Abstract: Backward spinning is analyzed
by 3D rigid-plastic FEM. A 3D mechanical model for backward
spinning is presented. The distributions are obtained of
strain-rate and stress in the contact area of the roller and its
adjacent area. The results can well interpret the principle of
deformation of backward spinning. The relationship between the
roller angle and three components of spinning force is found
out, and the optimum roller angle, when the general spinning
force gets to the minimum value, is calculated. The
distributions of deformation area obtained by FEM agree with the
experimental result well.
Key words:
Cylindrical workpiece Backward
spinning 3D rigid-plastic FEM
Manuscript received on April
8, 1995; revised manuscript August 10, 1995
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