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MEP210 Mechanical Engineering Drawing Credits 3 (1-0-4)

MEP210 Mechanical Engineering Drawing Credits 3 (1-0-4). Dr. Ashish K Darpe (III-176) Phone: 6095(O), 1618(R), 9911112446 (M) akdarpe@mech.iitd.ac.in http://web.iitd.ac.in/~akdarpe/. SHEET LAYOUTS. Two Basic rules -. TITLE BLOCK. The position of the title block should be

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MEP210 Mechanical Engineering Drawing Credits 3 (1-0-4)

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  1. MEP210 Mechanical Engineering DrawingCredits 3 (1-0-4) • Dr. Ashish K Darpe • (III-176) Phone: 6095(O), 1618(R), 9911112446 (M) • akdarpe@mech.iitd.ac.in • http://web.iitd.ac.in/~akdarpe/

  2. SHEET LAYOUTS Two Basic rules -

  3. TITLE BLOCK • The position of the title block should be • within the drawing space such that the portion of the title block containing the identification of the drawing (registration number, title, origin, etc) is situated in the bottom right-hand corner of the drawing space, both for sheets positioned • horizontally (Type X) or vertically (Type Y). • The direction of the viewing of the title block should correspond, in general, with that of the drawing.

  4. ITEM REFERENCE (Bill of Materials)

  5. TYPES OF DRAWINGS • SINGLE PART DRAWING. • COMMON DRAWING. • ASSEMBLY DRAWING. • WELDING DRAWING. • CASTING DRAWING. • FORGING. • SHEET METAL. • PIPING. • CIRCUIT DIAGRAMS. • PICTORIAL DRAWING. • PLANT LAYOUTS. • Exploded assembly drawing. • Schematic assembly drawing. • Drawing for installation. • Drawing for catalogue • Patent drawing.

  6. TYPES OF LINES:- General applications- Continuous thick Visible outlines A • Imaginary lines of intersection. • Dimension lines. • Projection lines. • Leader lines. • Hatching, short center lines. Continuous thin B Continuous thin Freehand. Limits of partial and Interrupted views C Continuous thin Straight with zigzag. D Long break line. • Hidden outlines. • Hidden edges. E Dashed thick.

  7. TYPES OF LINES:- General applications- • Hidden outlines. • Hidden edges. F Dashed thin. • Center lines. • Lines of symmetry. • Line of trajectories. Chain line G Chain thin, thick at ends and changes the direction • Cutting planes. H • Indication of lines or surfaces to which special requirement applies. Thick chain line J

  8. TYPES OF LINES:- General applications- • Outlines of adjacent parts. • Alternative and extreme • positions of movable parts. • Centroidal lines. • Initial outlines prior to forming. • Parts situated in front of • cutting plane. Thin chained double Dashed. K Lines Pencil • Initial work and construction lines. • Outlines, dotted lines, section plane lines, dimension • lines, arrowheads • Centre lines, section lines H 2H 3H or 4H

  9. SECTIONS AND HATCHING • Hatching is generally used to show areas of sections. • The simplest form of hatching is usually done by drawing continuous thin lines at a convenient angle, preferably 45º to the principal outlines or lines of symmetry of the sections. • Separate areas of a section of the same component shall be hatched in an identical manner. • The hatching of adjacent components shall be carried out with different directions or spacing.

  10. Thin Sections - Thin sections may be shown entirely black a space of not less than 0.7 mm must be left between adjacent sections of this type. Arrangement of Successive Sections

  11. Section of connecting rod.

  12. To save time and space, symmetrical objects may be drawn as a fraction of the whole

  13. In cases where the scale is so small that details of the feature cannot be shown or dimensioned, the feature of the part may be framed by a continuous thin line (type B) and identified by a capital letter

  14. END

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