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由于气体粘度低、粘度随温度变化小、化学稳定性好,气体轴承具有摩擦小、精度高、温度低、寿命长、耐高低温及对主机和环境无污染等优点,所以气体轴承的应用范围在不断扩大。常见的气体轴承一般采用小孔节流,结构多为轴径或止推形式。本文从工程实用出发,结合笔者所做的试验,对锥形狭缝节流气体轴承作一探讨。 问题的提出 用于内圆切片设备的氢气主轴,一般要求旋转直径大(气膜支承直径大于300毫米、刀环直径达700毫米)、长径比小(一般L/D
Due to the low viscosity of the gas, small change of viscosity with temperature, good chemical stability, low friction, high precision, low temperature, long life, high and low temperature resistance and no pollution to the host and the environment, the application of gas bearings In the constantly expanding. Common gas bearings are generally small orifice throttling, mostly multi-axis or thrust form. Based on the practical engineering, combined with the author’s experiments, this paper discusses the tapered slot throttle gas bearings. The problem is raised for the main shaft of the hydrogen gas in the inner circle slicing equipment, generally require a large rotating diameter (film support diameter greater than 300 mm, knife ring diameter of 700 mm), small aspect ratio (general L / D