组合机床是用按系列化标准化设计的通用部件,和按被加工零件的形状及加工工艺要求设计的专用部件组成的一种专用机床。 这种机床是按高度的工序集中原则设计的,即在一台机床上可以同时完成许多同一种工序,或多种不同工序的加工。组合机床的工序集中程度也有所不同。在机床动力头的主轴箱上配置许多把刀具同时对工件进行加工,称之为初级工序集中。一般的单工位组合机床就是这种机床。图1所示,是用于对汽缸体实现三面钻孔的初级工序集中的组合机床。在一台机床上包含几个这种多刀具动力头,能同时对工件的不同部位进行不同工序的加工,则称之为 Combination machine is a series of standardization designed by the common parts, and according to the shape of the processed parts and processing requirements of the special components designed to form a dedicated machine tool. This machine is based on the principle of a high degree of focus on the design process, which can be completed in the same machine at the same time many of the same process, or a variety of different processes. The degree of concentration of the combined machine tool is also different. In the headstock of the machine tool, a lot of tools are arranged on the headstock to process the workpiece at the same time, which is called as the primary process. The general single-station combination of machine tools is such a machine tool. Figure 1 shows the combined machine tool used to concentrate the primary processes for three-sided drilling of the cylinder block. In a machine tool containing several such multi-tool power head, at the same time on different parts of the workpiece for different processes, it is called