Automatic interior polishing device of H-shaped wheels

The invention relates to an automatic interior polishing device of H-shaped wheels. The automatic interior polishing device comprises a machine frame, grinding devices and a locating device; the locating device comprises a locating bottom plate, a support, locating wheels and pressing wheels, the locating bottom plate is arranged on a locating rail in the middle of the machine frame and is fixedly connected to a feeding air cylinder arranged on one side of the machine frame, the support and the locating wheels are arranged on the locating bottom plate, the pressing wheels are arranged above the locating wheels and are connected to the support through a pressing air cylinder, and the locating wheels are connected to a drive motor arranged on the lower side of the machine frame through belts; and the grinding devices comprise grinding bottom plates, the grinding bottom plates are arranged on grinding rails located on two sides of the locating rail on the machine frame and are connected to reciprocating air cylinders arranged on the machine frame, and grinding head motors are fixed to the grinding bottom plates. The automatic interior polishing device of the H-shaped wheels can automatically grind the interiors of work-pieces, the grinding efficiency is high, and the grinding quality can be guaranteed.