Understanding Axonometric Drawing Projections
Learn about Axonometric Drawing, its types, and examples. Explore the principles of projections like Isometric, Dimetric, and Trimetric. Understand how to represent dimensions and distances in Isometric Drawings.
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Presentation Transcript
PROJECTION CLASSIFICATION Projections Convergent Parallel Orthogonal Oblique Multiview Axonometric Perspective Drawing Pictorial drawing Multiview drawing
Axonometric Drawing Defintion It is show the three principal dimensions of an object in one view.
Axonometric Projection Rotate about vertical axis Tilt forward All edges foreshorten About( --- )time.
Axonometric Projection Type of axonometric drawing Axonometric axis a All angles are equal. 1. Isometric b c B A B Axonometric axis a D A C Two angles are equal. 2. Dimetric c b D C Axonometric axis a 3. Trimetric None of angles are equal. c b
Isometric Projection Rotate 45 about vertical axis Tilt forward (35o16 ) All edges foreshorten about 0.8 time.
Isometric Drawing Isometric drawing is a drawing drawn on an isometric axes using full scale. Isometric drawing (Full scale) Isometric projection (True projection) Forshorten Full scale
Distance in Isometric Drawing True-length distances are shown along isometric lines. Isometric line is the line that run parallel to any of the isometric axes. Nonisometric lines Isometric axes
Example 1 : Object has only normal surfaces Top H Front View Side View H Front Side W D Top View D W
Example 2 : Object has inclined surfaces D Nonisometric line y H y x Front View x W
x Example 3 : Object has inclined surfaces x B A C x y x C B A Nonisometric line y A B C
Irregular Curve in Isometric Steps 1. Construct points along the curve in multiview drawing. 2. Locate these points in the isometric view. 3. Sketch the connecting lines.
