This machine sets tool is an automatic boring and welding integrated,which can b eoperated manually and remotely. It can repair and process the shaft holes and seat holes on the large and small arms of excavators.This machine sets can be clamped on the large and small arms of excavators for repair welding an dhole repair,temporarily fix the positioning cone on the hole position to be repaired,and automatically find the center position.The two processes of repair welding and hole can work alternately,just replace the boring bar and welding gun.