Drum type brake pad inner arc surface machining equipment

The invention relates to the technical field of brake pad machining, in particular to drum brake pad inner cambered surface machining equipment which comprises a base, a stepped feeding mechanism and two feeding and discharging belt mechanisms, the stepped feeding mechanism and the two feeding and discharging belt mechanisms are mounted on the base, the stepped feeding mechanism is located between the two feeding and discharging belt mechanisms, and an inner cambered surface grinding mechanism is further arranged on the base. The stepped feeding mechanism comprises a stepped pushing box horizontally assembled on the base in a sliding mode, the two opposite sides of the stepped pushing box are each provided with a servo clamping mechanism, the top of the stepped pushing box is provided with at least three steps in the sliding direction of the stepped pushing box, and the heights of the steps are reduced step by step, and the lengths of the steps are equal. The step is provided with a bearing face and a vertica