Transfer of the Method for the psychoacoustic Design of Ground Bevel Gears extended by the Application of a Targeted Micro Geometry Scatter

通过应用目标微观几何散射扩展磨齿锥齿轮心理声学设计方法的迁移

基本信息

批准号：
384949278
负责人：
Professor Dr.-Ing. Christian Brecher
金额：
--
依托单位：
Klingelnberg GmbH
依托单位国家：
德国
项目类别：
Research Grants (Transfer Project)
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2021-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/384949278?language=en
关键词：
Transfer Method psychoacoustic Design Ground

项目摘要

The requirement on gears and transmissions are determined by external conditions as the legislation as well as the competitive situation on the world market. The continuous demand for higher power densities for the increase of the efficiency can be achieved by a reduction of the involved masses and by an increased load-carrying capacity via new materials. Furthermore, a major requirement by the transmission is a low noise level. Especially bevel gears, with comparatively low contact ratios because of the high values for the modifications, are often described as noise critical.Lapped bevel gear set are perceived as being quieter or smoother compared to ground bevel gear sets. Current investigations lead to the fact that the manufacturing related microgeometry scatter and pitch deviation can be identified as the root cause. Ground bevel gears in contrast have a high reproducibility of the manufactured geometry with low pitch deviations. The high reproducibility of the geometry may lead to a tonal noise spectrum. The implementation of targeted pitch deviations is used for fan applications to reduce the amplitudes of higher harmonics of the rotor blade frequency. In gear applications, the pitch deviation for reduction of tonality is avoided, as it may lead to premature tooth meshing which lead to a decrease of the load-carrying capacity. The aim of this research project is the transfer of the method for psychoacoustic design of bevel gears on an automotive application. Therefore, the existing methods of the dynamic simulation of the tooth mesh and the psychoacoustic design of gears provide the basis for the project and will be extended for the simulation of a complete tooth hunt in order to implement an increase of the background noise level by a targeted topography scatter. The topography scatter is used to reduce the tonality of the noise spectrum. Using the FE-based tooth contact analysis, a simulation of a gear set with individual micro geometries for each tooth is realized. In order to assure the productivity of the process The manufacturing process of the topography scatter needs to be realized without an extra dressing operation. Furthermore, it is necessary to define the microgeometry scatter which avoids disadvantages for the load-carrying capacity. The transferred methods and the gained knowledge will be applied on an automotive transmission and will be validated by test rig trials and vehicle measurements. The result of the planned research project is a novel method for optimizations of the acoustic behavior of bevel gears based on a targeted topography scatter.

对齿轮和传输的要求取决于外部条件作为立法以及世界市场的竞争状况。通过减少相关质量以及通过新材料增加负载携带能力，可以实现对效率提高的更高功率密度的持续需求。此外，传输的主要要求是低噪声水平。尤其是由于修饰的高值，斜角齿轮的接触率相对较低，通常被描述为噪声关键。与地面斜角齿轮集相比，倾斜的斜角齿轮集被认为是安静或更平稳的斜角齿轮。当前的研究导致这样一个事实，即可以将相关的微几何分散和俯仰偏差确定为根本原因。相比之下，地面斜角齿轮具有高螺距偏差的制成几何形状的高可重现性。几何形状的高可重复性可能导致音调噪声谱。靶向音高偏差的实现用于风扇应用，以减少转子叶片频率较高谐波的幅度。在齿轮应用中，避免了音调降低的音高偏差，因为这可能导致过早的牙齿缝隙，从而导致负载能力的降低。该研究项目的目的是转移汽车应用程序上斜角齿轮的心理声音设计方法。因此，现有的牙齿动态模拟和齿轮的心理声音设计的方法为项目提供了基础，并将扩展以模拟完整的牙齿狩猎，以便通过a实现背景噪声的增加目标地形散射。地形散射用于降低噪声光谱的音调。使用基于FE的牙齿接触分析，实现了对每个牙齿具有单个微观几何形状的齿轮集的模拟。为了确保过程的生产率，需要实现地形散点的制造过程，而无需额外的敷料操作。此外，有必要定义微观散射，以避免负载能力的缺点。转移的方法和所获得的知识将应用于汽车传输，并通过测试钻机试验和车辆测量结果进行验证。计划研究项目的结果是一种基于目标地形散射的斜角齿轮的声学行为进行优化的新方法。