Engineering Drawing Basics
Upcoming SlideShare
Loading in...5
×

Like this? Share it with your network

Share
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
438
On Slideshare
418
From Embeds
20
Number of Embeds
1

Actions

Shares
Downloads
22
Comments
0
Likes
0

Embeds 20

http://www.slideee.com 20

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide
  • Layout of a typical drawing shet should be same as the background of this presentation. Nameplate at the bottom right corner. <br />
  • Layout of a typical drawing sheet <br />
  • HIDDEN LINES WHERE EXTENSION OF VISIBLE LINES SHOULD HAVE A GAP BETWEEN THE TWO Lines <br /> Single centre line for longitudinal view and crossed centre lines for cross sectional view <br />

Transcript

  • 1. Lecture 1 Friday 25 April 2014 1 ENGINEERING GRAPHICS 1E7 Lecture 1: Introduction Lecturer: Dr. Bidisha Ghosh (bghosh@tcd.ie)
  • 2. Course Structure
  • 3. Assessment • Examination: 65% of the overall mark – 3 sections (A, B and C) – 2 questions per section – 3 questions to be answered, one from each section • Dr B. Gosh : Sections A and B • Dr G. O’Donnell : Section C • Labs 35% - assessed by coursework – 10 % AutoCAD – 10 % Pspice – 10% D.O. Tutorials Dr B. Gosh – 5 % D.O. Assignment Dr G. O’Donnell
  • 4. Time Table
  • 5. Lecture 1 Friday 25 April 2014 5 Syllabus – Hand Drawing 1 • Basic Construction • Orthographic Projections • Isometric Projections • Auxiliary Views • Perspective : One-Point • Perspective : Two-Point
  • 6. Lecture 1 Friday 25 April 2014 6 Aim of the Course • Knowledge of engineering drawing instruments • Understanding and interpretation of technical drawings • Ability to develop projections of a 3D object
  • 7. Lecture 1 Friday 25 April 2014 7 Evaluation • Examination (Sections A & B) (2/3 of the total examination marks) • Continuous Assessment (10% of the total course marks) – four drawing office tutorials
  • 8. Lecture 1 Friday 25 April 2014 8 Waterfall M. C. Escher Technical drawing is the language of engineers and designers
  • 9. Lecture 1 Friday 25 April 2014 9 Topics of Interest •Drawing Instruments •Lines •Dimensioning
  • 10. Lecture 1 Friday 25 April 2014 10 1. Drawing Board DRAWING INSTRUMENTS 1
  • 11. Lecture 1 Friday 25 April 2014 11 DRAWING INSTRUMENTS 2 A Series Formats (mm) A0 841 × 1189 A1 594 × 841 A2 420 × 594 A3 297 × 420 A4 210 × 297 A5 148 × 210 A6 105 × 148 A7 74 × 105 2. Drawing Sheets
  • 12. Lecture 1 Friday 25 April 2014 12 DRAWING INSTRUMENTS 3 •Layout of a Drawing Sheet
  • 13. Lecture 1 Friday 25 April 2014 13 • Tee square/ Drafting Machine DRAWING INSTRUMENTS 4
  • 14. Lecture 1 Friday 25 April 2014 14 • Set squares (a pair) DRAWING INSTRUMENTS 5
  • 15. Lecture 1 Friday 25 April 2014 15 • Irregular/ French curves DRAWING INSTRUMENTS 6
  • 16. Lecture 1 Friday 25 April 2014 16 • Compasses • Divider • Protractor • Ruler/Scale • Pencil, Eraser DRAWING INSTRUMENTS 7
  • 17. Lecture 1 Friday 25 April 2014 17 TYPES OF LINES • 3 Main Types DRAWING LINES 1
  • 18. Lecture 1 Friday 25 April 2014 18 • Lines to aid understanding DRAWING LINES 2
  • 19. Lecture 1 Friday 25 April 2014 19 DIMENSIONING 1 Dimension Lines (DL) Position of DL
  • 20. Lecture 1 Friday 25 April 2014 20 DIMENSIONING 2 Alignment of DL DL of Small Features Dimensioning Angles Dimensioning Circles
  • 21. Lecture 1 Friday 25 April 2014 21 DIMENSIONING 3
  • 22. Lecture 1 Friday 25 April 2014 22 DIMENSIONING 4 Correct Practice of Dimensioning Drawing should only carry dimensions needed to manufacture
  • 23. Lecture 1 Friday 25 April 2014 23 Reference Books • Technical Draughtsmanship By Eanna O’Broin • Engineering Drawing with Worked Examples By M.A. Parker & F. Pickup • Technical Drawing By F. E. Giesecke, A. Mitchell, H. C. Spencer, I. L. Hill, J. T. Dygdon, J. E. Novak
  • 24. Lecture 1 Friday 25 April 2014 24 Assignment for Thursday! • Get your instruments sorted- buy them or borrow them