Workpiece clamping mechanism for machine tool machining

The utility model discloses a machine tool machining workpiece clamping mechanism which comprises a clamping mechanism body and a sliding guide rail arranged in the middle of the upper end of the clamping mechanism body, a rear pressing block is arranged at the left end of the sliding guide rail, and supporting assemblies are arranged at the front end and the rear end of the upper side of the rear pressing block. And the supporting assembly comprises a connecting block, a damping rotating shaft and a rotating rod, the damping rotating shaft is arranged at the inner position of the upper end of the connecting block, and the rotating rod is arranged at the left end of the damping rotating shaft. The two rotating rods are pulled to rotate inwards around the damping rotating shafts in the upper ends of the connecting blocks, the arc-shaped plates at the upper ends of the rotating rods get close to each other to clamp the front side and the rear side of the workpiece, the damping rotating shafts have high damping