作为近代组合机床的主要组成部件的通用部件和控制机构,随着组合机床设计、制造技术的进步,在组合机床的构成中所占的比例逐渐提高,而专用部件所占的比例逐渐下降。因此,通用部件的划分及结构的合理性日益显得重要。它是影响组合机床技术经济指标的重要因素之一。在第二次世界大战以后的年代里,一些工业先进的国家,对原有的陈旧设备进行了大规模的更新。一些新兴的国家,特别是各个社会主义国家,进行了大规模的经济建设。组合机床也以其前所未有的重要角色出现在不同国家的不同产业部门,特别是一些需要量大的机器 As a common component and control mechanism of modern composite machine tools, as the combination of machine tool design and manufacturing technology progresses, the proportion of components in the composite machine tool gradually increases while that of special components gradually decreases. Therefore, the division of the common parts and the rationality of the structure are increasingly important. It is one of the important factors affecting the technical and economic indicators of the combined machine tool. In the post-World War II era, some of the most advanced countries in the industry carried out large-scale modernization of their old equipment. Some emerging countries, especially various socialist countries, conducted large-scale economic construction. Combined machine tools with its unprecedented role played an important role in different countries in different industries, especially in some large-capacity machines