Automatic positioning mechanism of edge cutting machine

The utility model discloses an automatic positioning mechanism of an edge cutting machine, which relates to the technical field of automatic positioning of edge cutting machines and comprises an edge cutting base, positioning components are detachably mounted at the front end and the rear end of the top of the edge cutting base, and cutting components are detachably mounted on two sides of the top of the edge cutting base. A machining table is fixedly mounted in the center of the top of the edge cutting base, supporting legs are fixedly connected to the periphery of the bottom end of the edge cutting base, and the positioning assembly comprises a driving assembly and a clamping assembly. By arranging the lifting assembly, the edge cutting assembly can be conveniently driven to achieve height adjustment, an electric lifting column can make a U-shaped push-pull plate move up and down, the edge cutting assembly can be adjusted according to the thickness of a building formwork, a bidirectional motor is arranged t