这次全国先进刀具观摩推广队中南分队来长沙,为我厂解决了不少关键问题。其中一项为铜套(石墨青铜)孔的光洁度问题,(设计要求光洁度▽▽▽7,直径φ27~(+0.003),孔深80毫米),这是我厂自生产该产品以来未解决的问题。经过他们一天的艰苦奋战,采用“圆片浮动搪刀”搪孔可将光洁度提高到▽▽▽7以上,尺寸符合设计要求,效率提 The national advanced tool to observe and promote the promotion team in South Africa to Changsha, for my factory to solve a number of key issues. One of them is the problem of the smoothness of the copper sleeve (graphite bronze) hole (the designed finish ▽ ▽ ▽ 7, the diameter of φ27 ~ (+0.003), the hole depth of 80 mm), which has not been solved by our factory since its production problem. After one day of their hard work, the use of “wafer floating boring knife” Boring can improve the finish to ▽ ▽ ▽ more than 7, the size of the design requirements, efficiency