Parametric Coordination and Simulation Study on Nonstandard Spur Gears

This paper presents the parametric collaborative rules of nonstandard spur gear in order to improve the bending strength. For numerical work, equation between fillet radius and pressure angle is established according to the gearing theory. Also, the mechanism of action that pressure angle, fillet radius and addendum coefficient have on the bending strength is investigated. So it is shown how pressure angle, fillet radius and addendum coefficient affect the bending strength. Based on that, coordinated figures among the gear parameters and the collaborative design for stronger bending strength of nonstandard spur gears are proposed. Furthermore, bending stress of gears with different parameters are simulated and compared with the theoretical computing values to support the conclusion.