Drilling and clamping device for railway turnout flat backing plate

The utility model provides a drilling and clamping device for a railway turnout flat backing plate. The drilling and clamping device for the railway turnout flat backing plate comprises a base plate, wherein a supporting part for supporting a railway turnout flat backing plate blank is formed on the upper surface of the base plate; a positioning piece is fixedly arranged on the base plate; one or two datum lateral surfaces are arranged on the positioning piece and are perpendicular to a horizontal plane and parallel to the longitudinal central axis of the base plate; an end plate for positioning the railway turnout flat backing plate blank in the direction of the longitudinal central axis is fixedly arranged on the base plate; a hole or a groove is formed in the top surface of the positioning piece; a connecting member is embedded in the hole wall or the groove wall of the hole or groove; an adjusting bolt is screwed in the connecting member; a pressing plate is arranged in the adjusting bolt in a penetrating way; the top end of the adjusting bolt is a screwing end; and a stopping part for stopping the pressing plate is formed on the lateral surface of the adjusting bolt. According to the drilling and clamping device for the railway turnout flat backing plate, the drilling processing for a plurality of railway turnout flat backing plate blanks is simultaneously realized and the production efficiency is increased.