rapit prototyping
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![Page 1: rapit prototyping](https://reader036.fdocuments.in/reader036/viewer/2022062300/558a1773d8b42ac1028b4763/html5/thumbnails/1.jpg)
RAPID PROTOTYPING AND TOOLING
MODEL SLICING
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THE PART IS DIVIDED INTO SLICES
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REASONS FOR USING DIRECT SLICING
•Reduced file Size (Over-faceted Models);
•Greater Model Accuracy;
•Reduced RP Machine Pre-processing Time;
•Elimination Of Repair Routines
DISADVANTAGES OF DIRECT SLICING
•Supports Cannot Easily Be Added To Nested Sections.
•Beam Compensation And Offsets Still Require Processing.
•More Designer Knowledge Is Required
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TOOL PATH GENERATION
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TOOL PATH GENERATION
• To generate and control the tool direction and speed in part manufacturing
• Two different approaches to generate the tool path
• Normal surface and offset surface, approximation are always used to the offset surface
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TOOL PATH ALGORITHM
• The tool path generation algorithm is to efficient tool path to machine object surfaces, classified tool path generation into isoperimetric and non-isoperametric paths. the accuracy of the surface depends on the desired tolerance.
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SURFACES
• A three dimensional curved line Can be represented in an analytical form With the pair of functions:
Y = f (x) Z = g(x)
• Can then be represented by the Vector function:P(u) = (x(u), y(u), z(u))
The parameter (u) is defined in The range from [0 to 1]
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Parametric equations for surfaces are Formulated with two parameters [ u and v], A coordinate position on a surface are Then represented by the parametric vector Function:
P(u,v)=(X(u,v),Y(u,v),Z(u,v)In design applications, a surface is often defined by interactively specifying a set of control points which indicate the surface.
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THANKING YOU