Auxiliary Views - 6 Lafayette Engineering Activity 2.3.3...

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Unformatted text preview: 6 Lafayette Engineering Activity 2.3.3 — Auxiliary Views Purpose In one of your earlier activities, you sketched the right side view of a house. Imagine that you were given the responsibility of ordering the materials to put a new shingle surface on the roof of that house. In order to determine the number of shingles that you would need to order, you would first have to calculate the total surface area of the roof. Would the views in your sketch give you enough to perform these calculations? Are all of the edges of the roof portrayed in their true length? W/wwwW—wyé E / l ...§...W....-......W...,.. ; /i a f : Win 3 i 2 ,mewgmemw-MMWWMWW . Parts that have inclined surfaces present a particular challenge because an inclined surface cannot be viewed perpendicular to any of the six principle views in a simple multiview drawing. Therefore, geometry that is on an inclined surface will not be represented properly with a simple multiview drawing. The surface and its features will appear to be foreshortened. When this happens, an auxiliary view is needed to properly communicate the geometry on an inclined surface. Auxiliary views are a type of orthographic projection. Equipment 0 Computer with 3D CAD solid modeling software Project Lead The Way, Inc. Copyright 2007 lED — Unit 2 — Lesson 2.3 — Activity 2.3.3 — Auxiliary Views —— Page 1 dimensions, but DO NOT DIMENSION THE SKETCH. Create the object as a solid CAD model, save the CAD file, document the file name and location on the line provided, and submit this activity to your instructor for evaluation. \8-32 UNC 8 CAD file name and location: Conclusion 1. When is an auxiliary view needed? “\rgfiéivx ‘3 1'3 C» m / Wye / git!» JVl/‘wkg filr‘rmkwtfi tee sxwawa‘imek lay/c4 ‘: eating gm 59‘ tiny-‘5’“; Vfiy‘Q‘lQ fl 9%? on . V 2. What does the term foreshon‘ened mean? Br: _ a h» in was” '~ he» Y: are 9ka W» ovx. wwd «‘J'~%.,v> we. WW 2 at. A x ~ «. i; Kin/~39 tag-eon his “whim 3 V I} 2 w.» WW MW 3. Why would it be inappropriate to dimension to a feature on a surface that is not perpendicular to the line of sight? [Wt/6 c}.le KNOX V14ng bklcim‘fiswv‘xx we, Lbfiffiifigfi Project Lead The Way, Inc. Copyright 2007 lED — Unit 2 -— Lesson 2.3 — Activity 2.3.3 — Auxiliary Views -— Page 4 ...
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