我厂生产的飞龙牌速滑刀后托是比较典型的锥体拉伸件(图1),前后经过落料、拉伸、校形、修边、开口切底、翻边、合口终整形等九道工序来完成。开口切底工序是其中一个中间工序。本文仅就这道工序,介绍一下我们的具体做法。 I produced the dragon speed knife knife is a typical cone after the tensile member (Figure 1), before and after after blanking, stretching, school shape, trimming, opening cut at the end, Flanging, the mouth of the final shaping Nine procedures to complete. One of the intermediate processes is the cut-to-open process. This article only on this process, introduce our specific practices.