Marine diesel engine crankshaft internal R polishing tool

The invention discloses a marine diesel engine crankshaft internal R polishing tool. The polishing tool comprises a tile clamping assembly, a bottom plate, a handle, a pneumatic grinding wheel machine, a radial feeding handle assembly, an axial feeding handle assembly and a sliding block, wherein the bottom plate is in a long strip shape, the front end of the bottom plate is directly connected with the annular tile clamping assembly, the rear portion of the top surface is fixedly connected with the handle through a bolt, a grinding wheel head at the front end of the pneumatic grinding wheel machine is inserted in an annular installing part of the tile clamping assembly in a penetrating mode, the middle front part of the pneumatic grinding wheel machine is connected with the bottom side ofthe bottom plate through the sliding block and the radial feeding handle assembly, and the middle rear part of the the pneumatic grinding wheel machine is connected with the bottom of the bottom platethrough the axial feeding