电液伺服马达组合密封摩擦学性能的实验研究

聚四氟乙烯

电液伺服马达组合密封摩擦学性能的实验研究
崔晓 董彦良 赵克定哈尔滨工业大学

摘　要:为研究密封摩擦副所产生的摩擦力对仿真转台用电液伺服马达超低速性能的影响,对马达轴根部的组合密封进行了有限元分析,使用MPX-2000型盘削式实验机对MoS2、石墨、玻璃纤维、铜粉填充的聚四氟乙烯复合密封材料与超硬铝合金LC9、45#钢和40Cr组成的摩擦副在油润滑的条件下进行了实验研究。应用正交法进行实验设计,通过对实验结果进行方差分析,得出对马达低速性能最为有利的聚四氟乙烯复合填充材料。结果表明,采用体积分数20%的玻璃纤维、25%的铜粉、5%的石墨、5%的MoS2填充PTFE复合材料制成的组合密封环;采用超硬铝合金LC9作为电液伺服马达的外壳材料,可有效改善马达的低速性能。

关键词:聚四氟乙烯 伺服马达 正交实验 密封
分类号:　TH137.5文献标识码：文章编号：栏目信息：
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Key words:polytetrafluoroethylene（PTFE）; serve motor; orthogonal design; seal;