Fine boring machine for tooth cavity of shell of external gear pump

The external gear pump shell tooth cavity fine boring machine comprises a machine tool body, and spindle boxes are arranged at the two ends of the machine tool body; a positioning mechanism is arranged between the two spindle boxes and comprises a sliding rail, the sliding rail is arranged between the two spindle boxes, and the sliding rail is parallel to spindles of the spindle boxes; the sliding rail is movably connected with a sliding table, and the sliding table is fixedly provided with a clamp. The main shaft is provided with a boring cutter, and the clamp clamps a gear pump shell to be machined. The main shafts at the two ends of the machine tool body are arranged in a paired mode, and the distance between the axes of the paired main shafts is equal to the set distance between the centers of the two tooth cavities of the gear pump shell. According to the description of the scheme, the fine boring machine has the beneficial effects that the structure is simple, the design is reasonable, the processing ef