Auxiliary device for drilling of electric hand drill

The utility model discloses an auxiliary device for the drilling of an electric hand drill. The auxiliary device comprises a positioning guiding support, an electric hand drill feed sliding frame and a lead screw with a handle, wherein the positioning guiding support is provided with a U-shaped support, a guide rail substrate which is fixedly connected with a cross beam of the U-shaped support and a pair of guide rails which is arranged on the guide rail substrate; one end of the U-shaped support is fixed with a workpiece; the lead screw passes through the other end of the U-shaped support and is in threaded connection with the other end of the U-shaped support; and the electric hand drill feed sliding frame is provided with a guiding mechanism which is connected with the guide rails in a sliding mode and is fixedly connected with the lead screw and is provided with an electric hand drill locking mechanism, so that the electric hand drill is fixed to the guiding mechanism. By the auxiliary device, the electri