此外，蜗杆的蜗杆槽深度随压力的增高而减少，在排气结束，星轮齿脱离单槽时，深度为零，故不存在余隙容积。

In addition, the worm and worm groove depth of the pressure increased, in the end, reduce exhaust gate-rotor from the single slot, depth is zero, it does not exist.

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利用轮齿接触分析与齿轮啮合原理，建立了齿面均匀研磨与定点研磨控制的几何运动模型，经滚检检验，该模型能对齿面研磨位置与侧隙进行较准确的控制。

The rolling tests prove that this setup model can control precisely the displacement of the lapped area in the tooth surface and keep the even backlash.

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