近年来,车床主轴出现了直接驱动技术。这种传动技术有两种结构方式:一种是用交流变频主轴电机通过刚性联轴节直接传动车床主轴,见图1。另一种是采用内装式交流变频主轴电机驱动主轴,国外也称此为集成主轴(见图2)。后一种结构中,车床主轴就是电机转子。目前主轴直接驱动技术推广 In recent years, there has been a direct drive technology spindle lathe. This kind of transmission technology has two kinds of structural ways: One kind is to use AC frequency conversion main shaft electrical machinery to directly drive the lathe main shaft through the rigid coupling, see Fig. The other is the use of built-in AC variable frequency spindle motor drive spindle, also known as foreign integration spindle (see Figure 2). The latter structure, the lathe spindle is the motor rotor. Spindle direct drive technology promotion