Washing bed, grinder, thread cutting, lathe.

洗床，磨制机床，线割切，车床。

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There are generally three methods of thread cutting feed:straight cutting method, oblique cutting method and both sides cutting method.

螺纹切削的进刀方法一般有三种：直进法、斜进法和左右切削法。

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The resumption of thread cutting of using G38+ function which provided by NUM numeral control system was firstly carry out in our country.

在国内首次使用NUM数控系统提供的G38+功能，实现螺纹重复切削。

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