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图10所示零件的结构已经简化。Φ37外圆柱面中心线B、Φ30孔中心线A的名义要素垂直相交。分别标注中心线B对中心线A的垂直度、对称度。为了限制平面C对基准体系(第一基准中心线A、第二基准中心线B)的位置误差,给出相应位置度公差。为了限制Φ36.5定位孔中心线对基准体系C/A/B的位置误差,给出相应位置度公差。4×M2孔中心线组与4×M1.6孔中心线组之间的相对角向位置只受未注公差限制。
The structure of the part shown in FIG. 10 has been simplified. Φ37 Outer Cylindrical Centerline B, Φ30 Hole Centerline A The nominal elements intersect perpendicularly. Mark the centerline B centerline A perpendicularity, symmetry. In order to limit the position error of the plane C on the reference system (first reference center line A, second reference center line B), a corresponding position tolerance is given. In order to limit the Φ36.5 positioning hole centerline reference system C / A / B position error, given the corresponding position tolerance. The relative angular position between the 4 × M2 hole centerline group and the 4 × M1.6 hole centerline group is limited only by unnoticed tolerances.