|
|
|
Metalwork - Exam Papers - OL - Project - 2013
General Instructions to Candidates
The project you make and submit for examination, including the design element, must be
your own individual work, carried out in the school under the supervision of the teacher.
Your own individual work is intended to include the intellectual activity of design along
with the practical activities of making the project.
Instructions for Making the Project
- Details of a Model Bulldozer are shown on the accompanying drawing.
- Make and assemble the Project using the materials specified in the Parts List.
- (i) Design, make and attach a Front Grill for the model.
(ii) Design and make a securing device to attach the Bonnet (Part 2) to the model and which allows
access to the transmission unit.
(Note: 20% of the marks will be awarded for this section.)
- Tension the Caterpillar Track (Part 24) by moving the Rear Axle (Part 18) in the slots of theChassis (Part 3) and lock in position with M4 nuts. Ensure that the Rear Wheels rotate freely.
- Complete, test and solder the Electric Circuit.
- Your Examination Number must be clearly shown in the position indicated on the drawing.
- Your completed project, clearly identified with your Examination Number, must be available to the
visiting examiner along with the necessary testing equipment.
Parts List
| Part No. |
Part Name |
Required |
Material and Description |
| 1 |
Blade |
1 |
Aluminium (painted or polished) |
| 2 |
Bonnet |
1 |
Aluminium (painted or polished) |
| 3 |
Chassis |
1 |
Aluminium (painted or polished) |
| 4 |
Seat Support |
1 |
Aluminium Channel (polished) |
| 5 |
Seat |
1 |
Coloured Acrylic |
| 6 |
Blade Bracket |
2 |
Aluminium (painted or polished) |
| 7 |
Wheel |
4 |
Nylon or Acetal |
| 8 |
Battery Holder Bracket |
1 |
Aluminium (painted or polished) |
| 9 |
Windscreen |
1 |
Clear Acylic |
| 10 |
Windscreen Support |
1 |
Aluminium (painted or polished) |
As Supplied
| Part No. |
Part Name |
Required |
Material and Description |
| 11 |
M3 x 8 Pan Head Set Screw |
13 |
Steel |
| 12 |
M3 x 8 CSK Set Screw |
2 |
Steel |
| 13 |
M2 x 25 Pan Head Set Screw |
2 |
Steel |
| 14 |
M3 Hex Nut |
17 |
Steel |
| 15 |
M4 Hex Nut |
8 |
Steel |
| 16 |
M4 Cap Nut |
4 |
Steel |
| 17 |
Front Axle |
1 |
M4 Threaded Bar (178mm approx.) |
| 18 |
Rear Axle |
1 |
M4 Threaded Bar (178mm approx.) |
| 19 |
3 Volt Economy Gearbox |
1 |
In-Line Motor Mount / 120:1 or 220:1 Ratio |
| 20 |
Motor Bracket |
1 |
As Supplied |
| 21 |
Motor Gear |
1 |
Plastic Gear - 20 Teeth - to suit Gearbox Shaft |
| 22 |
Screw (Gearbox Shaft) |
1 |
M2.5 x 16 Pan Head Steel |
| 23 |
Axle Gear |
1 |
As Required |
| 24 |
Caterpillar Track |
2 |
Plastic Gear - 40 Teeth - 4mm Axle Hole |
| 25 |
Switch |
1 |
30mm wide (190mm approx.) |
| 26 |
Battery Holder + Clip |
1 |
AA x 2 |
| 27 |
Insulated Wire |
|
As Supplied |
Design Element
| Part No. |
Part Name |
Required |
Material and Description |
| 27 |
Front Grill |
1 |
As Designed |
| 28 |
Bonnet Attachment |
1 |
As Designed |
Note: 20% of the marks will be awarded for Assembly, Finish and Function.
Zip Files
Download Solidworks Parts, Solidworks Drawings, PDFs of Drawings, 3D images.
|
|
|
