Grinding tool for chromium layer and base body of front pivot pin of main landing gear of B737NG model

The utility model discloses a grinding tool for a chromium layer and a base body of a front pivot pin of a main landing gear of a B737NG model. The grinding tool comprises a plane grinding wheel, a cambered surface grinding wheel, a top clamping assembly and a grinding wheel dressing assembly. The side face of the plane grinding wheel is a plane, the side face of the cambered surface grinding wheel is provided with an annular groove, the groove wall of the annular groove is a cambered surface, the top clamping assembly comprises a first top clamping piece and a second top clamping piece, the tail end of the first top clamping piece and the tail end of the second top clamping piece are each provided with a fixing part, the front end of the first top clamping piece is provided with a conical head, and the front end of the second top clamping piece is provided with a cylindrical head. The grinding wheel dressing assembly comprises a clamping support and a diamond pen, and the diamond pen is fixed to external cyl