Positioning tool for accessory mold machining

The utility model discloses a positioning tool for accessory die machining, which comprises a positioning table, two cylinders located on the same horizontal straight line are fixedly arranged on the upper end face of the positioning table, telescopic cylinders connected in a sliding mode are arranged in the cylinders, expandable rods are arranged in the telescopic cylinders, and the expandable rods are connected with the positioning table. The two expandable rods move relatively through the air cylinder to clamp a mold; the expandable rod abuts against the inner end face of the cylinder to prevent the expandable rod from moving relative to the cylinder, and the telescopic cylinder sleeves the outer end face of the expandable rod through a telescopic transmission device and moves relative to the cylinder with the expandable rod under the action of the air cylinder. According to the device, the expansion characteristic of the expandable rod is used for resisting counter-acting force after clamping, and the ser