Special-shaped contour part machining tool and using method thereof

The special-shaped outline part machining tool comprises a tool body, the tool body is composed of a clamping base body, a press-fitting mechanism, a positioning mechanism and a profiling boss, and the press-fitting mechanism, the positioning mechanism and the profiling boss are detachably installed on the clamping base body, so that the tool body has a first machining state and a second machining state; the clamping base body comprises a cuboid base, fixing mechanisms used for installing the base on an equipment workbench are symmetrically installed on the two end faces in the width direction of the base, when the clamping base body is in a first machining state, a press-fitting mechanism and a positioning mechanism are installed on the clamping base body, and when the clamping base body is in a second machining state, the press-fitting mechanism and the positioning mechanism are installed on the clamping base body. A profiling boss matched with a finished part in shape is installed on the upper surface of t