Which Views to Present? The arrow indicate the direction from which the front view should be observed. Draw the projection lines and complete the front view. General Guidelines • Pick a Front View that is most descriptive ! Pattern of planes & Pattern of views Methods of drawing Orthographic Projections Different Reference planes are FV is a view projected on VP. Defining the Six Principal Views or Orthographic Views. They build shapes using cube blocks and then draw orthographic and isometric views of those shapes—which are the side views, such as top, front, right—with no depth indicated. •Orthographic projections are an engineer’s language for conveying the shape and size information about the products he designs. 2.2.1) The Six Principle Views The 6 principle views of an orthographic projection are shown in Figure 2-2. Orthographic Projections • Orthographic Projections are a collection of 2-D drawings that work together to give an accurate overall representation of an object. ((˘ ˇ ) (* ˇ ( . EXAMPLES AND EXERCISES ORTHOGRAPHIC PROJECTION mod- 1 - ORTHOGRAPHIC PROJECTION Orthographic or Orthogonal Projection or sometimes called Working Drawing is a system of drawings obtained in which the object is viewed at right angle and projected on to a perpendicular plane. • An orthographic projection consists of the view obtained view when the object is viewed from very far away, so that the resulting rays are all parallel. "# "$ "˜ ˝ ˇ˛% ˆˆ& ˝ ˆˆ " # ’ !˝7 ˆ (˘ ˇ # ,!˝7 ˆ (˘ ˇ Projections • Behind every 2D drawing of an object is a . "# "$ "˜ ˝ ˇ˛% ˆˆ& ˝ ˆˆ " # ’ . Chapter 2: Orthographic Projection 2 - 2 Figure 2-1: Orthographic projection. • The parallel rays that are used for constructing the views are called projectors. ORTHOGRAPHIC PROJECTIONS: Horizontal Plane (HP), Vertical Frontal Plane ( VP ) Side Or Profile Plane ( PP) Planes. Normally the longest dimension is chosen as the width (or depth) ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 157fd0-Mjc1M The following pages contain information and exercises about ORTHOGONAL / ORTHOGRAPHIC DRAWING Term used in Victoria Term used in New Zealand ISOMETRIC DRAWING They can be used for: Exercises in class if appropriate, maybe as a quick 10 minute exercise at the beginning of a … involving the object and three “ imagined” things: – The observer’s eye, or station point – The plane of projection – The projectors (also called visual rays or lines of sight) STEP 1 First of all observe the isometric object given to you. Each principle view is created by looking at the object in the directions indicated in Figure 2-2 and drawing what is seen as well as what is hidden from view. Students learn how to create two-dimensional representations of three-dimensional objects by utilizing orthographic projection techniques. Prof. Krishna Jonnalagadda ME 119: ENGINEERING DRAWING 1.ORTHOGRAPHIC PROJECTION (SOLUTION) PROBLEM 1: Draw the front view, top view and a suitable side view of the object given below. ((˘ ˇ ) (* ˇ! space relationship. (In Greek : … orthographic projections of an actual piping system. The challenge of creating piping orthographics is that symbols must be used to represent 90° elbows or tees pointing toward or away from the viewer. Figure 7 identifies the possible orthographic projection views that could be used to represent an elbow fitting. TV is a view projected on …

orthographic projection exercises ppt

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