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Home>FAQ
170. Rapid prototyping process work?
Rapid prototyping process works as follows:1.dimensional model of the structure: in the 3D CAD design software to get description of the parts of the CAD file. 1-like rapid prototyping support for the STL model file output format, namely, the so-called solid surface do face similar treatment, is approximately flat facet model 2 angular surface. CAD models to simplify the data format to facilitate subsequent slicing. Data processing because of its relatively simple and has nothing to do with the CAD system, it quickly developed into the field of rapid prototyping rapid prototyping CAD systems and standards for data exchange between machines, each of three angular facets that with 4 items . The three vertex coordinates and a normal vector, the CAD model is such a vector set. Like in a software system can be controlled by adjusting the parameters of the output precision, reducing the surface approximation error. Such as the Pre / E software is through the selected value as a string of high accuracy of approximation parameters.
2.dimensional model of the discrete processing: in selected production direction, the layered program through a dedicated 3-D solid model of for one dimensional discrete, that is produced along the direction of slicing processing , for every 1 thin slice section profile and physical information. The thickness of the layer is formed when the accumulation of single-layer thickness. The direction of the layering of sliced CAD model surface continuity of the model is inevitably a loss of some information, leading to part size and shape of the error. Slice thickness directly affects parts of the surface roughness and surface accuracy of the parts, each 1-level contour information are connected by a sequence into a series of intersection of the fold line form. Therefore, the stratified model obtained has a similar profile, the contours between layers of information has been lost, the greater the thickness the more information is lost, resulting in the forming process produces a surface error.
In summary, to improve manufacturing precision parts in the model of face processing, the accuracy of selected parameters of the smaller; discretized in the model, you should select a smaller slice thickness.
Here are some samples we have done before, please kindly take a look:
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CA, U.S.A
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Cool Prototyping Copyright 2008-2009 © All Rights Reserved. Rapid Prototyping
Cool Prototyping Copyright 2008-2009 © All Rights Reserved. Rapid Prototyping