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首页> 外文会议>International Conference on Engineering Tribology and Applied Technology >Thermal Displacement Analysis and Verification for Screw in a Vertical Transmission Double Nut Ball-Screw System
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Thermal Displacement Analysis and Verification for Screw in a Vertical Transmission Double Nut Ball-Screw System

机译：垂直传动双螺母滚珠丝系统中螺钉的热位移分析及验证

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摘要

High speed transmission table is wildly used in industry and the demand is increased recently. High speed ball-screw device is a major component in the system. High speed transmission brings high friction and causes serious thermal displacement, especially in vertical transmission situation. Because the external load is become axial load applied on nut directly. Friction and wear became heavier on contact areas between ball and raceways, preload in ball-screw will thus be decreased speedily with operating time. The decrease of preload is also affect thermal rising rate and thermal displacement. The work of this paper is to establish a thermal elastic-viscous hydrodynamic lubrication (EHL) analysing model for friction calculation. Contact and friction forces of each contact area varying with operating conditions of ball-screw can be obtained as boundary conditions of FEM model, and theoretical results were well confirmed with surface temperature and displacement of screw. The aim of the study is useful in understanding thermal effect for a preloaded double nut ball-screw in vertical transmission.
机译：高速传动表在工业中使用野外使用，最近需求增加。高速滚珠丝杠装置是系统中的主要部件。高速传动带来高摩擦力并引起严重的热位移，尤其是在垂直传动情况下。因为外部负载直接施加在螺母上的轴向载荷。摩擦和磨损在球和滚道之间的接触区域上变得较重，因此滚珠丝杠的预载将随着运行时间迅速下降。预载的降低也会影响热上升率和热位移。本文的作用是建立一种热弹性粘性流体动力润滑（EHL）分析模型，用于摩擦计算。可以获得使用滚珠丝杠的操作条件改变的每个接触区域的接触和摩擦力作为有限元模型的边界条件，并且通过表面温度和螺钉的位移良好地确认了理论结果。该研究的目的在于在垂直传输中理解预载的双螺钉螺钉的热效果。

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