To adopt usual way machining gear with small module and a few teeth, it is easy to emerge gear undercut, thus, it reduces the intensity of teeth and worsens the mesh condition.

按常规方式加工小模数少齿数齿轮，容易出现齿轮根切现象，致使齿轮轮齿强度降低、齿轮啮合条件恶化。

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To adopt usual way machining gear with small module and a few teeth, it is easy to emerge gear undercut, thus, it reduces the intensity of teeth and worsens the mesh condition.

按常规方式加工小模数少齿数齿轮，容易出现齿轮根切现象，致使齿轮轮齿强度降低、齿轮啮合条件恶化。

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