Key groove centering clamp

The utility model discloses a key groove centering clamp, which belongs to machining clamps and is suitable for processing key grooves through a general machine tool. The key groove centering clamp comprises a clamp base fixedly mounted on a workbench, a key groove formed in the center of the upper end surface of the clamp base, and a positioning core block mounted on the key groove. The key groove centering clamp also comprises a clamp body formed by combining two half V-shaped blocks, wherein the two half V-shaped blocks are symmetrically mounted on the two sides of the positioning core block on the clamp base and are fixedly connected through connecting bolts. The key groove centering clamp provided by the utility model has the benefits of reasonable structure, high centering precision, accurate and reliable positioning, high production efficiency and low rejection rate, is convenient for operation and assembly, can greatly improve the degree of symmetry of the key groove, and has the characteristic that t