Modeling of laser supported contact pattern analysis

激光支持的接触模式分析建模

基本信息

批准号：
231616586
负责人：
Professor Dr.-Ing. Gert Goch
金额：
--
依托单位：
Bremer Institut für Messtechnik, Automatisierung und Qualitätswissenschaft (BIMAQ)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2013
资助国家：
德国
起止时间：
2012-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/231616586?language=en
关键词：
Modeling laser supported contact pattern

项目摘要

Gears form a key-component in drive technologies and, by this, in domestic industries. An important quality feature of gear drives is the contact pattern, which describes the form and location of contact areas occurring at the meshing gear pair. Even today it is measured by the colour paste method, which is time consuming and difficult to automatise. In order to overcome this deficit, a laser based approach will be examined. It starts with the laser heating of a gear tooth and the subsequent heat transfer to a contacting tooth. The involved tooth flanks will heat up and cool down respectively during the contact, and their contact pattern can be recorded by infrared cameras. Compared to former thermographic investigations of tooth contact patterns carried out in the 80s and 90s, a significantly improved signal-to-noise ratio is expected, leading to an inspection method suitable for industrial purposes. The objective of the research project is to examine and to evaluate the feasibility of the new method theoretically. For this, the measurement process is divided into several steps which are analysed successively (heat generation and -diffusion until the moment of teeth contact, heat transfer to the second involved tooth flank, heat diffusion after the teeth contact, infrared imaging of the resulting teeth temperature distributions). The calculation of the temperature distribution will be performed using the Finite Elements Method. Finally, the temperature detection will be simulated, considering the noise characteristics of infrared cameras. The heat diffusion after the teeth contact will cause more or less blurred infrared images of the contact patterns. Hence, the original contact patterns have to be reconstructed from simulated measurements. This will be realised using neural network tools. The project results will form a planning basis aiming at an experimental verification of the new inspection method.

齿轮在驱动技术中构成了关键组成部分，并在此构成了国内行业。齿轮驱动器的一个重要质量特征是接触模式，它描述了在梅斯齿轮对处发生的接触区域的形式和位置。即使在今天，它也是通过颜色糊状方法来衡量的，该方法耗时且难以自动化。为了克服这一赤字，将检查一种基于激光的方法。它从齿轮齿的激光加热开始，然后将随后的热传递到接触牙。涉及的牙齿侧面将分别在接触过程中加热和冷却，并且可以通过红外摄像机记录其接触模式。与对80年代和90年代进行的牙齿接触模式进行的以前的热量表进行了研究，预计有明显改善的信噪比，从而导致一种适合工业目的的检查方法。研究项目的目的是从理论上检查和评估新方法的可行性。为此，测量过程被分为几个步骤，这些步骤均经过分析（热产生和 - 扩散直至牙齿接触时刻，热传递到第二个涉及的牙齿侧面，牙齿接触后的热扩散，对所得牙齿温度分布的红外成像）。温度分布的计算将使用有限元方法进行。最后，考虑红外摄像机的噪声特性，将模拟温度检测。牙齿接触后的热扩散会导致接触模式的模糊红外图像。因此，必须通过模拟测量结果重建原始的接触模式。这将使用神经网络工具实现。项目结果将构成针对新检查方法的实验验证的计划基础。