Universal optical coating tool clamp

The invention belongs to the technical field of tool clamps, and discloses a universal optical coating tool clamp which comprises a workbench, a plurality of guide grooves are formed in the circumferential direction of the workbench, and movable clamp bodies are arranged in the guide grooves; the rotary table is rotationally arranged in the middle of the lower surface of the workbench; the L-shaped connecting arms are in one-to-one correspondence with the clamp bodies, one ends of the L-shaped connecting arms are movably hinged to the clamp bodies on the corresponding sides, and the other ends of the L-shaped connecting arms are movably hinged to the corners of the rotary table corresponding to the other ends of the L-shaped connecting arms; the base end of the automatic telescopic piece is fixed to the lower surface of the workbench, and the movable end of the automatic telescopic piece extends along the diagonal line of the workbench to be fixedly connected with the clamp body on the opposite side. The devi