C 616车床横向丝杆与螺母的间隙调整很不方便。所以操作者在使用过程中,当横向丝杆和螺母磨损后,以至手柄空回程量超过规定很多时,也不去调整,致使这个机构几乎失去了作用。另外,这种形式的调整机构的某些零件加工工艺复杂,如差动螺母和主螺母(见图1),需分别加工后,再进行组装 C 616 lathe horizontal screw and nut clearance adjustment is very convenient. Therefore, the operator in use, when the horizontal screw and nut wear, and even the amount of empty handle back more than the provisions of a lot, it does not adjust, resulting in this mechanism almost lost its effect. In addition, this part of the adjustment mechanism of complex parts of the processing complexity, such as the differential nut and the main nut (see Figure 1), to be processed separately, and then assembled