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首页> 外文会议>Laser metrology and machine performance VIII >Structural analysis of a large moving gantry milling machine including its work support system and foundation
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Structural analysis of a large moving gantry milling machine including its work support system and foundation

机译：大型龙门铣床的结构分析及其工作支撑系统和基础

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This paper describes the comprehensive analysis of the static structural stiffness of a large moving gantry milling machine of the type typically used to produce large components for the aerospace, shipbuilding and automotive industries.rnThe need for high static stiffness arises from the requirement to produce parts to a desired size and shape [1] and although finish machining often takes place with small depths of cut and correspondingly light cutting forces, the resulting deflections can still be excessively large if the machine has inadequate static stiffness.rnThe machining performance and component quality produced by these machines is heavily dependant upon their structural rigidity and it is therefore extremely important to maximise the stiffness of the entire structural force loop.rnMachines of the type described above are connected to the work-piece by the concrete foundations which support them and thus the machine's overall rigidity also depends upon the concrete foundation and the sub-soil beneath it.rnThis research has investigated the contribution of each significant element of the structural loop to the overall static stiffness of the machine, as measured between the ram and the component support system, in this case, fixed work-plates. Emphasis is made on the need to fully consider the concrete foundation and the subsoil beneath it [2, 3] when analysing the force loop for machines of this type. The predicted overall stiffness was compared to the measured value.rnThe paper clearly shows how modern Finite Element Analysis (FEA) software enables the design of machine tool structures to be carried out quantifiably with significant confidence in the accuracy of the results.
机译：本文描述了大型移动龙门铣床的静态结构刚度的综合分析，该类型的龙门铣床通常用于制造航空航天，造船和汽车行业的大型部件.rn对高静态刚度的需求源于生产零件的要求。所需的尺寸和形状[1]，尽管精加工通常在较小的切削深度和相应较小的切削力的情况下进行，但如果机床的静态刚度不足，则所产生的挠度仍然可能过大。这些机器在很大程度上取决于其结构刚度，因此使整个结构力回路的刚度最大化非常重要。rn上述类型的机器通过支撑它们的混凝土基础连接到工件，从而使机器的整体刚度还取决于混凝土基础这项研究调查了结构环的每个重要元素对机器整体静态刚度的影响，该静态刚度是通过夯锤和组件支撑系统（在这种情况下为固定工作台）之间测量得出的。在分析此类机器的力环时，重点是需要充分考虑混凝土基础及其下面的地下土壤[2，3]。将预测的整体刚度与测量值进行比较。rn本文清楚地显示了现代有限元分析（FEA）软件如何使机床结构的设计能够量化地进行，并且对结果的准确性有极大的信心。

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    A Myers; S M Barrans; DG. Ford;

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    Centre for Precsions Engineering, School of Computing and Engineering, The University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK;

    Centre for Precsions Engineering, School of Computing and Engineering, The University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK;

    Centre for Precsions Engineering, School of Computing and Engineering, The University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK;

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  • 正文语种 eng
  • 中图分类 TH873.7;
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