Outer burnishing machine of numerical control elbow

The utility model discloses an outer burnishing machine of numerical control elbow, include: Z axis stepper motor, the step motor connecting seat, the chassis, the support, the optical axis, the slide balancing stand, go up the work or material rest, the material loading pulley, Z axle ball screw, the rope, the weight, including a motor, an end cap, a controller, and a cover plate, the motor belt dish, the connecting rod, the drive sprocket axle, the action wheel, first gear, the second gear, the main shaft, clipping material cylinder, anchor clamps, the gland, main shaft bearing, the discharge gate, the turbine, the worm, the tight pulley rises, the regulating wheel, the type B belt, the abrasive band, X axis stepper motor, X axle reducing gear box and material loading cylinder, Z axis stepper motor drives Z axle ball screw, clipping material cylinder makes the work piece internal surface of anchor clamps on to last work or material rest press from both sides tightly, the motor drives motor belt commentariess on classics of spiraling, and the second gear is connected to the pullery, and the second top circle passes through the bearing to be fixed on the base, the action wheel in a gear connection sand ribbon, action wheel drive four from the driving wheel, install two sets of abrasive bands on the pullery for polish workpiece surface.