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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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2 g9 q1 ~. I* b4 u- E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：
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: G8 ^0 F" Q1 K7 p& yAccording to ASME Y14.5-1994 para. 2.5, single limits dimensions such as those indicating MAX or MIN:7 }! S* m# s7 v# W5 `- K
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/ A' G2 a& j! c4 Q5 m“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.”
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. s A- _3 a5 y1 e* s% J& VTherefore, 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.! ^& Q( X' C9 E2 b! {* j; r
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谢谢大家的关注！0 W- P2 Z& Y! Q6 [6 F0 J
) f, L: `' T; p( h( ]- | C[ 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