Generally three views of an object are drawn, and the features and dimensions in each view accurately represent those of the object.
Multiview Projection Frontal Plane of Projection- Front View
Multiview Projection Frontal Plane of Projection- Front View Width Height
Multiview Projection Planes Horizontal plane of projection-Top View Width Depth
Multiview Projection Planes Profile plane of projection- Side View Height Depth
Multiview Projection Planes Advantages Multiview drawings provide the most accurate description of three dimensional objects and structure for engineering, manufacturing , and construction requirements. True shape and size.
Six Principal Views Six mutually perpendicular views. Front view- X Y Top view- Z X Right side view- Z Y Left side view- Z Y Rear view- Y X Bottom view- Z X
Six Principal Views Conventional View Placement Three-view multiview drawing. Standard views: Top Front Right side view
Six Principal Views Angle projection Third – US and Canada First – Europe Adjacent Views Related Views Central View
Line Conventions Hidden Lines Hidden features are represented by dashed lines. Holes - to locate the limiting elements. Surfaces - to locate the edge view of the surface.
Line Conventions Hidden Lines Change of planes - to locate the position of the change of plane or corner.
Line Conventions Center Lines Center lines are alternate long and short thin dashes and are used for the axes of symmetrical parts and features, such as cylinders and drilled holes.
Line Conventions Center Lines Center line usage follows standard drawing practices: Center lines for holes and slots locate limiting elements and any changes in planes. Center lines should not terminate at another line or extend between views. Very short, unbroken center lines may be used to represent the axes of very small holes. Center lines can indicate radial symmetry. Center lines do not break when they cross another line at or near 90 degrees. Center lines can be used as paths of motion.
Multiview Sketches One-view Two-view Three-view
Fundamental Views of Edges edge , or corner, is the intersection of two planes, and is represented as a line on a multiview drawing.
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- Spring '09
- Orthographic Projection, Parallel projection, Graphical projections, oblique projection