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The regularity of the through-feed superfinishing of the taper roller is considered, the radial contact arc length between a oilstone and a roller is calculated, the model of superfinishing dynamic valid cutting edge numbers is built, the influence of key parameters to radial contact arc length and dynamic valid cutting edge numbers is analyzed. The result is given as follows. The two parameters that keep the greatest influence on the arc length and the cutting edge numbers are the roller diameter and the cutting surface depth of the oilstone. With increase of the two parameters in the big end of the roller, the arc length and the cutting edge numbers increase rapidly. The roller generatrix can be machined into perfect crown shape by changing cutting surface depth reasonably and controlling the distribution of dynamic valid cutting edge along the axial direction.

Contact Characteristics Analysis of Taper Rollers and Oilstones in Through-feed Superfinishing