| Summary: | 碩士 === 國立臺灣大學 === 機械工程研究所 === 81 === In this research we derive a method for the optimum design of
the magnetic fixture. The magnetic fixture is used in
supplement of the regular fixture to provide a uniformly
distributed holding force for ine machining. In order to firmly
hold the work piece and to prevent deformation due to the
holding force, the design emphasis is on both how to produce
maximum holding force das well as to produce a uniformly
distributed force. Due to the many varieties of design
options plus the difficulty in calculating the magnetic holding
force, it is very difficult to generate a design package that
will optimize the design. In our research, the magnetic holding
force(both tensile and shear force) are modeled by using the
ANSYS magnetic tool kit. A simulated annealing process is then
performed to search for the optimal configuration. The criteria
for maximum holding force and for the most uniformly
distributed force can both be implemented. The users provide
the initial configuration for the fixture and the magnets. Our
design package will then proceed to search for the optimal
configuration. The optimal number of magnets can also be
included for limited values.
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