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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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8 G8 c: O& B8 K4 |; A! M; s6 K0 z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：9 F W' e+ D8 w+ k
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/ v- e4 j8 B1 y- Z6 t9 NAccording 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.”
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5 G" y0 j% g; `, e1 R' k* \5 i, _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].. K4 r0 P- t& H7 @* r9 a- s% | Z
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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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Thanks6 k% G0 _. l+ k; R7 s+ k1 L; b* a7 F
XXX8 }, q2 }/ b# }5 |
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o' x: z- F/ k! S- u7 J+ P谢谢大家的关注！5 G( g- ^8 {4 L$ U. e0 b$ ?
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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