在我们地质系统加工生产的锁接头，螺纹的加工佔着很大的比重。过去由于高速挑扣效率低质量差，因而采用螺纹的铣削法进行加工。从实际经验说明：螺纹铣削法不但效率高，而且产品质量好，同时由于车床主轴在低速下运动，机床寿命大大延长了，工人劳动强度也有了很大改善。 In the lock joints produced and processed in our geological system, the processing of the threads occupies a large proportion. In the past, the high-speed pick-up efficiency was low and the quality was poor. Therefore, the thread milling method was used for machining. According to practical experience, the thread milling method is not only efficient, but also has good product quality. At the same time, because the spindle of the lathe moves at a low speed, the service life of the machine tool is greatly extended, and the labor intensity of workers has also been greatly improved.