Multifunction machining device of pipe fittings

The invention discloses a multifunctional machining device of pipe fittings. The multifunctional machining device comprises a body, a supporting plate, a feeding opening, a discharging opening, a translation air cylinder, a piston rod, a workbench, a grinding motor, a polishing motor, a driving wheel, a driving belt, a mounting shelf, sand wheels, polishing wheels, the pipe fittings, a press wheel, a suspension rod, a limiting connector, a locking part, a mounting plate, an end plate, a movable connecting part, a rotary cylinder, a rotary motor and a material collecting tank. The multifunctional machining device is compact in structure and convenient to use, grinding and polishing of workpieces are integrated, in the machining process, rough parts of the pipe fittings can be ground according to machining requirements, polishing work is facilitated, the time and labor are effectively saved, the machining procedures are reduced, and the production efficiency is improved; meanwhile, in the machining process, the