我厂一九七一年生产了一批C616A×5车床,在生产使用中发现变速箱中部分齿轮打齿现象严重,给机修部门造成很大压力。经三结合小组研究,并到兄弟单位学习、了解情况,普遍认为这是一个共同问题,必须从机床设计上根本解决。因此,我们对C616A×5车床进 I plant in 1976 produced a number of C616A × 5 lathe, gear found in the production of gear part of the phenomenon of serious tooth gear, to repair department caused great pressure. Through the study of the three combined groups, and learning from brothers units to understand the situation, it is generally believed that this is a common problem and must be fundamentally solved from the machine tool design. Therefore, we enter the C616A × 5 lathe