Anti-pinch-damage machine tool clamp

The utility model discloses an anti-pinch-damage machine tool clamp, which relates to the technical field of clamps and comprises a clamp body, double-acting clamping mechanisms are arranged at four corners inside the clamp body, and each double-acting clamping mechanism comprises a bidirectional screw rod, a first clamping plate, a second clamping plate and a gear. The adjustable double-acting clamping mechanisms are arranged at the four corners in the clamp body, under the action of each set of bidirectional lead screw, the four sets of first clamping plates are located on the inner side of the circular ring workpiece for inner supporting type clamping and fixing, and the four sets of second clamping plates are located on the outer side of the circular ring workpiece for contracting type clamping and fixing; according to the clamping device, the first clamping plates and the second clamping plates are arranged, so that the circular ring workpiece is clamped more stably under the matching action of the first