Motive power device of tool

The utility model relates to a motive power device of a tool. The motive power device of the tool comprises a pedestal and a sliding plate which is mounted on the pedestal and can move in a front-back mode. A motive power support base is fixedly mounted on the sliding plate. A motive power tool holder is mounted at the front end of the motive power support base. The motive power tool holder is connected with a motor through a coupling and a speed reducer. The motive power device of the tool can be mounted on a two axis numerical control lathe (especially a large size two axis numerical control lathe ), provide motive power for a rotating tool, complete functions of drilling, tapping, milling and the like, achieve the fact of one machine with multi-functions, greatly improve lathe performance and processing efficiency, reduce equipment investment, and thereby bring certain economic benefits and social benefits for mechanical manufacturing industry. At the same time, the tool can be in a working or retracting position pushed by an oil cylinder, interference with a main tool frame is avoided, and full play of original functions of a machine tool is guaranteed. An international standard tool interface is adopted, various kinds of standard motive power tool holders such as axial, radial and corner motive power tool holders can be mounted, and the use is extensive.