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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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, \: i7 \. [# r1 N2 L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：) x' _* B2 q- Z; w
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Hi XXX,
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! H, a( o) T8 E1 PAccording 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.” n- g5 M, ?9 s5 x6 G* z& d
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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].( q1 X1 s! G7 I) x5 A
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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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XXX
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谢谢大家的关注！7 d/ K6 |( N/ U1 Q" w) ]& T# U |
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[ 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