A flash removal device includes a frame, a first servo motor, a bottom plate, an adapter shaft, a shaft sleeve, a radial bearing, a lower end cover, a pedestal, a pressure bearing, a base, a clamping cylinder, connecting plates, first guide rail sliding seats, first linear guide rails, mounting racks, rotary press-down cylinders, first sleeves, first bearings, first rotating shafts, a first gland, clamping rollers, etc. The flash removal device can meet the requirements of flash removal from a wheel blank, has the characteristics of simple structure, stable detection performance, high positioning precision, simple operation and the like, and is very suitable for automatic batch production.