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For a technician to work efficiently he must have a very sound knowledge of drawing. The main objective of framing syllabus of Machine Drawing is to make the technician well trained in drawing, so that he may be able to work in different fields such as in industry, department of sales or services or in the department of drawing and design etc.
Objectives
By going through the contents student will be able to:
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Understand drawing and develop capacity to represent any matter/object with the help of picture.
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Develop primary knowledge of working drawing.
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Produce orthographic drawing of different machine parts.
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Develop skill to produce assembly drawings.
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Develop skill to produce detailed drawings of machines parts from assembly drawing.
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| CURRICULUM |
| SL |
Topics |
Sheets |
Periods |
| 1. |
Introduction |
01 |
10 |
| 2. |
Free Hand Sketching of Machines Parts |
02 |
28 |
| 3. |
Riveting |
01 |
07 |
| 4. |
Nuts and Bolts |
01 |
06 |
| 5. |
Conversion of Isometric Views into Orthographic Projection |
02 |
18 |
| 6. |
Sectional Views |
01 |
07 |
| 7. |
Assembling of different Machine Parts from disassembled views |
02 |
25 |
| 8. |
Disassembling of Machine Parts from assembled views |
02 |
20 |
| |
Total |
12 |
120 |
| CONTENTS |
| Topics |
Content |
Periods |
| 01 |
Introduction - 1 Sheet |
10 |
| 01.01 |
Representation of different types of lines. |
|
| 01.02 |
Representation of different materials, like - ferrous, non ferrous, atone, bricks, wood. |
|
| 01.03 |
Limits and Fits:
- Selection of margin
- Concept of g & H
- Go and Not go gauge
- Difference between theoretical drawing and actual drawing (Conversion of drawing into job and job into drawing).
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|
| 02 |
Free Hand Sketching of Machine Parts - 2 Sheet |
28 |
| 02.01 |
Rules of free hand sketches and its use. |
|
| 02.02 |
Concept of Sectioning: Full Sectioning, Half Sectioning, Part Sectioning. |
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| 02.03 |
Sketching of different machine parts, i.e. knuckle joint, cotter joint, coupling (flange, flexible, universal), Bearing (all types, i.e., journal, bush, pedestal, foot step etc.), Plumber block, Fast and loose pulley. (At least 4 machine parts should be shown in each sheet) - (Not to the scale). |
|
| 03 |
Riveting - 1 Sheet |
07 |
| 03.01 |
Introduction of shapes of rivet heads. Caulking and Fullering pitch, Diagonal pitch, Margin, Back pitch, etc. Types of riveting (lap and butt joint, zigzag and chain structure, Boiler joint. |
|
| 04 |
Nuts and Bolts - 1 Sheet |
06 |
| 04.01 |
Classification of nuts, terminology used in the drawing of nuts and bolts. Drawing of orthographic projections (top view, front view and side view) of a bolt, Imperical relations of dimensions of nut and bolt with respect to bolt head diameter. |
|
| 05 |
Conversion of Isometric Views into Orthographic Projection - 2 Sheets |
18 |
| 05.01 |
Conversion of Isometric Views into Orthographic Projection. |
|
| 06 |
Sectional Views - 1 Sheets |
07 |
| 06.01 |
Orthographic Sectional View of Piston of 2 stroke and 4 stroke Internal combustion Engine. |
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| 07 |
Assembling of different Machine Parts from disassembled views - 2 Sheets |
25 |
| 07.01 |
Expansion joint, cross head of steam engine, steam stop valve big end of connecting rod. |
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| 08 |
Disassembling of Machine Parts from assembled views - 2 Sheets |
20 |
| 08.01 |
Knuckle joint, coupling, (any one coupling) bearing (any one bearing), Internal Combustion Engine parts. |
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| Note: At least 10 sheets should be done in Sessional. |
| Scheme of Examination: Final Examination Marks = 80 |
