The step of ordinary automatic feed mechanism used in punch can't be changed.
普通冲床上使用的各种自动送料机构，在冲压生产中通常送料步距是不能改变的。
The present paper described the importance of automatic feed mechanism to automatically pressing and first put forward the concept of rigid feed and soft feed.
本文论述了自动送料机构在自动压制中的重要性，并首次提出刚性送料与柔性送料的概念。
The ratchet wheel and pawl of automatic knife feed mechanism in PASSIM80 cigarette maker had to be replaced frequently because of serious wear.
针对PASSIM 80卷烟机刀头自动进刀机构存在进刀棘轮、棘爪磨损较快，更换频繁等问题，对该机构进行了改进。
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