The figure or view formed by joining, in correct sequence, the points at which these lines meet the plane is called the Projection of the object The lines or rays drawnENGINEERING DRAWING PLANE AND SOLID GE O M ETRY By N D Bhatt Edition 53rd Edition 15 (Reprint) ISBN 963 Size 170 mm × 235 mm Binding Paperback with Four color Jacket Cover Pages 7 16 ` About the book CoNteNt The book provides all aspects and detailed study of Engineering Drawing— Plane and 1 DRAWING INSTRUMENTSEngineering Drawing (Web) Syllabus;
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Projector line in engineering drawing-HP, draw the X 1Y 1 line inclined at q to the XY line at any convenient distance from p' Since point P is at a distance n infront of VP, the auxiliary top view p 1 will also be at a distance n from the X 1Y 1 line Therefore, mark P 1 by measuring o 1p 1=op = n on the projector drawn from p' perpendicular to the X 1Y 1 lineEngineering Drawing Engineering Drawing is semester 2 subject in first year of engineering under Mumbai University Objectives for the subject Engineering Drawing is to impart and inculcate proper understanding of the theory of projection To impart the knowledge of reading a drawing To improve the visualization skill
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Projection of Lines Line parallel to one or both planes Line on a plane Projection of Lines Line perpendicular to one of the planes Projection of Lines Line inclined to HP & parallel to VP Engineering Drawing Author Anup Ghosh Created Date 8/5/11 PMWhen drawn under these guidelines, the lines parallel to these three axes are at their true (scale) lengths Lines that are not parallel to these axes will not be of their true length Figure 2 An Isometric Drawing Any engineering drawing should show everything a complete understanding of the object should be possible from the drawingProjection Methods Universally either the 1 st angle projection or the third angle projection methods is followed for obtaining engineering drawings The principal projection planes and quadrants used to create drawings are shown in figure 16 The object can be considered to be in any of the four quadrant
Draw one projector for a' & a Locate a' 10 mm above xy & Tv a 15 mm below xy Step 2 Draw a line 45 o inclined to xy from point a and cut TL 75 mm on it and name that point b 1 Draw locus from point b 1 Step 3Ortho Graphic Projection In the engineering industry communication between the drawing office and the work shop is achieved mainly by means of engineering drawings The principal method used to prepare these drawings is known as Ortho Graphic ProjectionVp, draw it's projections,find TL, inclinations of line with Hp & Vp SOLUTION STEPS 1Draw xy line and one projector 2Locate a' 10 mm above xy and a 15 mm below xy line 3Draw locus from these points 4Draw Fv 500 to xy from a' and mark b' Cutting 55mm on it 5Similarly draw Tv 600 to xy from a & drawing projector from b'
The orthographic projection is derived from the principles of descriptive geometry and is a twodimensional representation of a threedimensional object It is a parallel projection (the lines of projection are parallel both in reality and in the projection plane) It is the projection type of choice for working drawingsEngineering drawing example Types of Drawings All Drawings Artistic Technical Sketches Diagrams Drawings (conceptual) (design & technical) (technical/engineering) simulated perspective Diagram Diagram Oblique Isometric Multi view (design plan) (technical) orthographic projection projection Less technical More technical Conceptual Sketches • When any idea comes in your mind, you draw Dimension, Projection, Leader, Hatching Lines Dimension, Projection, Leader, Hatching type lines must be drawn thin and continuous The extension lines for dimensioning should run from the outlines without leaving a gap and extend beyond the dimension lines This type is also used to draw outlines of adjacent and revolved sections
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This video will let you learn ED chapter 2 "Projection of Lines"good for Btech first year studentsBhuiyan Shameem Mahmood 11 Engineering Drawing Introduction An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc Its purpose is to accurately and unambiguously capture all First angle and third angle projection are the types of Orthographic projection systems that are used to draw engineering drawings The 1st angle projection system is more popular in European countries Whereas 3rd angle projection is more popular in North America and Asian countries
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Available from Lec 1; Engineering Drawing First angle projection and Third Angle Projection Engineering Drawing is the language of Engineers Having a good communication skill is one important qualities for a successful career If you want yourself to be a Successful Engineer sound knowledge in Engineering Drawing is a MustThe imaginary lines drawn from the object to the plane are called projectors or projection lines The plane on which the projection of the object is taken is called plane of projection
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32 Drawing sectional views In orthogonal to complete of an ng Intemally of a The of C line to Nhlch it The of a lire (type A) FIGURE PART OR LOCAL SECTIONS Part at a to detail of, type u normal the maln m drawings in this THE FULL SECTIONAL VIEW the d FIGURE 310 ALIGNED SECTIONS In to detail a plane, a is 12 an eric of a which cut and apartProjections of line True length, True inclinations, Traces of lines;Modules / Lectures Projection of Lines Inclined to HP and VP;
