|
|
楼主 |
发表于 2009-7-30 20:51:09
|
显示全部楼层
来自： 中国浙江温州
' B0 m: H5 f ]9 k; y! l. m7 v; I4 W9 j' |! k' _$ E
% I7 R* L; G: R7 ~- K* P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：; |7 g; P, C3 b
* H: [. k, m. b H. O3 d“
; c% j" \- h: XHi XXX,: W+ a- Y) ~7 a x* G5 w1 P
% J( a8 d* c; E: p6 v
2 v8 z$ C- T) t" k. v+ XAccording to ASME Y14.5-1994 para. 2.5, single limits dimensions such as those indicating MAX or MIN:
" ~2 e" F3 @% _3 l/ h' q
# o S" `( k) F. Q1 w1 `# |" H: r" c; B4 k5 K5 n8 B
“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.”
5 Z3 o; ^5 u/ m' S: a6 f' o* {% k6 P8 U; s. ` k
0 G! Q" r( A- C9 b- I) K9 I1 F GTherefore, 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].; l4 }$ X% j1 `" w: ?
) ^- A! L- B& {9 Z" ? n8 S. Q
^$ g0 J/ g8 t4 W/ l1 o& N' ~/ d
I hope this answers your question, but if it is still unclear let me know and I will try to explain further.
% Q: k8 H* ~6 j+ e' B8 T' Z6 d& ~3 O+ Y/ }6 R9 t" M$ g
/ r% f( n H* `Thanks; x8 P; F- x$ C0 @/ ]5 [9 s2 K, N
XXX
4 R1 J; X o0 Z6 c9 n”+ a- S) V! H. L6 V- o
/ O4 d" o: h4 Q7 M7 C
谢谢大家的关注！
/ X9 N5 Q9 r8 Q9 s! D( V: n- J0 ~1 Q# A3 j2 O5 B- a. |& G
[ 本帖最后由 wangyanwei 于 2009-7-30 20:53 编辑 ] |
|
发表于 2009-7-30 14:34:47
:P :P :P :P