MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW...

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Transcript of MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW...

Page 1: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object
Page 2: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

MULTIVIEW SKETCHING AND PROJECTION

View of Objects: In engineering graphics a view of an object is created by orthographic projection. In Orthographic projection, rays (or projectors) from all points on the edges or contours of the object extend parallel to each other and perpendicular to the plane of projection.

Page 3: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

Visually views of objects are obtained by looking perpendicularly in the direction of the arrows shown on the following isometric drawings.

Page 4: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

A fixed object can be looked at from six different positions:

- Front, - Top, - Bottom, - Right, - Left, and - Back (or Rear).

Page 5: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

The object can also be turned and revolved to look at and produce the six basic views as in following

Page 6: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

Fixed or turned the object will yield the following projected views. To make the drawing easier to read, the views must be arranged on the paper according to the drafting standard.

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SIX VIEWS but mostly only three needed.

Page 8: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

THE GLASS BOX METHOD: One way to understand the standard arrangement of the views on the sheet paper is the glass box.

Page 9: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

Unfolding the Glass box:

1) Think of all the planes except the rear plane as hinged to the frontal plane. (The rear plane is usually hinged to the left side plane).

2) Each plane folds out away from the frontal plane.

Page 10: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

Glass Box Unfolded: The positions of these six planes after they have been unfolded give the standard arrangement of the views of the object.

Page 11: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

VIEWS LAYOUT.

TRANSFERRING OF DEPTH DIMENSIONS.

Page 12: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object

STEPS IN SKETCHING VIEWS.

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SPACING BETWEEN VIEWS.

Page 14: MULTIVIEW SKETCHING AND PROJECTION - Union Collegetchakoa/mer101/orto_projection2.pdf · MULTIVIEW SKETCHING AND PROJECTION View of Objects: In engineering graphics a view of an object