Cylinder liner combined machining machine tool

The invention relates to a cylinder liner combined machining machine tool. The machine tool comprises a machine tool body, wherein a motor device, an apron driving device, a tailstock driving device and three sets of guide rails are installed on the machine tool body, an upper apron is installed on the upper set of guide rails, an external turning tool is installed on the upper apron, a down-cutting device is installed on the lower set of guide rails, a facing tool set is installed on the down-cutting device, a headstock and a double-station complex programming tailstock are installed on the main guide rails in the middle, a headstock spindle is driven by the motor device to rotate, a boring tool and an expansion combination device are installed at the front end of the headstock spindle, a material pushing device is installed on the top of the headstock, and the double-station complex programming tailstock is a tailstock device which is provided with a telescopic hydraulic chuck mechanism and a hydraulic center mechanism at the same time. According to the cylinder liner combined machining machine tool, the machining efficiency and the accuracy of cylinder liners can be greatly improved; a production unit can formed when an automatic feeding and discharging device is further arranged so that automatic production can be achieved, the production cost can be greatly reduced, the productivity of enterprises can be improved, and the cylinder liner combined machining machine tool is particularly applicable to mass production of cylinder liners.