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本文用有限元法对ZC2型蜗杆传动进行了全膜等温弹性流体动力润滑分析,绘制出了一部分不同啮合位置时接触线上的压力和油膜厚度分布图,计算结果表明:在啮合区啮入端(包括旋入端和旋出端)上接触线的润滑条件较好,在啮合区啮出端的接触线上的压力分布呈“乌鞍形”,旋出端的润滑条件比旋入端好,而在啮出端的润滑条件最差。本文还在开式加载试验台上,用电阻法对ZC2型蜗杆传动进行了弹流膜厚变化规律的定性测试,得到不问转速,不同扭矩下膜厚的变化曲线(用电流变化的曲线来显示),试验结果所显示的变化规律与理论计算分析基本吻合,为进一步改善其润滑条件而采取的措施(如可控修形)提供了理论和试验的依据。
In this paper, the full-film isothermal elastohydrodynamic lubrication analysis of ZC2 worm drive was carried out by using the finite element method. The pressure and oil film thickness distribution on the contact line were plotted at some different meshing positions. The calculation results show that at the meshing end (Including the screw-in end and the screw-out end) on the contact line lubrication conditions are better, the meshing area at the end of the contact line pressure distribution was “saddle-shaped”, screw out the end of the lubrication conditions than the screw-in end, and Lubrication conditions at the end of the worst. This paper also open load test stand, using the resistance method of ZC2-type worm drive qualitative analysis of the spring thickness change rule, get regardless of speed, torque under different thickness of the curve (with the current curve The experimental results show that the changing law is in good agreement with the theoretical calculation and analysis, which provides theoretical and experimental basis for the further improvement of the lubrication conditions (such as controlled deformation).