Steel member machining positioning mechanism

The utility model discloses a steel member machining positioning mechanism which comprises a base and four sets of vertical plates, threaded grooves are formed in the vertical plates, screw rods are arranged in the threaded grooves, clamping plates are fixedly arranged at one ends of the screw rods, two sets of cleaning mechanisms are arranged on the vertical plates, each cleaning mechanism comprises a cleaning assembly and a rotating assembly, and the rotating assemblies are arranged on the base. The cleaning assembly comprises a round brush, a bearing is arranged outside the round brush, and two sets of supporting rods are arranged on the bearing. Through the designed cleaning mechanism, spark splashes outside the screw rod can be conveniently cleaned in the using process, the influence of the spark splashes on the screw rod and the threaded groove when the screw rod is rotated is reduced, the service life of the screw rod is prolonged, and the using performance of the positioning clamp is improved. 本实用新型公开