2F L Litvin, A Fuentes. Gear geometry and applied theory[ M]. London: Cambridge University Press, 2004.
3D P Townsend. Dudley' s gear handbook the design, manufacture and application of gears [ M ]. McGraw-Hill, New York, 1992.
4M Tsai, Y Tsai. Design of high contact ratio spur gears using quadratic parametric tooth profiles[J]. Mechanism and Machine Theory, 1998,33(5) :551 - 564.
5AGMA 2101 - C95. Fundamental rating factors and calculation methods for involute spur and helical gear (Metric version) [S]. American Gear Manufacturers Association, 1995.
