Dividing spindle servo gear for processing heavy type shaft parts

The utility model relates to a dividing spindle servo mechanism used for processing heavy shaft parts. The servo mechanism consists of a driving rotary table (1), a hydraulic floating support (2), a centre frame (3) and a tail seat (4), wherein, the driving rotary table (1) and the tail seat (4) are supported at the two ends of a workpiece (5), and the hydraulic floating support (2) and the centre frame (3) are supported at the lower end of the workpiece (5). The positioning accuracy of the servo mechanism is high, and the bearing of the rotary driving torque of the complete mechanism is huge, therefore, the utility model is very suitable for processing heavy shaft parts; the cost can be effectively reduced; and compared with the prior common dividing spindle servo mechanism, the utility model has the advantages of high efficiency, large driving torque and good supporting rigidity.