Milling positioning tool for motor iron core positioning block and processing method of positioning block

The invention relates to a milling positioning tool for a motor iron core positioning block and a machining method of the positioning block. The tool comprises a base, a gland, a positioning pin and a screw. The positioning boss of the gland is inserted into the annular groove in the base from top to bottom, the cutter passing groove B in the gland and the cutter passing groove A in the base are aligned one by one up and down, the two positioning pin holes in the gland and the two positioning pin holes in the base are aligned one by one, and insertion positioning fit is formed through a positioning pin. Screws are fastened in the screw penetrating holes in the gland and the gland mounting threaded holes in the base in a penetrating mode, so that the semi-finished circular ring of the part arranged in the annular groove of the base is fixedly pressed between the base and the gland in the mode that seven faces are positioned. The machining deformation of the part is greatly reduced, the machining efficiency of