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P roject FUNDA Hear it Learn it Let’s make engineering more easy Join us

P roject FUNDA Hear it Learn it Let’s make engineering more easy Join us. Engineering Graphics- Basics. Overview of an Engineering Drawing. GRAPHICS LANGUAGE. Effectiveness of Graphics Language. 1. Try to write a description of this object. 2. Test your written description

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P roject FUNDA Hear it Learn it Let’s make engineering more easy Join us

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  1. Project FUNDA Hear it Learn it Let’s make engineering more easy Join us Engineering108.com

  2. Engineering Graphics- Basics Engineering108.com

  3. Overview of an Engineering Drawing Engineering108.com

  4. GRAPHICS LANGUAGE Engineering108.com

  5. Effectiveness of Graphics Language 1. Try to write a description of this object. 2. Test your written description by having someone attempt to make a sketch from your description. You can easily understand that … The word languages are inadequate for describing the size, shape and features completely as well as concisely. Engineering108.com

  6. DRAWINGS ( A Graphical Representation) The Fact about: If compared with Verbal or Written Description, Drawings offer far better idea about the Shape, Size & Appearance of any object or situation or location, that too in quite a less time. Hence it has become the Best Media of Communication not only in Engineering but in almost all Fields. Engineering108.com

  7. Composition of Graphic Language Graphic language in “engineering application” use lines to represent the surfaces, edges and contoursof objects. The language is known as “drawing” or “drafting” . A drawing can be done using freehand, instruments or computer methods. Engineering108.com

  8. Example Freehand drawing The lines are sketched without using instruments other than pencils and erasers. Engineering108.com

  9. Example Instrument drawing Instruments are used to draw straight lines, circles, and curves concisely and accurately. Thus, the drawings are usually made to scale. Engineering108.com

  10. Example Computer drawing The drawings are usually made by commercial software such as AutoCAD, solid works etc. Engineering108.com

  11. Engineering Drawing Engineering108.com

  12. Graphics language Describe a shape(mainly). Word language Describe size, location andspecification of the object. Elements of Engineering Drawing Engineering drawing are made up of graphics language and word language. Engineering108.com

  13. Geometric construction Line types Projection method Lettering Basic Knowledge for Drafting Word language Graphics language Engineering108.com

  14. Drawing Standard Engineering108.com

  15. Standardsare set of rules that govern how technicaldrawings are represented. Drawing standards are used so that drawings convey the same meaning to everyonewho reads them. Engineering108.com

  16. Full name Country Code USA American National Standard Institute ANSI Japanese Industrial Standard Japan JIS British Standard UK BS Australian Standard Australia AS Deutsches Institut für Normung Germany DIN International Standards Organization ISO Standard Code Engineering108.com

  17. Drawing Sheet A4 Trimmed paper of a size A0 ~ A4. A3 Standard sheet size (JIS) A4 210 x 297 A3 297 x 420 A2 420 x 594 A1 594 x 841 A0 841 x 1189 A2 A1 A0 (Dimensions in millimeters) Engineering108.com

  18. Drawing Scales Designation of a scale consists of the word “SCALE” followed by the indication of its ratio, as follow SCALE 1:1 for full size SCALE X:1 for enlargement scales SCALE 1:X for reduction scales Engineering108.com

  19. Continuous thick line Visible line Dimension line Extension line Leader line Continuous thin line Dash thick line Hidden line Chain thin line Center line Basic Line Types Name according to application Types of Lines Appearance NOTE : We will learn other types of line in later chapters. Engineering108.com

  20. Meaning of Lines Visible linesrepresent features that can be seen in the current view Hidden linesrepresent features that can not be seen in the current view Center linerepresents symmetry, path of motion, centers of circles, axis of axisymmetrical parts Dimension and Extension linesindicate the sizes and location of features on a drawing Engineering108.com

  21. Example: Line conventions in engineering drawing Engineering108.com

  22. Traditional Drawing Tools Engineering108.com

  23. DRAWING TOOLS Engineering108.com

  24. DRAWING TOOLS 1. T-Square 2. Triangles Engineering108.com

  25. DRAWING TOOLS 2H or HB for thick line 4H for thin line 3. Adhesive Tape 4. Pencils Engineering108.com

  26. DRAWING TOOLS 5. Sandpaper 6. Compass Engineering108.com

  27. DRAWING TOOLS 7. Pencil Eraser 8. Erasing Shield Engineering108.com

  28. DRAWING TOOLS 9. Circle Template 10. Tissue paper Engineering108.com

  29. DRAWING TOOLS 11. Sharpener 12. Clean paper Engineering108.com

  30. Lettering Engineering108.com

  31. - shape - space between letters and words Legibility - size- line thickness Uniformity Text on Drawings Text on engineering drawing is used : To communicate nongraphic information. As a substitute for graphic information, in those instance where text can communicate the needed information more clearly and quickly. Thus, it must be written with Engineering108.com

  32. Dimension & Notes Title Block Notes Example Placement of the text on drawing Engineering108.com

  33. Use only a vertical Gothic text style. Use a Gothic text style, either inclined or vertical. Use both capital and lower-case letters. Use all capital letters. Use 3 mm for most text height. Same. For letters in title block it is recommend to use 5~8 mm text height Space between lines of text is at least 1/3 of text height. N/A.Follows ANSI rule. Lettering Standard ANSI Standard This course Engineering108.com

  34. Stroke Sequence T F L I E H Engineering108.com

  35. Stroke Sequence V X W Engineering108.com

  36. Stroke Sequence Z M K N 4 Y A Engineering108.com

  37. Stroke Sequence G Q C O Engineering108.com

  38. Stroke Sequence U P B D R J 1 2 Engineering108.com

  39. Stroke Sequence 7 5 Engineering108.com

  40. Stroke Sequence 6 0 3 S 8 9 Engineering108.com

  41. Stroke Sequence i l Engineering108.com

  42. Stroke Sequence w x k v z Engineering108.com

  43. Stroke Sequence y f t j r Engineering108.com

  44. Stroke Sequence o a b c d p q e Engineering108.com

  45. Stroke Sequence n m h g u s Engineering108.com

  46. Example : Good and Poor Lettering GOOD Not uniform in style. Not uniform in height. Not uniformly vertical or inclined. Not uniform in thickness of stroke. Area between letters not uniform. Area between words not uniform. Engineering108.com

  47. Sentence Composition Leave the space between words equal to the spacerequires for writing a letter “O”. Example O ALL DIMENSIONS O IN O ARE MILLIMETERS UNLESS O SPECIFIED. O OTHERWISE Engineering108.com

  48. Large Circle • Place the little finger (or pencil’ s tip) at the center as a pivot, and set the pencil point at the radius-distance from the center. • Hold the hand in this position and rotate the paper. Engineering108.com

  49. ♣ The following figures illustrates the Aligned system of dimensioning: Engineering108.com

  50. Engineering108.com

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