大型数控立式磨床静压转台油膜热特性仿真及其实验分析

发布时间：2018-05-08 16:56

本文选题：立式磨床 + 静压转台　；参考：《制造技术与机床》2017年02期

【摘要】：以某大型立式磨床静压工作台热特性为研究对象,首先通过理论分析了油膜发热规律。理论分析表明:工作台逆时针旋转且转速较低时,油膜最高温集中在封油边右侧;转速较高时,油膜最高温集中在封油边外侧。再利用ANSYS Workbench建立油膜流体模型,仿真在不同转速条件下,封油边的发热规律。表明了仿真与理论分析的一致性。最后在转台空载和加载情况下,对四种不同转速进行实验,得到了不同的油膜温升测试结果。实验结果表明:该测试结果与仿真数据对比能够基本吻合,从而验证了理论与仿真方法的正确性。研究结果为大型立式磨床静压转台研制中进行油垫结构优化与转台控制提供了理论依据。
[Abstract]:Taking the thermal characteristics of the hydrostatic table of a large vertical grinder as the research object, the rule of oil film heating is analyzed theoretically at first. The theoretical analysis shows that the maximum oil film temperature is concentrated on the right side of the sealing edge when the counterclockwise rotation of the table is low and the highest temperature of the oil film is concentrated on the outer side of the sealing edge when the rotating speed is high. Then the oil film fluid model was established by ANSYS Workbench, and the heat rule of sealing oil edge was simulated under different rotational speed. It is shown that the simulation is consistent with the theoretical analysis. Finally, under the condition of no load and loading on the turntable, four different rotational speeds were tested, and different oil film temperature rise test results were obtained. The experimental results show that the test results are in good agreement with the simulation data, which verifies the correctness of the theory and the simulation method. The results provide a theoretical basis for the optimization of the oil cushion structure and the control of the turntable in the development of the hydrostatic rotary table of the large vertical grinder.
【作者单位】：电子科技大学机械电子工程学院;
【基金】：国家科技重大专项(2013ZX04013-011) 国家自然科学基金(51275078) 中央高校基本科研业务费(ZYGX2015J086)
【分类号】：TG596

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