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# Orthographic Projection .

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Orthographic Projection. Lecture 09/28/04. Question of the Day. For what inventions did Charles Kettering receive patents? Where did he earn his engineering degree?. ANSWER:. The automobile self-starter and the ignition system.
Transcripts
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﻿Orthographic Projection Lecture 09/28/04

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Question of the Day For what creations did Charles Kettering get licenses? Where did he win his building degree? Reply: The vehicle self-starter and the start framework Kettering was a Buckeye and earned his designing degree from Ohio State. His organization was Delco and now is called Delphi

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Orthographic Projections Reference: Technical Graphics, Chap 3: Advantage – Represent components of a question all the more precisely Example Problem

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Orthographic Projection Orthographic Projection is a gathering of 2-D drawings that cooperate to give an exact general protest.

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Defining the Six Principal Views or Orthographic Views

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Which Views to Present? General Guidelines Pick a Front View that is most expressive of question Normally the longest measurement is picked as the width (or profundity) Most basic blend of perspectives is to utilize: Front, Top, and Side View Any other view not the same as the Principal Views is called Auxiliary View (see 3.15 in the Technical Graphics content)

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Glass-Box Approach - Introduction Most capable strategy to comprehend orthographic projections Suspend the protest with straightforward strings inside a glass box Freeze the view from every heading (each of the six sides of the crate) and unfurl the case Animation outlines glass-box approach

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Glass Box Theory This perception instrument is accessible on the FEH site: Go to FEH Home Page ( http://feh.eng.ohio-state.edu ) ��  Click on "Address Notes" ��  Chose "Building H191" from Autumn 2004 ��  Glass Box liveliness is accessible there

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Glass-Box Approach Continued

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Glass-Box Approach Continued

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Glass-Box Approach Continued

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Glass-Box Approach Continued

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Glass-Box Approach Continued

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Glass-Box Approach Continued

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Third-edge Projection First-edge Projection First Angle (International) versus Third Angle (U.S.) Projection From Fundamentals of Graphic Communications by Bertoline, McGraw-Hill

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Width Top View Depth Right Side View Front View Height Conventional Orthographic Views

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Hidden Line – used to speak to elements that can\'t be found in the present view Centerlines – used to speak to symmetry and to check the focal point of circles and the tomahawks of barrels, and the tomahawks of symmetrical parts, for example, chambers and jolts Defining Hidden and Center Lines for Orthographic Projections

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Example Center Lines Visible Line Hidden Lines

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Precedence of Lines 0.6 mm 0.3 mm 0.3 mm

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Example: Application of Precedence

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Gap Conventions for Intersection of Lines in Orthographic Projections Solid Line Intersections Dashed Line Intersections Reference – Technical Graphics, Chapter 3

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Two-View Drawings Some items can be completely depicted by two perspectives, search for: Symmetry or Bodies of Rotation Front View Right Side View Right Side Front View

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Other Two-View Examples

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Summary Introduced to orthographic projections We prescribe the product liveliness practice presented in class. Liveliness can be found on WebCT – Glass Box Theory.

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Review Questions Rectilinear networks are utilized for portraying isometric pictorials … True/False Based on the observable pathways, orthographic projection drawings are delegated a ____ projections There are ____ standard central perspectives of orthographic projections Each view in an orthographic projection focuses on ____ measurements of the protest

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Hints for Orthographic Projection Sketching Identify the significant elements and general measurements of the question Do not utilize any straight-edge gadgets as a pencil guide when outlining by hand Start by drawing bouncing boxes with light development lines. Keep sees adjusted while outlining

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Tips for Drawing Assignments Title Information is required – take after traditions Usage of development lines is supported. Compulsory for circle or oval Orthographic projection : Alignment of the perspectives is critical! Won\'t be reviewed, if not adjusted

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Sketching a Circle Draw a square whose sides are the distance across of the circle. 2. At the focal point of every side characterize the purpose of intersection for the circle. 3. Draw the diagonals of the square. 4. Situate the paper so you can attract meet curves to develop the circle

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Hints for Orthographic Projection Sketching Map slanted and diagonal appearances to each of the three perspectives Follow the priority of lines Darken all noticeable, covered up, and focus lines

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Assignment Drawing 7: B11 in course parcel Due Today Drawing 8: TG 2.6 & 2.19 Due on next address day

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