CAD CAM

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CAD / CAM

• CAD Computer Aided Design
• CAM Computer Aided Manufacture

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Why use CAD-CAM ?

• It enables us to produce multiple copies of the
  same design
• It allows us to let the machine undertake the
  repetitive tasks of cutting and drilling
• It allows us to easily change or modify the
  design without spending time starting the design
  process from scratch
• The machine never (rarely) makes mistakes,
  doesnt get ill or take time off.

• Computerised processes reduce the need for people
  to do these jobsunemployment problems
• Very expensive to set up a CAD-CAM system

The downside
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How do we do it?

• The process we use relies on VECTOR graphics
• This means the CAM machine can only read points
  on a drawing ..
• a bit like a dot to dot drawing in a
  childs
• book

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Recognise these?
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Corel Draw Has Images We Can Use
Each dot here represents a position that the
cutting tool must go to.
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Pick an image that is similar to your design.
Select it.then click copy
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Paste the image into 2D designer
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Manufacturing

• You have to give the machine the cutting details
• Depth of each cut (0.75 mm)
• Thickness of the material
• ie.. Final depth of cut (3.00mm)
• Size of cutter (2.00 mm dia)
• Colour of cut line (red)

The material is then to be fixed to the cutting
bed of the machine with double sided tape
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The machine will then do the rest
Task Explain in simple steps what you have just
learned about how to get from your drawing to a
finished product produced by the CAM machine. Do
this using a flow chart of your own design. Use
graphics where possible.