摘要
针对空气静压导轨运动过程中出现的气膜波动问题,研究溜板气腔结构、节流器直径、供气压强对气膜内气旋及气膜波动的影响。通过仿真数据的对比分析发现气旋现象与气膜波动存在紧密的联系。从仿真结果得到了对气膜波动产生影响的因素有:节流孔的直径、气腔的结构形状和供气压强的大小。在上述的这些影响因素中供气压强的大小对气膜波动影响较大,最后试验对得出的这一结论进行了验证,与仿真结果吻合。这些分析为从导轨结构和工艺参数上对空气静压导轨的气膜波动进行抑制,提高导轨的稳定性及加工精度提供了理论依据。
For the problem of the gas fluctuation of the aerostation, the structure of gas pocket, the diameter parameters of the orifice, and the supply pressure of the guideway impact on the gas film cyclone and fluctuation is researched, The cyclone phenomenon is close relationship with the gas fluctuation by comparing the simulation data. From the simulation results we obtained the factors affecting the gas fluctuation are： The orifice diameter, the structure shape of the gas pocket and gas pressure size. The pressure size in the above factors affects the gas fluctuation greatly, this was verified by experiment, and the law of the vibration is good agreement with the simulation results. This provides a theoretical basis to inhibit the gas film fluctuation of the aerostatic guideway from the structure and process parameters, and to improve the stability and machining accuracy.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2014年第15期97-103,共7页
Journal of Mechanical Engineering
基金
国家自然科学基金(51105005)
北京市自然科学基金(3142005)
教育部博士点学科专项科研基金(20111103120002)资助项目
关键词
空气静压导轨
气膜波动
气旋现象
稳定性
加工精度
aerostatic guideway
gas fluctuation
cyclone phenomenon
stability
machining accuracy
