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我厂生产的液压泵系列中的几种转于柱塞孔(如图1、2),以往在车床上钻、镗孔,然后在钻镗床(或立式铣床)上铰、挤孔.由于孔多(7～9个)而深,精度高,又是盲孔,这种工艺方法生产效率极低,满足不了批生产的需要.近几年来,我们经过不断地改进工艺和刀具,通过反复的试验,在铣镗床(或立式铣床)上一次铰出,既保证了产品质量又提高了工效4～6倍.
Several kinds of hydraulic pump series produced in our factory turn to the plunger hole (as shown in Fig. 1 and 2). In the past, we drilled and boring on the lathe, then weaved the hole on the boring machine (or vertical milling machine) Hole more (7 to 9) and deep, high precision, but also blind holes, this method of production is very low efficiency, can not meet the needs of batch production. In recent years, we continue to improve technology and tools, through repeated Test, milling or boring machine (or vertical milling machine) on a hinge out, both to ensure product quality and improve efficiency 4 to 6 times.