What Is The Best Process To Produce An Aluminium Reflector Prototype?
For auto parts, rapid prototyping manufacturers often offer a variety of processing options for different needs. Things like 3D printing (additive manufacturing), Urethane casting(silicone moulds), RIM and rapid tooling.
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Good surface roughness is often required, generally lower than Ra0.2μm and needs to be mirror gloss. The normal SLS and other rapid prototyping processes cannot meet the surface quality requirements. Besides, as an important optical component, the accuracy requirement is controlled within or below 0.05mm. Therefore for machining aluminium reflector, CNC milling is the best option, its advantage is embodied in machining the parts with high precision, and the surface of CNC milled parts is high quality.
However, due to the complex structure of the reflector, it is necessary to use the 5-axis CNC machining to complete the production. For some assembly structures on the backside, auxiliary machining like EDM is also needed to help clear the corners.
