Fichas
CAD/CAM
Fichas del conjunto (12)
- 1you can use CAD to do what?draw your designs in 2D or 3D
- 2how does CAM work?it takes info from the CAD drawing and manufactures the product for you
- 3how do the machines used CAM work?they are Computer Numerically Controlled (CNC)
this means CAD/CAM program works out the necessary movements of the tool hand and sends instructions to the machine as numbers (the x,y,z coordinates) the machines onboard processor interprets these numbers and tells the tool head where to go - 4how can you manufacture a batch of products using CAD?use CAD to draw your design once then copy and paste the image so that the machine will cut out ore than one piece on your material at a time
- 5CAM processes can be two things these are?SUBRACTIVE or ADDITIVE
- 6what is a SUBTRACTIVE process, give examples?when the material is REMOVED from a larger piece of material to create a product,
e.g.'s CNC routers, milling machines and laser cutting machines - 7what is a ADDITIVE process?it works by adding material to build up the product rater than by removing it
- 8what are examples of additive processes (explain them)?3D printing works by printing layers of molten plastic, powder or wax until the full 3D shape has been formed
stereolithography makes 3D products by using a laser beam to 'cure' liquid resin in thin layers - this is pricier and slower than 3D printing
Laser-sintering is similar but the laser fuses powder together instead of curing liquid its quicker than stereolithography but the finish isn't quite so good - 9why is CAD/CAM useful for making models?you can design on screen then use a rapid prototyping machine - a 3D printer that converts your design into a 3D model
- 10what are a lot slower and more expensive ways to create models?stereolithography and laser sintering
- 11what are the benefits of CAD/CAM? (6)1. Easy to develop and edit 2D and 3d images of your design ideas and view them from all angles, easy to experiment with different materials and finishes
2. Designers can produce very realistic designs quickly on screen, which helps their boss/client understand what the designer is proposing, CAD can be used to produce the final presentation drawing with all the finishes, as well as an exploded view
3. Products can be machined at high speed, and the machines can run 24hrs a day - so a lot of things can be manufactured in a short time, machines can also work in conditions that would be hazardous to humans e.g. spray painting
4. CAM gives a high quality and more reliable finish - no human error involved
5. can mass -produce complicated products, each part can be manufactured by a different machine and the parts can be assembled quickly
6. labour costs are lower - machines are doing almost all the work (save money in the long run) - 12what are the disadvantages of using CAD/CAM?1. Computers can be affected by software problems, viruses and corrupted files, potentially slowing down production
2. because fewer workers are needed, unemployment might increase and traditional skills could be lost
3. The start up costs are very high, as it's v. expensive to buy and set up CAD/CAM systems
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- Descripción
- GCSE (SECTION TWO) RM Fichas sobre CAD/CAM , creado por Lily Pritchard el 24/04/2016.
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- Lily Pritchard
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