Surface polishing equipment for flange machining

The surface polishing equipment for flange machining comprises a bottom plate, conveying shafts penetrate through and are rotationally connected to the top positions of the front ends and the rear ends of four stand columns, a push plate is fixedly connected to the left side position of a second telescopic rod, and first air cylinders penetrate through and are fixedly connected to the top positions of two second fixing blocks; a first telescopic rod is arranged at the top positions of the two first air cylinders in a penetrating mode, and polishing rollers are fixedly connected to the middle positions of the outer diameters of the two polishing shafts. According to the automatic feeding device, a second motor drives a conveying shaft and a conveying roller to rotate, the conveying roller drives a conveying belt and a flange to move forwards and enter a supporting plate through a feeding port, a second air cylinder drives a second telescopic rod and a push plate to move leftwards, the push plate pushes the fla