Orthographic Drawing skills_Rev110107

Orthographic Drawing skills_Rev110107 - First-Year...

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Unformatted text preview: First-Year Engineering Program Click to edit Master subtitle style First-Year Engineering Program Session 4 Orthographic Projection Drawings Skills Objectives: Demonstrate the use of line types and conventions Give a general procedure for converting isometric to orthographic views Reference : Technical Graphics, Chap 3: Up to 3.14.5 Examples from : Introduction to Graphics Communications for Engineers, Bertoline First-Year Engineering Program Session 4 P. 2 Why Do We Use the Orthographic Projection Representation? Orthographic projection representations give an accurate description of 3-D objects for engineering, manufacturing, and construction Isometric representations are limited due to using 2 dimensional medium to illustrate a 3- D object First-Year Engineering Program Session 4 P. 3 Defining Hidden and Center Lines for Hidden Line used to represent features that cannot be seen in the current view Centerlines used to represent symmetry and to mark the center of circles and the axes of cylinders, and the axes of symmetrical parts, such as cylinders and bolts First-Year Engineering Program Session 4 P. 4 For Example: 1. Visible 2. Hidden 3. Center First-Year Engineering Program...
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Orthographic Drawing skills_Rev110107 - First-Year...

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