针对面齿轮硬齿面磨削加工中存在的困难，提出用蜗杆砂轮磨削的双参数法来磨削面齿轮。
Using a helical involute pinion surface to form the grinding worm surface, a helical face gear is formed via a two-parameter worm envelope.
结合面法向刚度大小的参数对纵向振动模态的影响比对弯曲、扭振模态的影响显著；
The parameters reflecting normal stiffness have more obvious effects on extensional vibration mode than those on flexural mode and torsion mode.
该法提高了测量的准确度和精度，该系统能够精确地测量出等距型面轴的评价参数。
The measuring accuracy and precision are improved, and the evaluation parameters of the isometric polygonal shaft can be measured accurately by the new system.
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