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某机床厂原先加工转子废品率高达90％左右,据介绍主要问题是叶片槽铣削时的啃刀痕迹磨不掉。我厂在铣加工大规格叶片油泵转子槽时(在15公斤力/厘米~2压力下,输油量为80升/分)也出现过同样的问题。特别,为了解决槽对φ4.5退刀孔偏移的问题,学习兄弟厂先进经验,采用先铣槽后钻退刀孔的新工艺后,铣槽的啃刀现象,更为严重,狭槽两侧面磨加工以后,仍会残留有几条铣槽啃刀痕迹——几条逞弧线的刀痕分布在槽侧的不同部位。
A machine tool factory processing of the original rotor rejection rate as high as 90%, it is reported that the main problem is the blade groove milling gnomes worn when worn. I mill in the machining of large size vane pump rotor slot (at 15 kg / cm ~ 2 pressure, oil volume of 80 liters / min) also appeared the same problem. In particular, in order to solve the slot φ4.5 escape hole offset problem, learn the advanced experience of brother factory, using the first after the milling groove back hole drilling new technology, the milling of knives knife phenomenon is more serious, the slot After grinding on both sides, there will still be a few grooves left by the milling knives - several cutting marks on arc grooves are distributed on different parts of the groove side.