Open Source Air-Bearing Simulation

The analytical and numerical simulation of air bearings has been a field of research for a long time. As such, the history and various methods and approaches are well documented in the literature [1]. However, their implementation requires considerable knowledge of numerical mathematics and coding. Another option is multi- physics software such as COMSOL. It is being used for air-bearing simulation [2] [3]. We found that quite some modeling effort is necessary to achieve good results. Especially for micro-groove and restrictor-regulated bearings and subsequent model fitting, customization is required. While certainly an option to consider for many applications, there are drawbacks to using a small part of a large software suite to analyze a narrowly defined problem. One example is the licensing cost. Combined, there might be a barrier to entry for some and a significant time investment for others to simulate an air bearing. It could be speculated, that considerable duplicative effort has been made to model or write what is essentially the same software, by researchers the world over. The air bearing simulation described here does not claim to be novel in the modeling approach, but rather in the fact that it is an open-source project with accessibility and modularity in mind. Eitzenberger will release the first version of the simulation on Github by the end of 2024, hoping that others will find it helpful, and will consider joining the collaborative development.

Pressure-Distibution-v002

Pressure distribution of an Eitzenberger nozzle and micro-groove regulated air bearing at a given air gap.

汽车驾驶模拟器

汽车驾驶模拟器是一个带有全息投影的座舱和一辆整装汽车,竖直地安装在一个六脚架舱和直线导轨上。为了实现尽可能逼真的驾驶模拟,六脚吊舱在空气轴承轴构建的直线导轨上移动。埃森伯格开发并制造了直线空气轴承,并对与气浮轴承配合适用的导轨进行精细加工。最大的挑战是既要高阻尼性和高刚度,又要求很高的气浮间隙以及紧凑的结构、总体重量也要小。气浮轴承的供气压力达到了9bar。模拟器加速度达到了 10 m/s2

Fahrsimulator
Fahrsimulator

7-轴 系统

用于2,000mm x 1,000mm的平面光学元件的表面加工(磨/铣)、烫印和测量。

滚动道路和传送装置

这些产品用于汽车行业所谓的环境风洞(EWT)。在风洞测试中,由一条3米宽的环形钢带作为模拟路面,汽车放置在钢带上。钢带以300千米/小时的速度带动汽车运行。支撑滚动路面的空气轴承安装在平板(下图左一)的下方,该空气轴承的供气压力达到24bar,他们是空气轴承和真空预压轴承的组合形式,这对组合独立地供气,独立地对钢带起作用。

Rolling Road und Conveyor
Rolling Road und Conveyor

多面体扫描仪

空气轴承结构的设计使得扫描仪的速度最高可达60,000转/分。由于采用了空气轴承结构,由于空气轴承“零摩擦”的特性,使得多面体扫描仪的端面跳动误差小于< 1 µm。

快刀主轴

空气轴承结构的快刀主轴用于塑料镜片的不规则曲面的车削,可适用于恶劣(含冷却液)的加工环境

超高速直线轴

由气浮轴承打造的直线轴,行程600 mm;速度 8m/s,加速度180 m/s2,重复精度0.2 μm。适合半导体行业中高速且精密的取放应用。

Hochgeschwindigkeits-Linearachse
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