Compressor shell machining device

The invention belongs to the technical field of compressor machining, and discloses a compressor shell machining device which comprises a supporting assembly, stabilizing assemblies are fixedly mounted at the left end and the right end of the top of the supporting assembly correspondingly, and lower mold assemblies are fixedly mounted on the inner sides of the two stabilizing assemblies correspondingly. After injection molding of the upper cover plate of the compressor is completed, an upper mold, a bearing plate and a transmission block are continuously pulled upwards through two air cylinders, the upper mold is separated from the tops of two lower molds, meanwhile, the exterior of the transmission block is separated from the interior of a pushing groove, two limiting blocks lose pushing force of the two transmission blocks, and four hydraulic rods reset to pull the two limiting blocks to the two ends; the two lower molds are pulled towards the two ends at the same time, the two first sliding blocks slide to