Development of a General Function Oriented Method to Design Flank Modifications of Beveloids under Consideration of Producibility

考虑可生产性的情况下，开发一种面向通用功能的方法来设计斜角的侧面修正

基本信息

批准号：
274876554
负责人：
Professor Dr.-Ing. Christian Brecher
金额：
--
依托单位：
Forschungsbereich Werkzeugmaschinen
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2019-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/274876554?language=en
关键词：
Development General Function Oriented Method

项目摘要

A particular gear type which becomes more and more important is the beveloid gear, also known as conical involute gear. This is manly due to their ability to realize small crossing angles between shafts and they can be produced economically on conventional gear grinding machines. Beveloid gears have been used in marine applications, for example, for many years. In recent years the use of beveloid gears in the automotive sector has increased. Here the beveloid gear is used, for example in four wheel drives to transmit torque and rotation from the output of the gearbox to a front axle that may not be parallel.The running behavior of gears is generally characterized by load carrying capacity and noise vibration harshness (NVH). Conventional flank modifications, like crownings and angle modifications, can be used to optimize the running behavior. For beveloid gears this optimization reaches its limits. Due to the geometry and positioning of beveloid gears it is not possible to realize full line contact instead of point contact by using standard modifications. Line contact leads to a better load distribution on the tooth flanks which leads to decreased Hertzian stresses. In existing designs for realizing line contact the machinability of the flank modifications is not regarded. Furthermore there exist no methods to measure and tolerate these topological modifications.For spur and helical gears exist methods to manufacture topological flank modifications. But the process stability and profitability of this manufacturing method is low. Thus standard manufacturing processes like the continuous generating grinding are preferred to match economical and technical requirements. Additionally there exists no function oriented method to tolerate topological flank modifications. Ergo the full potential of topological flank modifications is not completely utilized.Hence, regarding the actual state of the art, the aim of this research project is to develop and verify a general function oriented method to design flank modifications of beveloids under consideration of producibility. The definition of existing flank modifications is extended in that way that topological modifications are defined locally for each point of the flank. The purpose of this method is the optimization of the beveloid gears running behavior (load carrying capacity and NVH), regarding the constraints of standard manufacturing processes.

变得越来越重要的特定齿轮类型是斜角齿轮，也称为圆锥形的齿轮。这是男子气概的，因为它们能够实现轴之间的小交叉角度，并且可以在常规的齿轮研磨机上经济生产。例如，多年来，已在海洋应用中使用了斜角齿轮。近年来，在汽车行业中使用了洞穴齿轮有所增加。在这里，使用了孔洞齿轮，例如，在四轮驱动器中，将扭矩和从变速箱的输出旋转到可能不平行的前桥。齿轮的运行行为通常以负载能力和噪声振动刺激性（NVH）为特征。常规的侧面修改（例如冠状和角度修改）可用于优化跑步行为。对于洞穴齿轮，此优化达到了极限。由于几何形状和斜角齿轮的定位，无法通过使用标准修改实现全线接触而不是点接触。线接触会导致牙齿侧面更好的负载分布，从而导致赫兹的压力减少。在实现线路联系的现有设计中，不考虑侧面修改的可加工性。此外，没有方法可以测量和耐受这些拓扑修饰。对于刺激和螺旋齿轮，存在制造拓扑侧面修饰的方法。但是这种制造方法的过程稳定性和盈利能力很低。因此，诸如连续生成研磨之类的标准制造过程比经济和技术要求匹配。另外，没有以功能为导向的方法来耐受拓扑侧翼修饰。 Ergo并未完全利用拓扑侧面修改的全部潜力。因此，关于实际的技术状态，该研究项目的目的是开发和验证一种以一般功能为导向的方法来设计正在考虑生产性的洞穴的侧面修饰。现有侧面修改的定义以这种方式扩展，即在侧面的每个点本地定义拓扑修改。该方法的目的是优化标准制造过程的限制，对期权齿轮运行行为（负载承载能力和NVH）的优化。