07-06-2012, 04:39 PM
Design Realization
Design Realization .ppt (Size: 682.5 KB / Downloads: 1)
This time: Manufacturing & Materials
Manufacturing is undergoing a revolution:
Traditional methods:
Casting, molding, fusing, slumping
Milling, lathing (non CNC-versions)
Stamping
Rolling, extrusion
Shape is “write-once” (not programmable) in these methods.
Next-wave Manufacturing
Reprogramming shape:
CNC machining: A computer outputs a path for a cutting tool to create a specified surface.
Not new, but now inexpensive, PC-based.
Plastics, wood, metal, glass.
Milling
Milling involves a moving XYZ head that cuts into the workpiece:
Bits can achieve different finishes.
Milling Example
CNC milling example (Deskproto web site)
Finish is quite smooth
ballnose cutting tool.
Lots of waste, but can be recycled!
Next-wave Manufacturing
PC-boards:
Created with CAD tools.
Photographic reproduction:
Low cost in volume.
High complexity possible.
Multi-step process, BUT:
Web-based services have 24-hour turnaround, low cost.
