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AQA GCSE 5 Scales of production Design and Technology 8552 Unit 4

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1 AQA GCSE 5 Scales of production Design and Technology 8552 Unit 4
Common specialist technical principles 5

2 Objectives Understand how products are produced in different volumes
Explain when and why different manufacturing methods are used for different production volumes Be able to link the use of relevant specialist processes to the appropriate level of production

3 Starter Put the following items in order by the volume manufactured: One Many

4 Production volumes One Many
How did you decide where to place the objects? Why do we produce products in different volumes? How were these products made? How do production volumes affect production techniques? One Many

5 Scales of production Some products are manufactured in huge volumes, whereas for other products, only one unit is made There are four different scales of production: One-off production Batch production Mass production Continuous production

6 One-off production A single product or unit is made
One-off production is suitable for prototypes and when a product is designed for a client with specific needs Why might one-off production be linked with design for disability? Suggest two other examples of one-off products? Why do one-off products have a high unit cost?

7 Prototypes and 3D printing
Prototypes are classified as one-off products and 3D printing is often used to manufacture prototypes What makes 3D printing a suitable process for one-off production?

8 Personalisation and one-off products
What is the difference between one-off and personalisation? Complete Worksheet Task 1

9 Batch production More than one unit is produced at a time in a set or batch e.g. confectionary, newspapers or furniture items Patterns, templates or jigs are used to increase efficiency Production lines are flexible and generally have shorter lead times Why are seasonal products suitable for batch production?

10 Jigs, patterns and templates
Jigs and patterns can be made or bought in to expedite a certain process They can help to perform repetitive or awkward tasks accurately Jigs can be used in one-off, and batch production How do jigs make production faster and more accurate? How could jigs help reduce waste?

11 CNC machines CNC stands for Computer Numerical Control
These are CAD/CAM machines like laser cutters and CNC routers These machines are often used in batch production because they are accurate and efficient but also flexible What makes them so versatile?

12 Worksheet 5 Study the jigs, patterns, templates and stencils in Task 2 and explain what each one is designed to do Design a jig of your own

13 Mass production Mass produced products are made in large volumes, in factories with a high level of automation and very few, if any, processes completed by hand High set-up costs and low unit costs characterise mass production Give three examples of mass produced products? Why are mass production lines less flexible than those for one-off or batch production?

14 Set-up costs The more automation in a production line, the higher the set-up costs will be Products made using complex industrial machinery will be mass produced Which industrial processes have high set-up costs? How can a manufacturer justify the high set-up costs of mass produced products?

15 Continuous production
A continuous production line is run non-stop, 24 hours a day, 7 days a week, manufacturing products to meet a constant demand What types of products would be suitable for continuous production? How labour intensive are continuous production lines? How does this affect unit and set-up costs?

16 Worksheet Task 3 High unit cost Low unit cost High set up cost
Low set up cost Minimum flexibility Maximum flexibility Handmade Automation Unskilled workers / operators Skilled workers / operators One-off Batch Mass Continuous

17 Worksheet Task 3 High unit cost Low unit cost High set up cost
Low set up cost Minimum flexibility Maximum flexibility Handmade Automation Unskilled workers / operators Skilled workers / operators One-off Batch Mass Continuous

18 Plenary A variety of different manufacturing techniques have been covered: Manufacturing by hand 3D printing Laser cutting Use of jigs and patterns CNC routers Injection moulding Robotics Complete Worksheet Tasks 4 and 5

19

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