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The oblique projection is a simple type of graphical projection used for producing the pictorial and 2-D images of 3-D objects.

N.D Bhatt Engineering Drawing 50th edition

All these views are known as front view, top view and right side view. Its end goal is to convey the information bhat will allow a manufacturer 550th produce bhqtt component. This projection is a type of axonometric projection.

Although six different sides can be drawn three sides of a drawing give enough information to make a three-dimensional object. However, the terms are becoming an anachronism since most copies of engineering drawings that were made using a chemical-printing process that yielded graphics on blue-colored paper or of blue-lines on have been superseded by more modern reproduction processes that yield black or multi-color lines on the white paper.

The appearances of views may be of as being projected onto planes that form a six-sided box around the object. Despite of the fact that auxiliary views are projected onto planes which are inclined to the principal projection edihionthey are still classified as orthographic-views. Friday, 24 June D Bhatt Engineering Drawing 50th edition. Isometric Projection The isometric projection shows the object from the angles in which the scales along each axis of the object are equal.

Once a given view showing the surface as a line is identified. It is usually created in accordance with standard conventions for layout, nomenclatureinterpretationappearanceetc.

Example of the orthographic projection is of an upside down vehicle: Share to Twitter Share to Facebook. Different types of projections: The following example shows the elevation of a slab of wood having the raised panel.


It is further divided into Multiview Orthographic projections bhat Axonometric projection. It can now be produced using computer technology. The other two types of axonometric projection bd.

Newer Post Older Post. This projection shows that the object as it looks from the front, rightleft, top, bottom, or back, and are positioned relative to each other according to the rules of either first-angle or third-angle projection.

Complete auxiliary views are not commonly drawn in industry. The auxiliary view is an orthographic view that is projected into any plane other than one of the 6 principal views.

The views are used when an object contains some sort of the inclined plane. Multiview Orthographic Drawwing With this projectionupto six pictures of an object are producedwith each projection plane parallel to one of the co-ordinate axes of object. The most characteristic features of this projection are that objects are drawn: The process of producing engineering drawingand the skill of producingis often refered to as srawing drawingalthough technical drawings are also required for disciplines that would not ordinarily be thought as parts of engineering.

The following example shows the oblique projection of a camera. The Perspective projection is edituon approximate representation on a flat surfaceof the image perceived by the eyes. Orthographic projection is a way of representing a 3-dimensional object in two dimensions. All Entertainment 10 March at With this projectionupto six pictures of an object are producedwith each projection plane parallel to one of the co-ordinate axes of object. Since most of the other surfaces will be fore-shorteneda complete auxiliary-view becomes more difficult to read.

It is a form of parallel projectionhere the view direction is orthogonal to the projection plane, resulting in enfineering plane of the scene appearing in affine transformation on viewing surface. All views are not necessarily used, and determination of surface constitutes the front, back, top and bottom varies depending on projection used. edihion

Click here to download full Book Download. This plane is either turned down into the horizontal plane or is wheeled into the vertical plane. The other two types of axonometric projection are: Thus when reading lines on the object in this view adjacent to a principal viewthe same rules apply to reading lines in adjacent principal-views. The more generic term “Print” is in common usage in the U.


The LOS are still parallel to each other and perpendicular to the plane of projection. Drawing The engineering drawing is a type of technical drawingcreated within the technical drawing disciplineand is used to define the requirements for engineered items. The 3-D object is projected into 2-D “paper” space as if you were looking at an X-ray of object: Posted by Ali Raza at To utilize this view to show a surface true sizea view must exist or be drawn where that surface appears as a line.

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Here in both the oblique-projection and the orthographic-projectionparallel lines of source object produce parallel lines in the projected image. Engineered computer models can also be printed in 3-dimensional form using special 3 D printers.

It is not possible to show an oblique surface in a primary auxiliary view. The true size and shape of any feature in a technical drawings can only be known when the Line of Sight is perpendicular to the plane which is considered as reference.

Drawings are extracted from 3-dimensional computer models and can be printed as 2-dimensional drawings on various media formats. Click here to download full Book Download Engineering drawings are often referred to as “Blueprints”. It is much more common to see partial auxiliary-views that show only TS features. Using the auxiliary view allows for inclined plane to be projected in true size and shape. Perspective Projection The Perspective projection is the approximate representation on a flat surfaceof the image perceived by the eyes.

The views are positioned relative to each other according to either of two schemes – first angle or third angle projection.