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CPCZ叉车拨叉结构如图1,材质为ZG45。原加工工艺:先夹φ38外圆车端面、钻镫φ25_0~(+0.023)孔,车宽度为10_(-0.2)的叉面,然后以φ38端面定位钻攻M10×l螺孔。由于车削工件刚性不足,加工表面光洁度差,且效率低,尤其是12_(0.05)~(0.05)尺寸难保证,造成装配时结合子齿轮不能对中心。根据上述分析,我们将拨叉增加两条加强筋,以提高刚性(见图2)。同时改进了加工工艺,即:在镗孔或钻攻螺孔后,以螺孔定位车削叉面。这样,加工的工艺基准与装配基准重
CPCZ fork fork fork structure shown in Figure 1, the material is ZG45. The original processing technology: the first clamp φ38 cylindrical car end face, drilling 镫 φ25_0 ~ (+0.023) hole width of 10 _ (- 0.2) of the fork, and then φ38 end positioning drilling attack M10 × l screw hole. Due to the lack of rigidity of the turning workpiece, the machining surface finish is poor and the efficiency is low, especially the size of 12_ (0.05) ~ (0.05) is difficult to guarantee, resulting in the assembly of the sub-gear can not be centered. Based on the above analysis, we will fork two additional ribs to increase rigidity (see Figure 2). At the same time to improve the processing technology, namely: After boring or drilling tapping, with screw hole locating turning face. In this way, the process of processing standards and assembly basis weight