如图1所示的非淬火钢、深孔(L/d>10)零件,要求孔的光洁度达▽▽▽▽10,我们采用了下述工艺。一、零件制造的工艺过程下料→粗车内外圆→调质(硬度达R_C28～32)→精车内外圆→研磨孔→磨外圆。二、研磨前的要求研磨孔的几何精度,在很大程度上是靠研磨前的镗孔来保证,因此要求镗孔表面光洁度达到▽▽6以上;无明显的走刀痕迹;孔的全长锥度≤0.015,椭圆度≤0.010;余量应尽量小,单面0.015～0.030毫米。 As shown in Figure 1 of non-hardened steel, deep hole (L / d> 10) parts, required hole finish ▽ ▽ ▽ ▽ 10, we use the following process. First, the part of the process of manufacturing materials → → rough rough inside and outside the quenched and tempered (hardness R_C28 ~ 32) → fine car inside and outside the round → grinding hole → grinding cylindrical. Second, the requirements before grinding Grinding hole geometry accuracy, largely by grinding before boring to ensure that the required surface finish boring ▽ ▽ 6 or more; no obvious marks; hole full length Taper ≤ 0.015, ellipticity ≤ 0.010; margin should be as small as possible, single 0.015 ~ 0.030 mm.