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右墙板(见图1)是HS型手拉葫芦主要构件。该件的加工精度直接影响装配质量和整机性能,它的结构特点决定了其孔系(基准孔除外)不能在一次加工中完成,其中一组精度、光洁度较高的孔在钻削后,需经两次精加工,如果第二次加工中定位基准选择不当,直接会影响到这组孔的座标精度。精加工后的孔E、F因压入钢套后引起孔O变形(一般椭圆
The right wall (see Figure 1) is the main component of the HS type chain hoist. The processing accuracy of the piece directly affects the assembly quality and overall performance. Its structural characteristics determine that its hole series (except for the reference hole) can not be completed in a single process. One set of holes with high precision and smooth finish, after drilling, Need to be finished twice, if the positioning of the second processing base improper choice, will directly affect the coordinates of the hole coordinates. After finishing the hole E, F caused by the pressure into the steel hole O deformation (generally oval