Drilling device for blind hole in inner wall side of workpiece

The utility model discloses a drilling device for a blind hole on the inner wall side of a workpiece, which comprises a motor mounted on a bottom plate, the motor drives a drill bit to process a blind hole on the inner wall of the workpiece through a speed reducing mechanism, and a sliding limiting mechanism comprising a first base plate and a second base plate, the first base plate is fixed to the bottom plate and arranged opposite to the side of the workpiece, the second base plate is mounted on the bottom plate, the upper portion of the second base plate is movably clamped in a cavity in the inner wall of the workpiece, one end of the drill bit penetrates through the second base plate and is close to the inner wall of the workpiece, and the workpiece horizontally slides towards the first base plate along the side of the second base plate to complete side blind hole machining. According to the device, the sliding limiting mechanism is designed, the workpiece is reversely placed, the drilling depth is fed by