我厂购进的江西机床生产的型号为C6127A普通车床，其控制原理图如图1。从此控制原理图上可知，此床子上有三个按钮，必须按TA按钮后才能起动正车或反车，若要进行反向刹车和车丝反转时，必须双手同时进行操作，这样给生产工人操作带来了极大的的不便，也严重地影响了生产效率， I purchased the plant in Jiangxi Province of Jiangxi production model for the C6127A ordinary lathe, the control schematic shown in Figure 1. From this control schematic we can see that this bed has three buttons, you must press the TA button to start the car or anti-car, reverse brake and reverse the car, you must both hands at the same time operation, so to the production workers Operation has brought great inconvenience, but also seriously affected the production efficiency,