形状公差和位置公差的详细讲解 (NXPowerLite)

1、 eeee ；e . e分类 特征项目符 号有或无基准要求分类特征项目符 号有或无基准要求形状公差形状轮廓直线度无位置度定向平行度有平面度无垂直度有圆度无倾斜度有定位同轴度 有圆柱度无形状或位置公差对称度有线轮廓度有或无位置度 有或无跳动圆跳动 有面轮廓度有或无全跳动有（1）Geometrical tolerances 形位公差分类及特征项目和符号形位公差分类及特征项目和符号 GB/T 11821996）H Continuous thin lines细实线细实线2HReference and related symbols基准符号和形位基准符号和形位公差的公差的附加符号附加符号 Related

2、 symbols of the geometrical tolerance value 公差值及有关符号公差值及有关符号Characteristic symbols特征符号特征符号（2）Code of geometrical tolerance 510 2b 2H2H（3）Reference code Thick lines 粗线粗线A A0 0. .0 02 2A A0.050.05A A0 0. .0 01 1 1. If the element being tested with a tolerance requirement is a contour line or surface,

3、point the arrow and datum symbol to the contour line or surface, and keep it away from the dimension line A AA AG GG G A A0 0. .0 02 2 A A A A 2. If the element being tested with tolerance requirements is an axis, centre line or symmetrical plane, the arrow and datum symbol should be aligned to the

4、dimension line of that element A A3. If the element being tested is a surface on the drawing, one can draw a reference line with a dot end and point the arrow or datum symbol to the reference line. 0.2 A AReference line参考线参考线参考线参考线 2. 3. 4. 本 小 节 结 束B B A AP P0.040.04A A0.050.051 1) ) 30k6 30k6 cyli

5、ndrical tolerance is not larger than(圆柱度不大于圆柱度不大于) )0.010.01；2 2) ) 20H7 20H7 straightness tolerance tolerance is not larger than( (直线度不大于直线度不大于) )0.040.04；3 3) ) The coaxia tolerance 30k6 30k6 to 20H7 is not larger than( (同轴度不大于同轴度不大于)0.05)0.05；4 4) )P P plane to 30k630k6 perpendicularity is not larger than ( (P P面对面对30k630k6垂直度不大垂直度不大) )0.020.02；5 5) )P P plane flatness tolerance is not larger than (P P平面的平面度不大于