Center lathe drilling integration rapid conversion device

The utility model discloses a center lathe drilling integration fast conversion device which comprises a taper shank, a supporting block, a rotating disc, an expansion tool, an eccentric fastening handle, a steel ball and a spring, the right end of the taper shank is connected with the side plane of the left end of the supporting block in a rivet welding mode, the whole supporting block is a 45-degree conical body and is provided with a 45-degree plane, and the 45-degree plane is connected with the bottom face of the rotating disc; four installation positions for expansion tools are arranged on the side face of a cone frustum on the upper portion of the rotating disc, and the upper portion of the rotating disc is connected with an eccentric fastening handle. Different tools can be rapidly switched, drilling, tapping, chamfering and other operations can be completed through single-process single-time clamping, one-time clamping and rapid switching of a center drill, a drill bit and a screw tap can be rapidly a