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Abstract: An
acceptable approach to generate a 3D forming path, which is called
virtual guiding model method is accomplished. The method has the similar
idea with the conventional COPY mill. A track ball is forced to move
continuously on a virtual guiding tool which is generated from the part
to simulate the real moving process of the forming tool. Based on the
idea and the simple principle of kinematics, the FEM model of the track
ball and the virtual guiding tool is constructed. Through the analysis
of the computing process, the suitable loading force and forming
velocity are ascertained, and the influence factors of the computing
precision are also discussed. Because the method is based on FEM
simulation completely, the generated forming path can be used directly
for the subsequent metal blank forming process. This method is realized
in the FEM software PAM-STAMP and mainly used in the simulation of the
sheet metal incremental forming process.
Key words: Blank
sheet FEM Space movement Incremental forming
CLC No: TG386
Received
20050614,
received in revised form 20051127
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