engr 111c_08_2_08c_otey

engr 111c_08_2_08c_otey - ENGR 111 Fall 2008 Class 8.2...

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Drawing Pictorials using AutoCAD Class 8.2 October 16, 2008 ENGR 111 Fall 2008
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Learning Objectives Use AutoCAD to draw a pictorial of an object given orthographic views of the object Select the best orientation of an object in pictorial Define what makes a drawing a: cavalier oblique, cabinet oblique, general oblique, isometric, axonometric, perspective, or orthographic views Use AutoCAD to generate Isometric Drawings of objects given the orthographic views of the object.
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RAT 1. To draw a line 3 units long at an angle of 30 degrees from the x axis what is Cmd line prompt? 2. In order to access the isometric mode in AC, you must adjust what settings? 3. You select line Comand in AC, select point on sheet-type 5 –then hit enter –AC will?
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Types Obliques Cavalier Cabinet General Axonometrics Isometrics Dimetric Trimetric Perspectives 1,2,or 3 point
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Cavalier Oblique Front view true size Receding Axis Angle (Normally 30°, 45° or 60°). Depth dimension (receding axis) true size.
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Cabinet Oblique Front view true size Receding Axis Angle (Normally 30°, 45° or 60°). Depth dimension (receding axis) half size
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General Oblique Front view true size Receding Axis Angle (Normally 30°, 45° or 60°)°. Depth dimension (receding axis) between half (D/2) and full size (D)
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Angles in Oblique Angles in front view are drawn true size Other angles must be located using coordinates Appearance of angles may be distorted
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Obliques Obliques are theoretical drawings. In reality, you can not actually view an object as an Oblique Thin parts look very good as Obliques Parts with angular features on multiple planes are difficult to draw as Obliques
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Circles in Oblique Drawn true size in front view Drawn as ellipses on receding planes Layout using a Rhombus
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engr 111c_08_2_08c_otey - ENGR 111 Fall 2008 Class 8.2...

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