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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：5 l3 p& s" C: W$ }; c
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Hi XXX,- A, O0 Q" W j2 x
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' Y- m {/ D; _, Q6 A; E( f; TAccording to ASME Y14.5-1994 para. 2.5, single limits dimensions such as those indicating MAX or MIN:
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“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.”/ f& Z* g1 i& O
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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].( p0 {, }1 u6 j% g X: e M
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9 f# B0 G Q5 Z& g- d, `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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Thanks
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: i3 R/ A+ b c& |谢谢大家的关注！
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4 ~" b8 P" L; d! T" k( @9 a9 \[ 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