What are the principles of orthographic projection?
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What are the principles of orthographic projection?
The primary views used are called the Elevation, Plan and End Elevation and are produced by projecting an image of the object as viewed by a spectator standing at infinity on to the Planes of Reference which are then folded flat to produce a 2-D drawing.
What are the principle dimensions found in the front view of an orthographic drawing?
The three principal dimensions of an object are width, height, and depth. The front view shows only the height and width of the object and not the depth.
How many principles that we need to consider in constructing orthographic projection or drawing?
There are six basic views: top, front, bottom, back, right side and left side. The most commonly used are top, front and right side views.
What are the three principal views of orthographic drawings?
Although six different sides can be drawn, usually three views of a drawing give enough information to make a three-dimensional object. These views are known as front view, top view and end view. Other names for these views include plan, elevation and section.
What is orthographic projection in drawing?
orthographic projection, common method of representing three-dimensional objects, usually by three two-dimensional drawings in each of which the object is viewed along parallel lines that are perpendicular to the plane of the drawing.
What are the 3 planes of projections in orthographic?
These include the Frontal Plane, Profile Plane, and Horizontal Plane: In addition to this, if a plane is placed at any other place, then it is called Auxiliary Plane. These are used to draw inclined surfaces of an object.
What are the steps in orthographic drawing?
Steps used to create an orthographic projection
- Choose a front view.
- Decide how many views are needed to completely describe the object.
- Draw the visible features of the front view.
- Draw projectors off of the front view horizontally and vertically in order to create the boundaries for the top and right side views.
What is meant by oblique plane and auxiliary plane?
Simply, the plane other than the Principal Plane ( i.e. Horizontal Plane, Vertical Plane or Perpendicular Plane) is called Auxiliary Plane. Often one of the six principal views does not completely describe an object. This is justifiable when there are inclined or oblique planes or features on an object.
What is the difference between primary and secondary auxiliary views?
Primary auxiliary views are projected off one of the principal views. Secondary auxiliary views are projected off a primary auxiliary view. Classifications: Auxiliary views are created by positioning a new line of sight relative to the object.
What are the 6 types of auxiliary views?
Auxiliary views are used to find: 1) true length of an inclined or oblique line; 2) true size and shape (TSS) of an inclined or oblique face 3) edge view of oblique face; 4) point view of inclined or oblique line; 5) true size and shape of features on incline or oblique faces.
What is a Miter line?
A miter line (OE in the figure) offers a convenient method of laying out a third view while you are in the process of drawing two views. Place the miter line (OE) to the right of the top view at a convenient distance, keeping the appearance of a balanced drawing.
What is auxiliary projection drawing?
An auxiliary view is simply a “helper” view, which shows the slanted part of the object as it actually is. It turns, or projects, the. object so that the true size and shape of the surf ace (or surfaces) are seen as they actually are. Auxiliary views are commonly found on many types of industrial drawings.
