By using hyperbolas to fit axial curves, considering the maximal error of the fitting curves as the objective function, the optimal fitting hyperb.

• 通过双曲线来拟合齿向曲线,使拟合曲线的最大误差为目标函数,利用优化的方法,使最大误差最小,得到最优的拟合双曲线,从而加工出所需要的齿形。