Finite Element Simulation for Quality Dependent Lifetime Analysis of Micro Gears
Finite Element Simulation for Quality Dependent Lifetime Analysis of Micro Gears
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用于微型齿轮质量相关寿命分析的有限元仿真
DOI：
10.1016/j.procir.2015.03.047
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Glaser
中科院分区：
文献类型：
--
作者：
Haefner;Quiring;Gullasch;Glaser
如今，微型电机与微型传动装置结合用于多种工业应用中，例如牙科钻头或医疗行业的微创手术设备，工业自动化领域中用于晶片加工的六足微型定位系统或可调汽车部件，例如LCD显示器的固定装置。微型传动装置由微型齿轮组成，这对其功能至关重要。微型齿轮通常定义为模数小于200 μm的齿轮。为了确保微型齿轮的正常运行达到预期目的，对其寿命进行可靠的预测至关重要。寿命评估对于微型齿轮尤其重要，因为与具有较大模数的齿轮相比，其几何形状偏差对其额定载荷的影响显著更大。这是由于微型齿轮的制造工艺导致其相对于零件尺寸的较大形状偏差的结果。微型齿轮的寿命可以通过实验方法来评估。在这种情况下，一对微型齿轮在现实的、明确定义的条件下系统地磨损，直到可以检测到其中一个微型齿轮的缺陷。这可以通过高度精确的实验装置进行。本文介绍了一种基于有限元分析的微型齿轮副实验过程中齿面特征载荷的计算方法。为此，通过高精度的三维测量和样条插值，推导出试样的真实的齿轮几何形状的CAD模型。在此基础上，利用基于可靠性统计的模型，可以预测出微型齿轮的寿命与其形状偏差的关系。
Nowadays, micro motors are used in combination with micro transmissions in manifold industrial applications such as dental drills or the equipment for minimally invasive surgery in the medical industry, hexapod micro positioning systems for wafer processing in the field of industrial automation or adjustable automotive components such as fixings of LCD monitors. Micro transmissions consist of micro gears, which are critical to their functionality. Micro gears are typically defined as gears with a module which is lower than 200 μm. To ensure proper operation of the micro gears for their expected purpose, a reliable prediction of their lifetime is crucial. Lifetime evaluation is particularly important for micro gears, as the influence of their geometric shape deviations on their load rating is significantly higher in comparison to gears with larger modules. This is a consequence of the larger shape deviations of micro gears in relation to their part size due to their manufacturing processes. The lifetime of micro gears can be evaluated by an experimental approach. Within this a pair of micro gears is systematically worn under realistic, clearly defined conditions, until a defect of one of the micro gears can be detected. This can be conducted by means of a highly precise experimental setup. In this article, a methodology to calculate the characteristic loads at the tooth flanks of the pair of micro gears during the experiments based on finite element analysis is introduced. For this purpose, CAD models of the real gear geometry of the specimen are deducted by means of high precision 3D measurements and spline interpolation. On the basis of these data, the lifetime of the micro gears dependent on their shape deviations can be predicted by means of a model based on reliability statistics.
影响因子：
3.4
作者：
E. Brommundt;D. Sachau
通讯作者：
D. Sachau
根据当前形状偏差和材料结构预测微型齿轮寿命的方法
影响因子：
3.4
作者：
G. Lanza;B. Haefner;J. Gibmeier
通讯作者：
J. Gibmeier