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Analytical model for optimization of fixtures
Čuš, Franc, 1953- ; Župerl, Uroš ; Balič, Jože
The paper is concerned about the neural-mathematical model for the analysis and rationalization of fixtures, suitable for clamping of thin-wall products likely to undergo defomation due to clamping ...and cutting forces during machining. The force analysis model has a built-in local optimization routine that can determine the clamping and locating forces of more reasonable magnitudes. It is suitable for the analysis of modular fixtures intended for clamping of prismatic and rotational products. The presented modet takes into consideration the friction forces occuring between the workpiece and the fixture components. Due to the use of artificial neural network (ANN) the duration of the optimization routine is very short. The described procedure ensures reduction of the time of fixture planning and prevention of defects and deformation during the machining process. A programme FIXAN has also been made for the evaluation of fixturing scheme, for calculation of the optimum positioning of clamping forces, required to enable the workpieces to be safety clamped during machining.
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