The invention provides a stamping and welding axle housing machining technology, and relates to the technical field of heavy-truck axle housing machining technologies. The stamping and welding axle housing machining technology includes the steps of 1, putting a raw axle housing; 2, levelling an end face chamfer; 3, conducting coarse-fine treatment on a vehicle axle housing spindle head and flangeouter-circle end faces at all levels, and cutting threads; 4, conducting coarse-fine milling on end faces, conducting coarse-fine boring on inner holes, drilling holes in a disc face, tapping the discface, and conducting coarse-fine boring on through-shaft inner holes and end faces at all levels; 5, polishing an outer circle; 6, milling keyways; 7, conducting cleaning; 8, carrying out final inspection; 9, putting a product in storage. The step 4 is a machining technology based on a horizontal machining center. By the stamping and welding axle housing machining technology, the implantation andapplication of an axle housing machining integrated technology in homemade complete machining equipment are achieved for the first time, optimal distribution of machining tasks in a flexible production line is achieved, the machining efficiency of a cluster machining system is improved, a heavy-truck axle housing flexible machining technology is improved, and the application and popularization ofhomemade high-grade numerically-controlled machine tools in heavy-truck axle housing production lines are promoted.