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Engineering Drawing • 1. Drawing Describing any object/ information diagrammatically Engineering Drawing Graphical means of expression of technical details without the barrier of a language. Caterpillar B15 Pc Software here. Universal language for engineers • Diagrams/sketches/pictures – communication skills • We grasp information easily if it is illustrated with diagrams, sketches, pictures, etc. LCA - the world's smallest, light weight, multi-role supersonic combat aircraft of the world • Source: AIRBUS A380 Details: largest passenger jet.
80m wingspan and a tail that stands as high as a seven-storey building, carries more than 550 passengers. • It would just be impossible to communicate all necessary details about the LCA/ Airbus A380 verbally or in writing – Illustration (picture/drawing) is useful. • A picture/drawing is worth a thousand words. • The LCA/Airbus A380 would be impossible to create without computer graphics and drawing models.
•Drawings are the road maps which show how to manufacture products and structures. • Impossible to describe the details of the building • Difficult to describe the details of the machine • Chemical reactor • Electrical circuit • Drawing is important for all branches of engineering. • Graphical representation of an object – Drawing • Engineering drawing – A drawing of an object that contains all information -like actual shape, accurate size,manufacturing methods, etc., required for its construction. -No construction/manufacturing of any (man -made) engineering objects is possible without engineering drawing.
• What will you learn in this course? You will learn - How industry communicates technical information. • Visualization – the ability to mentally control visual information. • Graphics theory – geometry and projection techniques. • Standards – set of rules that govern how parts are made and technical drawings are represented.
• Conventions – commonly accepted practices and methods used for technical drawings. • Tools – devices used to create technical drawings and models.
• Applications – the various uses for technical drawings. • Engineering drawing is completely different from artistic drawing, which are used to express aesthetic, philosophical, and abstract ideas.
• Engineering Drawing Manual Drawing CADD Computer has a major impact on the methods used to design and create technical drawings. Design and drafting on computer are cheap and less time consuming. Why we go for manual drawing? • Why we go for manual drawing? Computer cannot replace the drafting board and equipment as a learning tool. Once you have learned the basics of mathematics, now after class 12, you are allowed the use of calculator and computer. If basic fundamentals are clear, better use can be made of the power of the software.
To be an expert in technical drawing, this first course on Engineering (manual) Drawing is the first step. • Items required for drawing Items required for drawing Drawing board Drawing sheet Mini-drafter/drafting machine/ T- sqaure Instrument box containing compass, divider, etc. Scales Protractor French curves Drawing pencils Eraser Drawing clip/pin/adhesive tape Sharpener Duster • Working edge Drawing board must be placed on the table with working edge always to be at the left side. • Last two sizes are normally used for student drawing • Mini-drafter – a miniature version of the drafting machine • Mini-drafter fixed on drawing board • Clamping mini drafter Set the protractor head with reference mark indexing zero degree. Fix the clamp of the mini-drafter at the top left corner either along the top horizontal edge of the board or along the left vertical edge of the board..contd • Clamping mini drafter. Contd •Place the drawing sheet underneath the scales of the mini-drafter, •Fix the drawing sheet to the drawing board with the scales of the mini-drafter aligned either with the vertical or the horizontal borderlines of the drawing sheet.
Download Free Email Outlook Pdf Student Web Uom. • Another tool T- square • Some drawing instruments • Standard sizes of drawing sheets as per BIS A2 size • Layout of drawing sheets • Standard form of arrangement • Important particulars are included • Facilitate quick reading of important particulars – quick references are located easily – drawings are prepared at various locations and shared Grids along the horizontal edges – Numerals • Grids along vertical edges – Capital letters • 25 mm.