Magnetic particle flaw detector for multi-specification bearing rings

The invention relates to the technical field of flaw detection machines, in particular to a magnetic particle flaw detection machine for bearing rings of multiple specifications, which comprises a rack, a fixed U-shaped magnet yoke, a movable main magnet yoke penetrating rod and a movable small magnet yoke penetrating rod are respectively arranged above the rack and can move independently and transversely, and the U-shaped magnet yoke, the movable main magnet yoke penetrating rod and the movable small magnet yoke penetrating rod are arranged on the rack. The main magnet yoke penetrating rod and the small magnet yoke penetrating rod are installed on a longitudinal sliding table driven by a third driving mechanism and can form a closed loop with the U-shaped magnet yoke, a carrier roller mechanism is further arranged on the rack and comprises two carrier rollers with adjustable positions, the carrier rollers are used for supporting a bearing ring, and the carrier rollers are used for supporting the bearing ring