在普通车床上高速切削内、外三角螺纹,是提高工作效率和表面光洁度、精度的有效途径,对批量较大的生产尤为适合。但是,对带有台肩面的外螺纹或者是封闭孔的内螺纹,在切削时能否准确地控制丝杠开合螺母的分离,很为关键,若稍有疏忽,不仅使零件报废、砸坏刀具,而且严重会撞坏机床,造成事故。为此,我们在车床上增添了一套丝杠开合螺母自动分离装置实现高速切削螺纹。经多年来使用证明,不但具有结构简单、操 High-speed cutting in the ordinary lathe, the outer triangular thread, is to improve work efficiency and surface finish, an effective way of accuracy, especially for large quantities of production. However, it is very important for the internal thread with the shoulder surface or the closed hole to accurately control the screw-nut separation during the cutting. If the internal thread is slightly neglected, not only will the part be discarded or smashed Bad knives, but also serious damage crashes the machine, causing accidents. To this end, we have added a lathe screw opening and closing nut automatic separation device for high-speed cutting thread. After years of use proved that not only has a simple structure, exercise