Drilling and tapping dual-purpose drilling machine with high machining precision for precision mechanical engineering

The high-machining-precision drilling and tapping dual-purpose drilling machine comprises an adjusting box, first motors are fixedly installed at the upper ends of the two sides of the adjusting box, and a working box is fixedly installed at the top of an inner cavity of the adjusting box. A threaded rod is fixedly installed at the output end of the first motor and located in an inner cavity of the working box, and a threaded sleeve is installed on the front surface of the threaded rod in a threaded mode. Through the arrangement of a first motor, a threaded rod and a threaded sleeve, the effect of adjusting the height of a connecting plate is achieved, through the arrangement of a transverse plate, a light plate and a sliding ring, the effect of adjusting the height of a second motor is achieved, and through the arrangement of a drill bit, the effect of machining objects needing to be machined is achieved; according to the clamping and fixing device, the effect of clamping and fixing objects needing to be mac