Special fixture for high-precision numerical control machine tool

The invention relates to the technical field of machine manufacturing, in particular to a high-precision numerical control machine tool special clamp which comprises a base, a sliding rail, a clamping block, a driving assembly and a clamping assembly. The clamping assembly comprises a rotating base, an adjusting rod and a clamping plate, when the connecting part needing to be machined is very thin and the two clamping blocks are unstable in clamping, the two gaskets need to be used for supporting a workpiece, the adjusting rod is rotated, the adjusting rod can drive the clamping plate to move, the clamping plate slides out of the containing groove, a gap is formed between the clamping plate and the clamping faces of the clamping blocks, and therefore the workpiece can be clamped. The gasket is placed in the gap between the clamping plate and the clamping blocks, then the adjusting rod is adjusted to enable the clamping plate to clamp the gasket on the clamping blocks, at the moment, a workpiece is placed on t