Combined grinding wheel device for grinding slewing bearing

The combined grinding wheel device comprises a grinding wheel shaft, a grinding wheel shaft seat, a radial grinding wheel unit, an axial grinding wheel unit and a grinding wheel shaft connecting and locking unit from top to bottom, the grinding wheel shaft is arranged in the center of the grinding wheel shaft seat, the radial grinding wheel unit is arranged in the outer diameter direction of the grinding wheel shaft seat, the axial grinding wheel unit is arranged below the grinding wheel shaft seat, and the axial grinding wheel unit is connected to the grinding wheel shaft seat through the grinding wheel shaft connecting and locking unit. The machining function of the turning and grinding all-in-one machine is guaranteed, and axial and radial grinding is achieved by changing a grinding wheel clamping part; automatic grinding and finishing of surfaces such as end faces, steps, axial raceways and radial raceways can be completed through one-time clamping on the machining function; and the rotary bearing grindin