在大闹技术革命运动中,昆明机车车辆厂职工,为　发挥设备潜力,提高劳动生产率,在插床上增设一把回程插刀,利用电磁退刀原理,实现了双程插削,使插床工作效率提高一倍。现介绍如下,供各单位参考。 操作方法:首先安装与调节插刀(1)、(2)、插刀 (2)插入刀盒10内,用紧固螺钉12紧固, In the technical revolt movement, Kunming Rolling Stock Works staff, in order to give full play to the potential of equipment, improve labor productivity, add a return stroke on the slotted knife, the use of electromagnetic retractable knife principle, the realization of the two-way interpolation, so slotting efficiency Doubled. Now introduced as follows, for all units for reference. Operation method: Firstly, insert and adjust the knife (1), (2), the knife (2) into the knife box 10, tighten with the fastening screw 12,