and belongs to the technical field of
welding auxiliary tools. The automatic
robot welding auxiliary tool comprises a
workbench, and further comprises a mounting frame, a cylinder, a sliding rod, a first sliding block and a second sliding block, wherein the mounting frame is fixedly connected to the
workbench, the cylinder is connected to the mounting frame, one end of the sliding rod is fixedly connected to the cylinder, the first sliding block slides on the sliding rod, and the second sliding block is fixedly connected to the
tail end of the sliding rod. According to the automatic
robot welding auxiliary tool, the first sliding block drives a connecting rod to change the angle between the connecting rod and the sliding rod, then the distance between an arc-shaped plate and the sliding rod is changed, so that the automatic
robot welding auxiliary tool is suitable for tubular parts with different inner circle diameters, the tubular parts are rapidly fixed, and time and labor are saved; meanwhile, a plurality of tools do not need to be manufactured, so that the cost expenditure is saved; and meanwhile, a double-shaft motor is used for driving the cylinder to rotate, then the tubular parts are driven to rotate, and welding is more convenient.