The Frame
6 ?7 i4 P/ b5 ?) jCreate a new part.创建一个新零件
! E M" g0 a& r# \2 VUsing the drawing provided on illustration EX1-B, build the Frame. 使用所提供的工程图建模 & V- z" B8 y' j
Exhibit your ability to create extruded, swept or lofted features.
9 v c5 `( u1 q5 y( w+ x使用拉伸、扫描或放样 : U' J! H h2 U7 { m: b3 h
Use mirroring to create symmetry使用镜像创建对称物体
9 x7 q2 F9 P# p( U* mSave the part in your folder as: “Frame”保存文件为Frame8 K8 V8 @7 \. ?0 x: O+ q/ E+ K
8 \$ e+ O" l7 r: x, W. a9 }Design Intent设计意图:
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9 n7 L* i \5 \1 i' P6 c" E) `The part is symmetric from left to right零件从左到右对称
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The part origin is located concentric with the lower bosses零件原点与最下端圆孔同心$ B1 `5 u+ S1 f- W9 C
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The interior machined surfaces labeled A and B are coplanar内机械加工表面标记为AB的面为同一个平面
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The vertical member is elliptical and always tangent to both the upper and the lower bosses. 垂直部分是椭圆形的，并且总是和上下两个圆柱孔外表面相切8 P% C: V, g9 T$ i
CAUTION:# p; S1 w& ]" M: s. d, S
Tangency between cylinders occurs at the center plane of the cylinders only if the cylinders are of equal diameter.仅当两个圆柱孔直径相等时，相切发生在圆柱中心平面- k) S7 g4 Z) p1 l1 A6 U
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( z- l8 L/ y" C2 T( d" k( M9 RThe top and bottom radii of the I-shaped cross member are always tangent to the outside edge of the vertical member. I形的顶部和底部总是和垂直部分的外边线相切
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The Upper Boss must work for the value range:
; d9 P& x! `7 N$ O, N: {.95 to 1.875 in.顶部圆柱外径可以从0.95到1.875英寸
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The Lower Boss must work for the value range: 1.25 to 2.25 in.底部圆柱外径可以从1.25到2.25英寸7 y$ v9 C4 ~* @: W
Scoring Criteria:$ e2 R7 E7 H9 n
The Frame评分规则; s: a% q0 j& I* R
Total Value:
: c7 l* D9 h, t6 x. t80 Points总分：80分
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Were the bosses created as extruded features?
' Z# D( u3 f, h y圆柱孔是否是拉伸特征？(5分)
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Change the center-to-center height from 5.5 to 7.5., C! S. A1 O/ A
Does the part rebuild correctly?将两个圆柱孔中心距离从5.5改到7.5是否有重建错误？（10分）
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Was the Vertical Member created using a loft or a sweep?垂直部分是否用放样或扫描完成？（10分）
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& e6 Y- A& D+ i+ ]6 e$ WChange the lower boss diameter to 2.25 and the upper boss diameter to .95.将底部圆柱孔直径改为2.25和顶部圆柱孔直径改为0.953 L5 e+ W. Z- q: _
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Does the part rebuild without errors and has Design Intent been maintained?零件重建是否有错误并同时保持设计要求？（10分）5 Q5 j* b6 B9 j8 C4 F, o3 I& o
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Does the Cross Member remain tangent to the Vertical Member?水平交叉部分是否和垂直部分保持相切？（10分）9 q7 w0 {6 v2 T8 D" f& ]
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Is the Vertical Member tangent to the Upper and Lower Bosses?5 \0 `- I, {/ B$ F1 c# e
顶部和底部圆柱孔是否和垂直部分保持相切？（10分） }/ N" n* q% n* X" z' F
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Inspect the Upper Hole diameters to verify that they are represented accurately.检查上圆柱孔直径是否精确表达？（5分）
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Inspect the Lower Hole diameters to verify that both are .625 in diameter.检查下圆柱孔直径都是0.625英寸的情况（5分）
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& ~! Q' [5 l8 |! RIs the keyway in only one of the Upper Holes? i' x5 W3 k; |- f& X
是否顶部圆柱孔只有一个键槽？（5分）
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& }! j- ]( ~) t; g6 m, KWas the keyway created using a min arc condition dimension of .0.63?8 [9 B/ e( x% S8 @
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键槽的生成是用了0.63最小圆狐的尺寸条件。( q) z1 [0 `( N9 C0 y- M
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' H9 ]0 Y7 S$ f4 {: rChange the width of the keyway., [- B( Z! h& q. y) v
Is the feature symmetrical and has design intent been maintained?改变键槽宽度，特征是否对称，设计要求是否保持？（10分） |
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狗仔卡
发表于 2008-2-19 14:21
显身卡