C516A单柱立式车床的变速箱及液压操纵系统结构复杂,使用和维修多有不便。根据我们多年积累的经验,提出一套改装方案,可望帮助各地用户解决一些实际困难。 1.机械方面见图1,改装后:①取消了Ⅰ轴原有的启制动摩擦片式离合器,相应地取消了操纵离合器的拉杆、拨叉及油缸;②将原来两段式结构的Ⅰ轴改 C516A single-column vertical lathe gearbox and hydraulic control system complex structure, use and maintenance of more inconvenience. Based on our accumulated experience over the years, we propose a retrofit program that is expected to help users around the world solve some practical difficulties. 1. Mechanical aspects shown in Figure 1, after the modification: ① canceled the original I-brake friction plate clutch, the corresponding canceled the rod clutch, fork and cylinder; ② the original two-stage structure Ⅰ Shaft change