Extending a cutting force model for generating gear grinding while regarding micro-geometrical influences

扩展切削力模型以生成齿轮磨削，同时考虑微观几何影响

基本信息

批准号：
269650351
负责人：
Professor Dr.-Ing. Fritz Klocke
金额：
--
依托单位：
Werkzeugmaschinenlabor - WZL
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/269650351?language=en
关键词：
Extending cutting force model generating

项目摘要

State of the art for optimizing the load carrying capacity and quietness of gears is the fine finishing of case hardened gears after heat treatment. One option for fine finishing is the generating gear grinding process, which is a wide spread industrial application due to its high productivity. Despite the wide industrial application of the process, only few scientific investigations exist. One possible reason for this is that the contact conditions between tool and gear flank are complex During the grinding process, various tool flanks mesh with various gear flanks. This complicates the transfer of knowledge acquired form other grinding processes. The variation of the contact conditions can lead to a distinct dynamic excitation, which makes the development of the machine and the control engineering a challenge. Knowledge of the expecting cutting forces and their characteristics is necessary for describing the dynamics and optimizing the processes. The actual research project Development of a cutting force model for generating gear grinding of external gears gives a first approach for calculating the forces according Werner and Kassen. However this model simplifies the cutting by the grinding worm. Though necessary cutting force parameters were estimated by literature, the model gives a good qualitatively correlation to force measurements for generating gear grinding. Aim of the applied research project is the extension of the developed cutting force model for the calculation of the local cutting forces for all active tool and gear flanks for generating gear grinding. The extended model considers macro-geometrical parameters of the process as well as the micro-geometrical cutting of single grinding grids by determining appropriate cutting force parameters. With the help of single an multi grid scratch tests of corundum grids and case hardened steel the parameters are defined. Only few scratch tests were realized for these typical materials for the manufacturing process of gears so far. After the definition of the parameters and the model regarding to Werner and Kassen has been expanded for the mentioned materials, the knowledge will be transferred to generating gear grinding. The results of the model will be optimized by force measurements in grinding trials and finally verified by grinding a reference gear and measure the cutting forces.

优化齿轮承载能力和安静的最新水平是热处理后情况硬化齿轮的精细完成。精细修饰的一种选择是生成齿轮研磨过程，由于其高生产率，这是广泛的工业应用。尽管该过程的工业应用广泛，但只有很少的科学研究。造成这种情况的一个可能原因是，工具和齿轮侧之间的接触条件在研磨过程中是复杂的，各种刀具的侧面与各种齿轮侧面。这使知识获取的转移复杂化了其他磨削过程。接触条件的变化会导致独特的动态激发，这使机器的开发和控制工程成为挑战。对预期切割力及其特征的了解对于描述动态和优化过程是必要的。根据Werner和Kassen的说法，用于生成外部齿轮磨削的切割力模型的实际研究项目开发提供了第一种计算力的方法。但是，该模型通过磨蠕虫简化了切割。尽管通过文献估算了必要的切割力参数，但该模型与用于产生齿轮研磨的力测量具有良好的质量相关性。应用研究项目的目的是开发的切割力模型的扩展，用于计算所有活动工具和齿轮侧面的局部切割力，以生成齿轮研磨。扩展模型考虑了该过程的宏观地形参数，以及通过确定适当的切割力参数来对单个研磨网格的微观切割。借助单个刚毛网格和外壳硬化钢的多网格刮擦测试，该参数被定义。到目前为止，对于齿轮制造过程的这些典型材料，仅实现了少量的划痕测试。在对Werner和Kassen的参数定义以及有关上述材料的扩展的模型之后，知识将转移到生成齿轮研磨中。该模型的结果将通过磨练试验中的力量测量来优化，并最终通过磨削齿轮并测量切割力来验证。