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ME 111 Engineering Drawing Lecture 7 Projection of Lines and 2 Projection of Planes Indian Institute of Technology Guwahati Guwahati – Projections of Lines 3 Line inclined to HP and VP Apparent Inclinations a and b Apparent Lengths ab, abThe continuous thin line is the most frequently used line type on Engineering Drawings These lines are solid and has no break in them Here is the list of cases where the continuous thin line will be used Imaginary lines of intersectionME 111 Engineering Drawing Lecture 5 Orthographic projection and 1 Projection of Points Indian Institute of Technology Guwahati Guwahati – Orthographic Projection A parallel projection technique in which the plane of • Draw the projector line
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Horizontal plane of projection is the plane onto which the Top View of the multiview drawing is projected In multiview drawings, the right side view is the standard side view used The right side view of an object shows the depth and the height dimensions Click to see full answerDraw the X1Y1 line at a distance of 70 mm on the right side of the front view Through 0 the point of intersection of XY and X1Y1, lines draw a 45° line Draw the horizontal projector through a(b) to cut the 45 degree line at m Draw the horizontal projectors through a' and b' to intersect the vertical projector drawnCoordinated by IIT Guwahati;
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For obtaining the image of an object, various points on the contour of an object, are thrown forward on to a plane by means of straight lines or visual rays The figure formed by joining various points thus obtained on the plane, is the image of the object and is called Projection projections engineering drawing 1 Projections and clipping in 3D 2 Viewing and projection Objects in WC are projected on to the view plane, which is defined perpendicular to the viewing direction along the zvaxis The two main types of projection in Computer Graphics are • parallel projection • perspective projection Draw the given Fv & Tv as per the given information in problem 2 Then among all lines of Fv & Tv select a line showing True Length (TL) (It's other view must be // to xy) 3 Draw x1y1 perpendicular to this line showing TL 4 Project view on x1y1 ( it must be a line view) 5 Draw x2y2 // to this line view & project new view on it
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What is horizontal plane in engineering drawing?Projection of a Point in the IVQuadrant Point D 30mm below the HP and 40 mm in front of the VP 1 Draw the reference line XY and name it as VP and HP respectively above and below the XY line 2 Draw a line perpendicular to XY 3 On the perpendicular line mark a point 'd' 40mm below XY(Top view) 4Objectives To know about different types of lines & use of different types of pencils in an Engineering Drawing To know how to represents letters & numbers in drawing sheet To know projection of points ,straight lines, solids etc To know development of different types of surfaces To know about isometric projection
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PROJECTION OF LINES SH 1132 Engineering Graphics FY B Tech TRACES OF A LINE Definition When a line is inclined to a plane, it will meet that plane, produced if necessary The point where the line or line produced meets the plane is called trace Thus projection of a straight line is the foundation of Engineering Drawing projections of two points gives the projection of the straight line joining the two points From q' draw a projector (perpendicular line) to intersect the horizontal line drawn from p at q 7 pq is the required Top View 8ME 111 Engineering Drawing Lecture 8 1 Projection of Planes Indian Institute of Technology Guwahati Guwahati –
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These letters are used to represent a point, ends of a straight line, corners of solid etc Actual projections in top and front views are drawn in thick lines, construction lines and projectors are drawn using thin lines Top view is also known as plan and front view is known as elevation PROJECTION OF A POINT IN FIRST QUADRANT Projection of straight line engineering drawing 1 PROJECTIONS OF STRAIGHT LINES Definition of Straight line A straight line is the shortest distance between two points Top views of two end points of a straight line, when joined, give the top view of the straight line Herein, what is projection in engineering drawing?
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Oblique projection is a kind of parallel projection it anticipates a picture by converging parallel beams (projectors) from the threedimensional source object with the drawing surface (projection plane) In both slanted projection and orthographic projection, parallel lines of the source article produce parallel lines in the anticipated picture Projection lines are extensions of lines that assist in 2D drawing You can use projection lines to help you create new geometry, and any constraints you create with them remain active even after you turn projection lines off BesideProjection of Points & Lines in Engineering drawing Free download as Powerpoint Presentation (ppt / pptx), PDF File (pdf), Text File (txt) or view presentation slides online Download the original presentation for animation and clear understanding This Presentation describes the concepts of Engineering Drawing of VTU Syllabus However same can also be used for learning drawing
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The space in front of us is considered to be (imagined to be) divided into four equal parts These parts are called quadrants or dihedral anglesThese are formed by using a Vertical plane and a Horizontal plane intersecting each other at right ang The object is drawn from the front view, and then the other areas are added in relation to it It can be divided into two types based on the scaling of the object cavalier projection, which uses a 11 scale, and cabinet projection, which uses a 21 scale It uses parallel lines to produce the source of the object in the image 4
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