C730-1多刀半自动车床,在我厂使用多年,生产中发现进刀箱部分的齿形结合子牵引电磁铁线圈(图1 )经常烧毁,影响生产。 该线圈烧毁的频率很高,有时一台机床一班需换4～5个,月消耗量60～70个。经调查分析,发现造成烧毁的原因如下:1.电磁铁吸力较小,有时达不到实际吸力要求;2.齿形 C730-1 multi-knife semi-automatic lathe, used in our factory for many years, found in the production of the serrated part of the feed box traction solenoid coil (Figure 1) are often burned, affecting production. The frequency of burning the coil is very high, and sometimes a machine to be a shift of 4 to 5, the monthly consumption of 60 to 70. After investigation and analysis, it is found that the causes of burning are as follows: 1. Electromagnet suction is small, and sometimes can not reach the actual suction requirements; 2. Tooth shape