龙门刨床的进刀需要步进运动机构。目前国产刨床普遍采用如下两种机构:一种是紧张环式,另一种是超越离合器式。这两种进刀机构结构都较复杂,组成的零件较多,难以维修,易磨损,需要经常调整,其进给量稳定性差。分析了这两种进刀机构的特点及其进刀不准的原因,研究了我厂从日本引 Planer knife feed requires stepper movement agencies. At present, the domestic planer commonly used the following two institutions: one is tension ring, and the other is beyond the clutch type. These two kinds of feed mechanism structure are more complex, more components, difficult to repair, easy to wear, need to be adjusted often, the feed stability is poor. Analysis of the characteristics of these two kinds of feed mechanism and the reasons for the feed is not allowed, I studied the plant from Japan cited