Optimal fixture design in peripheral milling of thin-walled workpiece |
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Authors: | Shaogang Liu L Zheng ZH Zhang DH Wen |
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Affiliation: | (1) Department of Industrial Engineering, Tsinghua University, Beijing, 100084, P.R. China |
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Abstract: | In order to optimize the positions of the locators in peripheral milling of a thin-walled workpiece, a finite element model
along with an accurate cutting forces model is proposed in this paper. The finite element model takes into account the thickness
variations of the workpiece in peripheral milling. The locators on the secondary locating surface directly influence the surface
errors in peripheral milling of thin-walled workpiece, so this paper deals with the optimization of the positions of the locators
on the secondary locating surface. A method including two steps is presented. In the first step, the initial positions of
the locators are determined by adding the locators at the position with the maximum deformation. In the second step, a heuristic
algorithm is proposed to optimize the positions of the locators. Finally, a simulation example is used to illustrate the method. |
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Keywords: | Fixture analysis Machining error Peripheral milling Thin-walled workpiece |
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