Gear milling tool for split straight bevel gear

The utility model discloses a gear milling tool for a split straight bevel gear. The gear milling tool comprises a clamp body, an inner positioning ring, a hook-shaped rotary positioning block, a hook head pressing plate, a tension bolt, a compression spring and a double-side wedge-shaped push rod, the inner positioning ring is fixed to the rear end of the upper surface of the clamp body and used for being attached to the inner diameter side face of the split straight bevel gear blank. One end of the draw-in bolt movably penetrates through a boss on the lower surface of the clamp body, the other end of the draw-in bolt is connected with the double-side wedge-shaped push rod, the compression spring is sleeved on the draw-in bolt, and one end of the draw-in bolt is in threaded connection with an adjusting nut abutting against the boss. The hook-shaped rotary positioning blocks are symmetrically and rotationally mounted on the upper surface of the clamp body, and pin shafts are arranged at the rear ends of the h