浮动镗刀杆是机械加工常用的一种精度较高的工具。镗杆上浮动镗刀孔(方孔)的加工,一直是一项难度高的技术。特别是大直径镗杆上的浮动镗刀孔的制作,困难就更为明显。它不仅要耗费大量的机械加工工时,而且需要技术水平很高的工人用专用工具,对方孔进行手工修整,效率很低,而且不易保证精度。为彻底解决这一技术关键,我厂通过分析、试验,利用微机数控技术,通过安排合理的工艺方法,选择适当的工艺,编制适应加工特点的程序,于1983年封接、调试、改进并投入使用了 Floating boring bar is commonly used in machining a high precision tool. Boring bar floating boring hole (square hole) processing, has been a difficult technique. In particular, large-diameter boring bar on the floating boring hole making, the difficulty is even more apparent. It not only takes a lot of machining time, but also requires high-skilled workers with special tools, hand-trimmed the other side of the hole, low efficiency, and not easy to ensure accuracy. In order to completely solve this key technology, I plant through the analysis, testing, the use of computer numerical control technology, by arranging a reasonable process, select the appropriate process, preparation of procedures to adapt to processing characteristics, in 1983, sealing, debugging, improvement and investment used