High-stability workpiece positioning part for numerical control gantry drilling and milling machine

The utility model relates to the technical field of workpiece positioning parts for numerical control gantry drilling and milling machines, and discloses a high-stability workpiece positioning part for a numerical control gantry drilling and milling machine. The connecting base plate is arranged on the fixed base plate, the connecting base plate comprises a driving part arranged on the middle section of the fixed base plate, the driving part is connected with a traction part, and the traction part is connected with a positioning part; the rotating driving gear drives an engaged limiting rack plate to move, the moving limiting rack plate slides on the inner wall of the limiting frame, a limiting sliding block fixedly connected to the left end of the limiting rack plate is driven to slide on the inner wall of the limiting frame, and a positioning clamping jaw fixedly installed at the bottom of the limiting sliding block moves; and elastic blocks are fixedly connected to the inner walls of the positioning clampi