Boring and drilling composite-machining combined machine tool

The utility model discloses a boring and drilling composite-machining combined machine tool, comprising a tool body, a sliding platform, a power box, a main shaft box, a floating clamping head, a boring mold box and a clamp, wherein the boring mold box comprises a boring cutter rod, a front sealing cover, a boring mold frame, another boring cutter rod, a rear conical roller bearing, a rear sealing cover, a rear felt ring, a bearing pressing sleeve, a round nut, keys, another round nut, a connecting rod, a twist drill, a bush, a drilling sleeve, a planar bearing, a front conical bearing and a felt ring; the sliding platform and the clamp are respectively arranged on the tool body; the boring mold box and the power box are respectively arranged at the two sides of the platform surface of the sliding platform; the main shaft box is connected with the power box and is connected together with the boring mold box by the floating clamping head. The boring and drilling composite-machining combined machine tool disclo