engr111-ac-ortho

engr111-ac-ortho - Orthographics in AutoCAD Class 11.1...

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Orthographics in AutoCAD Class 11.1
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Learning Objectives Name the three principle projection planes and the dimensions that each one shows Use AutoCAD to create orthographic views of objects Know the correct line weights for printing drawings from AutoCAD
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Orthographic Projection 2 Dimensional projections on Orthogonal planes Show lines based on change of plane or change of material Use multiple linetypes Visible Hidden Center
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Describing a “Notched Wedge” A relatively simple object Pictorial view may be difficult
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Glass Box Concept Envision the object surrounded by a glass box Project the views out onto the glass panes Each pane shows a 2D projection of the object
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Projection Planes The three panes of glass represent the principal orthographic planes Horizontal Frontal Profile Each plane illustrates two of the principal dimensions of: HEIGHT, WIDTH or DEPTH
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Converting to Orthographics By unfolding the box, you generate the FRONT, TOP, and RIGHT SIDE views Others (Back, Bottom, Left Side) could also be created if needed
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Completed Orthographics
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Linetypes Visible (0.6 mm) Hidden (0.3 mm) Center (0.3 mm) Construction (0) For smaller sized pages/drawings using 0.4 mm and 0.2 mm will improve the appearance of the drawings. While this is contrary to the standard, this is the way our drawings are set to print using AutoCAD.
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Paired Exercise 6.2.1 Sketch three orthographic views of the object shown on the next slide. Include visible, hidden, and centerlines where appropriate. Use the grid paper from the back of your workbook or your engineering sketch pad. Resize so that it approximately fills the page and round sizes to the nearest box. DRAW LANDSCAPE!! (10 MIN)
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Object for Exercise 6.2.1
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Solution
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AutoCAD commands Review Drawing setup SNAP GRID Display control ZOOM PAN Drawing LINE DTEXT CIRCLE ARC Editing and inquiry ERASE DDEDIT UNDO Modify properties Grips General Concepts Layers Ortho Mode
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This note was uploaded on 02/15/2010 for the course ENGR 111 taught by Professor Walker during the Fall '07 term at Texas A&M.

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engr111-ac-ortho - Orthographics in AutoCAD Class 11.1...

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