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如图1所示钢球工件,需在其上钻铰通孔φ3_0~(+0.025)mm,保证其与外球面最大直径φ10_(0.036)~0mm同轴度为φ0.03mm。过去工厂习惯用V形块定位,
As shown in Figure 1 steel ball workpiece, the need to drill hinge hole φ3_0 ~ (+0.025) mm, to ensure that the maximum diameter of the outer spherical surface φ10_ (0.036) ~ 0mm coaxial φ0.03mm. In the past the factory used to V-block positioning,