在生产大跃进运动中,我厂职工发挥了冲天干劲,破除迷信,大胆革新技术,对724龙门刨床进行了改装,改装后的龙门刨床在前进和后退的两个行程中都能进行刨削,提高工作效率约一倍。龙门刨床改装的主要部份是刀架,改装后刀架的内部结构如图1所示。在原来刀架上只能装一把刨刀,现在再增加一把刨 In the Great Leap Forward movement, the workers in our factory exerted the glittering motivation to get rid of superstition and innovate the technology boldly. The 724 planer was modified. The modified planer can be planed in the two courses of forward and backward, Improve work efficiency about double. The main part of the planer modification is the knife holder, the internal structure of the modified knife holder is shown in FIG. 1. In the original knife can only be installed on a planer knife, and now add a planing