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[经验感悟] AutoCAD 实战讲座

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发表于 2007-11-24 13:32 | 显示全部楼层 |阅读模式
老杨团队,追求完美;客户至上,服务到位!
AutoCAD 实战讲座
/ w( g+ j% Z; _1 v+ m# Q6 ]/ P2 a5 _http://www.newmaple.com/forumdisplay.php?fid=28
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www.newmaple.com/video/autocad0006
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1. Title block brief introduction3 i' d& K- Z; a* R4 X( O

; a5 Y; x- k& f: X0 k. A2. Text height. P1 f6 e& p1 M1 d* l
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3. Viewport 0 f  {8 G5 Y! }2 {3 e
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4. Dimensions style brief introduction
) W3 N5 `1 a2 ~' x•        Tolerance in Mechanical / Autocad+ D2 w$ O" r" O) }# e7 ?$ x* }

* Z  ^$ z$ i4 m+ t& x, d4 Qspecial symbols
6 R& }! L. m6 k+ k: ?  p9 Z1 K%%D degree sign
- A) N" N& m$ o8 X. e" K) F( q) W%%P plus and minus sign
* `3 Y! m/ n3 }) ]1 j8 w8 C%%C diameter symbol
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发表于 2007-11-24 18:33 | 显示全部楼层
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发表于 2007-11-24 19:27 | 显示全部楼层
Very practical!
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 楼主| 发表于 2007-12-3 12:38 | 显示全部楼层
老杨团队 追求完美
[V] AutoCAD 实战讲座第七讲
) D9 J8 i/ Y# u- g0 B) PAutoCAD 实战讲座第七讲
* K+ U  D- s2 u9 X2 CNew Maple AutoCAD (7)
2 s9 L% C0 c" i* z6 h, r# l* rwww.newmaple.com/video/autocad0007
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% y9 U" l' Z, T" g1 x! QA real sample to review lecture 66 J4 d7 R. k7 D! Q2 L& l

% o4 e( `2 j6 k7 A( r5 u, |3 ZIntroduction Roughness, k( m9 `) ^7 d1 U/ k" z
Quick check hole size and position
# t# I. C+ H/ ~6 WIntroduction O-ring groove
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Surface roughness; r: C; r* M- B# T. `  H
•        Imperial Unit: micro-inch 10-6 inch
( U' t! L3 y& J0 x/ H•        Metric Unit: micrometer 10-6 m
( G8 p6 A+ H9 h•        Sample 250 micro-inch = 6.3 micrometer
* k$ S9 G5 S$ Y. c9 `(250X25.4X10-3)
; y- ~* F( z2 F$ z+ V•        250 micro-inch – forging surface
( q6 B/ o& L! @7 u•        125 rough machine, 32 fine machine
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  k$ n- t! F3 x# i- R$ _2 Y8 QInch size O-ring
" ], C  N! Y2 N" E9 w1 f" C) ^$ x8 D& k•        O-ring number 232
) n5 q8 |- {6 U' [" n2 M•        nominal size 2.75”x3”x1/8”5 ~" E! A# U! p5 N' r
•        Actual size 2.734”x3.012”x0.139”
: Z2 B0 _$ c( p7 G2 r! }" C•        Static surface seal groove depth 0.101~0.107 about 25% squeeze; \1 O. o& r! z( d
•        One of OD or ID is close standard size  e5 d, J. H3 I

; I; g7 |" |, P5 Y: E3 U1 qhttp://www.newmaple.com/forumdisplay.php?fid=28
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