Slotting process used to achieve modify heavy-loading mine gear.According to the pitch circle radius of gear tooth profile modification is difficult to accurately draw, reverse-designed the profile of the modification slotting cutter fold may occur on the cusp, generating simulation for slotting profile modification is implemented using MATLAB based on engagement theory of slotting process,which can test whether the pitch circle is set to reasonable, to avoid resulting the top or root of conjugate gear’s profiles be cut,achieved t...