Digital Design And Manufacture Flashcards
Advantages of CAD
- Speeds up design and development process due to ability to edit and develop drawings on a computer
- collaborative work across multiple offices
- easy to send to cam equipment
Disadvantages of CAM
- Initial set-up is expensive
- software require regular updates
- not convenient for quick sketches
Capabilities of CAD software
- high quality, photo realistic rendering
-rotated and viewed from any angle
-client and marketing feedback from rendering over physical models
-ideas developed quicker
-original artwork can be scanned into software for further development
-editing tools exelerarethe development of ideas
Computer aided design
(Cam) using computers to design and develop products
Simulations
-Highlight any potential problems and indicate it the product will turn out as expected
-Shows now long an item will take to be machined
- clashes with clamps and vices will show up
- supports for 3d models
CAM processes
- CAD files downloaded to CNC machines
- machine generates control programme
Feed rate, cutter speed, other factors to suit material
Later cutting (CNC)
- High energy laser beam to cut/vaporise materials
- compressed gas/air blows waste material away
- the x and y axis, speed and power are programmed to cut and engrave
Routing (CNC)
-Both 2d and 3d drawings can be used
-the high-speed cutter moves in the x, y and z axes
Milling (CNC)
- Fitted with tools to drill holes, cut slots or shape the surface and edges
- enclosed to improve safety
- coolant improves tool life and quality of finish by providing lubricant
-Bed in and y direction and cutter moves in z direction
Turning (CNC)
-Lathes usually machine metals and plastics in bar form, this could reduce the diameter or length of a bar or thread cuttingor boring
- may be pard of a (FMS) with other CNC machines
Plotter cutting (CNC)
- Used to cut out shapes
-generates an x and y co-ordinate cutting path
Virtual modeling
-Used to test products before they are manufactured
- Simulate aspects of the performance
- production system planning
Computational fluid dynamics (CFD)
Virtual testing of products in liquid or gasses using CAD based software
Electronic point of sale (EPOS)
Computer system using barcodes and other devices to monitor product sales
Master production schedule (MPS)
Software-based system to organise and schedule product manufacture
Kanban
Factory material and component monitoring and re-ordering system central to Jit production
Radio frequency identification (RFID) tags
Scannable electronic devices used to track parts and products
