A method of ultra-precision cutting was used to ensure the concentricity,the spacing between the conductive ring and make sure the deformation of the insulated micro-groove less than 0. 10 mm. A grooving model of precision conductive slip ring was established to simulate and analyze the impact of spindle speed, feed rate, rake angle and depth of cut on the micro groove deformation, and the model was verified by experiments. The results showed that: the deformation of the slip ring increased with the rise of spindle speed, when the speed reached 700 r/ min, the deformation reached 0. 10 mm, which was out of the accuracy requirements; the deformation of the slip ring increased with the rise of feed rate, when the feed rate reached 1. 5 mm/ min, the deformation was out of the accuracy requirements; the deformation of the slip ring decreased with the rise of feed rate; the deformation of the slip ring increased with the rise of the depth of cut. , when the cutting depth was less than 0. 2 mm, the deformation became very little.