| Summary: | 碩士 === 中原大學 === 機械工程研究所 === 81 === The object of this study is to develop a free form surface
measurement system which could measure surface profile on
machining center,and use this data to rebuild the graph of the
model. The program is divided into two parts, one is the
execution of measuring process of free form surfaces,the other
is the parameterization of smooth surface. In the measurement
of free form surfaces, the data points of master surface
are collected from the measurement of machining center.
After cubic spline curvefitting,we can get surface normal
vectors of each points. Then MP7 probe is moved to measure
surface points on normal directions. At last, we construct
its 3D geometry. The second part of this paper is
to deal with transformation of mesh surface to parametric
surface.Using the signs of Gauss curvatures and mean curvatures
of each points, smooth surface can be surfacefitted by least
squares method. Then we will reduce the computer memory size.
This software has the fuctions of surface combination and
data communication to other CAD/CAM systems which can be
carried out via .dxf file.
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