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Metalwork - Exam Papers - HL - Project - 1994
Instructions
Details of a Model Air Compressor are show on the accompanying drawing.
- Make the model using the materials as specified
in the parts list.
- An alternative hardwood base may be designed and made for the model.
- An adhesive is to be used to bond Part 14 to Part 3 and Part 13 to Part 7.
- Assemble the parts using the set screws supplied.
Parts List
| Part No. |
Part Name |
Required |
Material and Description |
| 1 |
BASE |
1 |
BLACK PERSPEX OR HARDWOOD |
| 2 |
CRANK CASE |
1 |
BRASS, COPPER OR STEEL |
| 3 |
COVER PLATE |
1 |
CLEAR PERSPEX |
| 4 |
CYLINDER |
1 |
COPPER PIPE |
| 5 |
CRANK |
1 |
BRASS, COPPER OR STEEL |
| 6 |
CON ROD |
1 |
BRASS, COPPER OR STEEL |
| 7 |
PISTON |
1 |
ALUMINIUM OR NYLON |
| 8 |
CYLINDER HEAD STUDS |
2 |
STEEL OR BRASS |
| 9 |
CYLINDER HEAD |
1 |
CLEAR PERSPEX |
| 10 |
DRIVING PULLEY |
1 |
CLEAR PERSPEX |
| 11 |
SHAFT |
1 |
BRASS OR STEEL |
| 12 |
CRANK PIN |
1 |
BRASS OR STEEL |
| 13 |
GUDGEON PIN |
1 |
BRASS, STEEL OR ALUMINIUM |
| 14 |
BEARING |
1 |
CLEAR PERSPEX |
As Supplied
| Part No. |
Part Name |
Required |
Material and Description |
| 15 |
M5 x 8 SET SCREWS |
2 |
BRASS OR STEEL |
| 16 |
M5 x 6 SET SCREWS |
2 |
BRASS OR STEEL |
| 17 |
* M5 HEXAGONAL NUTS |
8 |
BRASS OR STEEL |
| 18 |
* M6 HEXAGONAL NUTS |
2 |
BRASS OR STEEL |
| 19 |
Ø5 WASHERS |
4 |
BRASS OR STEEL |
| 20 |
Ø6 WASHER |
1 |
BRASS OR STEEL |
* Cap Nuts may also be used. |
NOTE :
- If hardwood is used for Part 1, the overall dimensions (length and width) maybe increased by up to 20% if necessary. The height of the base must not exceed 20mm.
- If steel is used for parts 2, 5 and 6 they must be spray painted matt black before assembly.
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