冷冲模模板的精度要求比较高,一般工厂均采用坐标镗床加工,而对于中小企业,由于缺少坐标镗床,加工就比较困难。为此,我们利用普通铣床进行改进,在铣床纵、横、上下三个行程位置上,加置游标读数装置,收到较好效果。模板孔的相对中心距误差控制在0.02mm以内。改装方法是利用废旧的游标卡尺。由于铣床的纵向进给范围大,可取500mm的游标卡尺,对横向进给和上下升降可取200mm和300mm的卡尺各一支。首先,将游标卡尺拆开,在砂轮机上磨去卡脚,使成为一根尺杆(图 The accuracy requirements of the die template is relatively high, the general factory are using coordinate boring machine processing, and for small and medium enterprises, due to the lack of coordinate boring machine, the processing is more difficult. To this end, we use the ordinary milling machine to improve, milling machine vertical, horizontal, upper and lower three stroke position, plus cursor reading device, received good results. The relative center distance of the template hole is controlled within 0.02mm. Modified method is the use of discarded caliper. Due to the milling machine longitudinal feed range, desirable vernier caliper 500mm, horizontal feed and up and down desirable 200mm and 300mm calipers each one. First of all, open the vernier caliper and grind the caliper on the grinder to make it a bar