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发表于 2009-7-30 20:51:09
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来自： 中国浙江温州
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4 \# `8 @6 y9 a; W, ~我也联系了美国的制图者，刚收到他的回复，基本和上述仁兄的分析吻合。 现分享下他的回复内容，如下：7 o, d9 x* Q; I8 x" G
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Hi XXX,
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According to ASME Y14.5-1994 para. 2.5, single limits dimensions such as those indicating MAX or MIN:
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" q8 U. G& o; q$ |! ^# ?1 j“Single limits are used where the intent will be clear, and the unspecified limit can be zero or approach infinity and will not result in a condition detrimental to the design.”, `9 q L: q/ ^3 A8 |8 X- W+ j7 [9 Z
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Therefore, the .0015 max. radius or chamfer on drawing does not require a radius or chamfer, and the edge can be sharp, but if a radius or chamfer is present, it must not be any larger than .0015 [0.038 mm].
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I hope this answers your question, but if it is still unclear let me know and I will try to explain further.
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- e y. X- s% H' c* XThanks
2 M& R4 A# ^2 ~! K3 J, s: ?% jXXX
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. D: q" M& x' w# a, w谢谢大家的关注！
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' `6 r [7 n' N[ 本帖最后由 wangyanwei 于 2009-7-30 20:53 编辑 ] |
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发表于 2009-7-30 14:34:47
:P :P :P :P