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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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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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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:- v& w3 S) R2 i9 E7 U( k$ k1 ^0 i K1 h
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( ?7 J- f5 H, p8 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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& x8 w) k4 w) Y- H* 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.
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' u4 z a4 m% KThanks
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谢谢大家的关注！4 ?! y- U( Y0 @1 @7 A4 q
4 \, H2 g- g9 n) o) Q, u[ 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