Device for milling allowance of S-shaped section frame edge

The utility model belongs to the field of aeronautical manufacturing technology assembly connection, and relates to a device for milling the margin of an S-shaped section frame. Comprising supporting frames and a base, the base is of a U-shaped structure, the two supporting frames are symmetrically distributed at the two ends of the U-shaped structure of the base, steel balls are arranged on the two end faces of the U-shaped structure and embedded into a retainer, and the retainer is connected with the base through screws; a fixed shaft is arranged on the support frame, the fixed shaft is in transition fit with an inner ring of the deep groove ball bearing, and an outer ring of the deep groove ball bearing is in transition fit with the roller. The problems that under the condition that no special allowance-removing milling clamp exists in a workshop, the frame edge is stressed unevenly, the milling process is unstable and the like due to the operation mode of manual cooperation with clamping and force applica