Planetary gear shell machining device

The invention relates to the technical field of machining, and discloses a planetary gear shell machining device which comprises a base and a plurality of supporting seats arranged on the base in the circumferential direction, the supporting seats are provided with first moving assemblies used for driving limiting assemblies to move in the Z direction, and the first moving assemblies are provided with second moving assemblies used for driving the limiting assemblies to move in the X direction. The second moving assembly is provided with a limiting assembly used for limiting the planetary gear shell, the limiting assembly comprises a first limiting part and a second limiting part, and when the first limiting part abuts against the side wall of the planetary gear shell, the second limiting part moves in the X direction and abuts against the upper surface of the planetary gear shell; the base, the first limiting part and the second limiting part are matched to limit the planetary gear shell in the vertical direc