权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

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.

齿轮是驱动技术中的关键部件，因此也是国内工业中的关键部件。齿轮传动的一个重要质量特征是接触模式，它描述了在啮合齿轮副处发生的接触区域的形式和位置。即使在今天，它也是通过色浆法来测量的，这种方法既耗时又难以自动化。为了克服这一缺陷，将研究基于激光的方法。它开始于齿轮齿的激光加热和随后的热传递到接触齿。在接触过程中，所涉及的齿面将分别加热和冷却，它们的接触模式可以通过红外相机记录。与80年代和90年代进行的齿接触模式的先前热成像调查相比，预期显著改善的信噪比，从而导致适合于工业目的的检测方法。研究项目的目标是从理论上检验和评估新方法的可行性。为此，测量过程分为几个步骤，依次进行分析（热生成和扩散，直到牙齿接触的时刻，热传递到第二个相关的齿面，热扩散后的牙齿接触，红外成像的所得牙齿温度分布）。将使用有限元法计算温度分布。最后，考虑红外摄像机的噪声特性，对温度检测进行了仿真。齿面接触后的热扩散会造成接触斑的红外图像或多或少的模糊。因此，原始接触图案必须从模拟测量中重建。这将使用神经网络工具来实现。项目结果将形成针对新检测方法实验验证的规划依据。