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ME 101ME 101
ENGINEERING GRAPHICSENGINEERING GRAPHICS
Assist.Prof.Dr. Ouzhan YILMAZMechanical Engineering
Department
Room: [email protected]
http://www.gantep.edu.tr/~oyilmaz
The University of GaziantepThe University of Gaziantep
Orthographic ProjectionOrthographic Projection--II
Faculty of EngineeringFaculty of Engineering
Introduction and Objectives
Ortho_ Greek word meaning perpendicular.
A system of drawing to represent 3D objects by using
multiple-viewdrawings. In this system of projection, the 3D object
is projected perpendicularlyonto a projection plane with parallel
projectors.
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Objectives:
To understand the basic principles oforthographic projection To
be able to construct orthographicviews of simple objects To
visualize 3D objects from drawingsshowing their orthographic
views
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ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Projection Methods
Perspective projection Parallel projection
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Projection Methods: Parallel projections
OrthographicOrthographic ObliqueOblique
Line of sight is perpendicular to plane Line of sight is oblique
to plane
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Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Multi-view
FRONT view is the most descriptive view of the object. The view
that gives moreinformation about the object.
Rotate 90 degrees up to get top view
Rotate Back
Rotate 90 degrees clockwise to get right side
Glass-box approach
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Place the object in a glass box
Glass-box approach is used for developing orthographic
projection drawings
Project points on the front view of the glass-box
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Glass-box approach
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Glass-box approach
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Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
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Glass-box approach
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Projection Systems
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Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
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ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Projection Systems
Projection Systems
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ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Projection Systems
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Projection System symbols
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ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Projection Systems
Six principal views
Generally do not need all six to fully
describe the object.
A conventional Engineering Drawing
will normally have 2 to 3 views unless it
required more views to describe the
geometry/ profile.
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
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Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Conventional Orthographic Views
Height
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Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Conventional Orthographic Views
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Transferring dimensions
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Draw a miter line at 45 degrees
at a convenient distance to
produce the desired view.
ME 101ME 101
Dr. Ouzhan Ylmaz
Orthographic ProjectionOrthographic Projection
Transferring dimensions
Sketch light lines projecting depth locations forpoints to miter
line and then up into side viewas shown.
