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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
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www.newmaple.com/video/autocad0006- F4 ]! q# T2 L5 @

0 |' f& b* I3 L! P5 Z! l$ x1. Title block brief introduction( d6 a" d& ]  v" l/ z1 V1 n

6 F6 T' n4 v1 O( _! A2. Text height
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: }' m. p) T1 A2 E3. Viewport & {+ i4 ?8 f& }* l
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4. Dimensions style brief introduction  {# ?. N2 S7 K$ b; r+ y1 {
•        Tolerance in Mechanical / Autocad: K: d  X7 E. o
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special symbols7 {& k" g# A2 v0 P
%%D degree sign
2 L0 @7 t" {1 {3 m' T%%P plus and minus sign- w- I1 W1 t& N/ U9 P/ I3 v
%%C diameter symbol
鲜花(64) 鸡蛋(0)
发表于 2007-11-24 18:33 | 显示全部楼层
鲜花(0) 鸡蛋(0)
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( X- m- g5 a5 c6 H: A9 Q8 I
AutoCAD 实战讲座第七讲& o! f3 i5 ?, Q& S1 y2 s
New Maple AutoCAD (7)
& g, G8 {5 A/ c# [- K! Y" r; f) uwww.newmaple.com/video/autocad0007
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0 P' x; ^. S  z% lA real sample to review lecture 67 h, A, ?' J5 `: y& c  I" s: H1 O
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Introduction Roughness
% @: W2 k: U4 I; G, _# PQuick check hole size and position
% {# l& n2 ~& q& h4 L# JIntroduction O-ring groove
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9 r- m, B0 h5 x; F( qSurface roughness1 d$ N  Z5 O$ P; X
•        Imperial Unit: micro-inch 10-6 inch. g- d, z3 t, A# L, g
•        Metric Unit: micrometer 10-6 m% b' @/ r, m  R, k8 K
•        Sample 250 micro-inch = 6.3 micrometer& F0 M  P6 w1 Q; d- i1 ~
(250X25.4X10-3)
& [) c3 B" v8 E# r# g•        250 micro-inch – forging surface: n6 a. T2 U) U0 H* \2 S
•        125 rough machine, 32 fine machine- [, T& M: n. F5 T' H

1 p. I$ d( ~+ W% i9 AInch size O-ring. V: X4 M* L( o, p( o$ q
•        O-ring number 232
+ e/ ]/ u9 K+ s" E6 b•        nominal size 2.75”x3”x1/8”1 P+ h! M* X  r8 v* B
•        Actual size 2.734”x3.012”x0.139”+ O1 {6 s+ S/ c* _1 S1 ?- X
•        Static surface seal groove depth 0.101~0.107 about 25% squeeze
: [8 \3 U2 s1 F* l•        One of OD or ID is close standard size6 Q" G$ D% e! i# l
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http://www.newmaple.com/forumdisplay.php?fid=28
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