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Application of finite element analysis and Taguchi method to robust design of a micro milling machine structure

机译:有限元分析和田口方法在微型铣床结构鲁棒性设计中的应用

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In this paper, finite element modelling and Taguchi's method of experimental design were combined as a tool and applied to the design of the mechanical structure of a micro milling machine. Sensitivity analysis of the machine structural configuration was conducted using a mathematical model obtained from shaping function theory which was improved by considering the squareness errors between neighbouring elements, the deflections due to the cutting forces and the thermal growth when the entire machine is subjected to a temperature rise. Then the design factors that significantly influence the accuracy of the machine tool were established. Subsequently, the shape of the main structure of the machine, which is its column, was optimised to obtain a three-legged tapered egg-bridge having very high stiffness.
机译:本文将有限元建模与田口的实验设计方法相结合作为一种工具,应用于微铣床的机械结构设计。使用从成形函数理论获得的数学模型对机器结构进行敏感性分析,该模型通过考虑相邻元素之间的垂直度误差,由于切削力引起的挠度以及整个机器在温度下的热增长而得到改进上升。然后建立了显着影响机床精度的设计因素。随后,将机器的主要结构(即其支柱)的形状进行优化,以获得具有非常高的刚度的三足锥形蛋形桥。

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