在未加工齿形前的齿轮毛坯称为齿坯。

根据齿坯形成的工艺不同，分为铸造齿坯，锻造齿坯和焊接齿坯。

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The gear blank before the unmachined tooth shape is called a tooth blank.

According to different processes of forming the tooth blank, it is divided into a cast tooth blank, a forged tooth blank and a welded tooth blank.