冷冲模中的导柱起着精密导向作用,其制造精度较严,光洁度▽▽▽▽,圆锥度及椭圆度在0.005毫米以下。应用一般的磨削不易达到要求(尤其是光洁度),因此通常是磨削后研磨来达到要求,但劳动生产率不高。本人在加工图1所示的导柱时采用直接磨削方法,摸索到一点经验,工件经原一机部第十一研究所检验鉴定为:表面不平度 H_(cp)0.1911～0.246微米,达到▽▽▽▽_(12);圆锥度、椭圆度及直线性均在0.002毫米以内。其特点是:加工迅速,质量稳定,在几分钟内很容易达到▽▽▽▽_(11)。 Chuck in the cold die plays a leading role in precision, its manufacturing more stringent precision, finish ▽ ▽ ▽ ▽, conicity and ovality in 0.005 mm below. Application General grinding difficult to meet the requirements (especially the finish), it is usually grinding after grinding to meet the requirements, but labor productivity is not high. I process the guide column shown in Figure 1 direct grinding method, groping a little experience, the workpiece inspection by the Eleventh Institute of the original machine identified as: surface roughness H_ (cp) 0.1911 ~ 0.246 microns, to ▽ ▽ ▽ ▽ _ (12); Conicity, ovality and linearity are within 0.002 mm. Its features are: processing speed, quality and stability, in minutes it is easy to reach ▽ ▽ ▽ ▽ _ (11).