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切削加工鼠笼式转子外圆会不同程度地增加转子损耗。加工方法不同,增加的损耗各异。用普通菱形车刀车削或砂轮磨削容易造成矽钢片片间及鼠笼条与片的短路,还易造成加工表面的冷作硬化。切削区温度过高,还可能造成部分冲片微熔焊接。这些因素都会使转子损耗增加。近年来的实践表明,采用圆盘式旋转车刀,转子的附加损耗比其他加工方法要低,一般可降低20～25％,因而可降低电机的温升,提高效率。下面介绍一种圆盘式车刀。圆盘式旋转车刀1(图1)是由Т15К6,ТК8或Т14К8(均苏联牌号)硬质合金制造而成,安装在主轴2上使用。主轴前端装有两盘
Cutting cage rotor outer rotor will increase the rotor loss to varying degrees. Different processing methods, increased loss of different. With ordinary diamond turning or grinding wheel grinding easily lead to the silicon steel sheet and the cage with the film of the short circuit, but also easy to cause the work surface cold hardening. Cutting zone temperature is too high, may also cause some of the pieces of micro-welding welding. These factors will increase the rotor loss. In recent years, practice shows that the use of disc-type turning tool, the rotor additional loss than other methods to be lower, generally can reduce 20 to 25%, thus reducing the motor temperature rise and improve efficiency. Here’s a disc type turning tool. Disc rotary turning tool 1 (Figure 1) is made of Т15К6, ТК8 or Т14К8 (all Soviet Union grade) cemented carbide, installed on the spindle 2 to use. Spindle front with two plates