TERM 3
2 Each learner in your group must develop an idea. 3 Evaluate these ideas and select one to develop further. The final design can incorporate good ideas from other sketches. As you evaluate the sketches, ask yourself the following questions: • Does the solution meet the requirements as stated in the scenario? •
Is this solution reasonably easy to manufacture?
• Can it be simplified in any way and, if so, will it still be effective? • Will the solution be safe to use?
(10)
Activity 4 Create a design brief
1 Draw up a design brief with specific details which might include more detailed sketches or written information needed to make the device.
2 Your brief must contain constraints and specifications such as: • What type of material is to be used for the lift cage and for the main structure?
• What speed do you want the mine cage to travel up and down? • What size cable drum will you use, and at what speed must your drum rotate to produce the correct speed?
3 At this stage you will need to consider the costs involved in manufacturing your solution: • Will you be able to manufacture parts yourself or can you buy parts from a supplier?
• What will the costs of material be? • What will the costs allocated to labour be?
(5) Making skills
Drawings are the language that engineers and designers use to communicate their ideas. Therefore, they need to be neat and clear. Standard layouts are used with correct line types.
Activity 5 Draw the shaft headgear
1 Draw a 3-D isometric drawing of the selected design. The drawing must be drawn to scale and give the dimensions.
2 Make a orthographic (2-D drawing) of two views of the design. This 2-D drawing should also be drawn to scale and should contain major dimensions.
(15)
Practical Assessment Task
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