Angle rotation subdivision device of boring and milling machine

An angle rotation subdivision device of a boring and milling machine comprises a mandrel, wherein a working table is fixedly connected to the mandrel. The angle rotation subdivision device is characterized in that a box body is arranged outside the mandrel; an intermediate shaft base is fixedly installed in the box body; a large worm wheel is arranged below the mandrel and engaged and connected with a worm wheel shaft; the worm wheel shaft is connected with a motor through a gear mechanism; an inner-toothed gear base is fixedly connected above the mandrel; an inner-toothed gear is fixedly connected to the inner-toothed gear base; a small gear penetrating an intermediate gear shaft is engaged with the inner-tooth gear; an intermediate gear shaft is fixed to the intermediate shaft base; an intermediate gear is further connected to and installed on the intermediate gear shaft and engaged with an encoder gear; and the encoder gear is fixedly connected with an encoder through a coupler. 镗铣床角度回转细分装置，包括芯轴,芯轴上固定连接有工作