The utility model relates to a clean composite
numerical control machine tool for gear
machining, which comprises a guide inclined plate for blanking, a guide inclined plate for blanking, a guide inclined plate for blanking and a guide inclined plate for blanking, a feeding inlet is formed in one end of the
metal scrap channel, a feeding outlet is formed in the other end of the
metal scrap channel, water filtering holes are formed in the bottom face, and a discharging guiding channel is arranged between the feeding inlet and the
tail end of the guiding inclined plate for discharging; the
scrap conveying mechanism is used for conveying
metal scraps in the metal scrap channel from the feeding inlet to the feeding outlet; the waste
chip compressing mechanism is used for receiving the metal waste chips output from the feeding outlet, compressing the metal waste chips and then outputting the metal waste chips; the metal scrap conveying device has the advantages that when metal scraps are conveyed in the metal scrap channel, most cooling water is filtered out by the water filtering holes, meanwhile,
extrusion type conveying of the feeding screw is adopted, on one hand, the size of the metal scraps can be preliminarily reduced, on the other hand, residual cooling water in the metal scraps can be extruded out, and finally
extrusion compression is conducted through the
hydraulic cylinder, so that the size is further reduced; and transfer and storage are convenient.