B 2016 A型龙门刨床工作台减速、换向、紧急停车动作程序的控制,由LX_(20)-H型组合行程开关箱内6只JLXK_1—411型行程开关,以改变触点的工作状态来实现。由于工作台减速,换向频繁,开关的机械,电气寿命短,经常出现触点接触不良或桥片折断,控制失灵,工作台跑脱,有时一天竞出现4～5次,影响生产。为此,我们对JLXK_1-411开关作如下改装, 改装方法是:将组合开关内6只JLXK_1-411行程开关拆掉(记住控制线联接位置),打开开关盖,去掉 B 2016 A type planer table deceleration, reversing, emergency stop action program control, by the LX_ (20) -H type combination limit switch box 6 JLXK_1-411 type limit switch to change the working status of the contact to achieve. As the work table deceleration, frequent commutation, the switch mechanical and electrical short life, often appear bad contact or bridge break, control failure, workbench run off, sometimes competing for 4 to 5 times a day, affecting production. To this end, we JLXK_1-411 switch for the following modification, modification method is: the combination switch within the 6 JLXK_1-411 travel switch removed (remember the control line connection position), open the switch cover, remove