Autonomous calculation of stability lobe diagrams, based on sensory structural compo-nents of a milling center

基于铣削中心的传感结构组件自主计算稳定性波瓣图

• 批准号: 416001186
• 负责人: Professor Dr.-Ing. Berend Denkena
• 金额: --
• 依托单位: Institut für Fertigungstechnik und Werkzeugmaschinen (IFW)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/416001186?language=en
• 关键词: Autonomous; calculation; stability; lobe; diagrams

Chatter vibrations result in higher of tool- and machine loads as well as the manufacturing of reject parts. Hence, process parameters are currently being reduced in order to avoid chatter vibrations or suitable sets of parameters must be determined experimentally. However, this approach results in a reduction of productivity or a high effort in the production planning respectively. Therefore, the goal of this research project is the investigation of a system for autonomous calculation of stability lobe diagrams. First, the coefficients of a cutting force model are calculated based on the quasistatic process force. With the cutting force model, it is possible to calculate dynamic cutting forces. With the calculated dynamic cutting forces as input and the cutting forces, measured with the sensory structure components, as output it is possible to determine the dynamic properties of the tool/tool-holder/machine combination. Based on the cutting force model and the determined system model it is possible to calculate a stability lobe diagram in a first approximation. As soon as process data from different cutting conditions are available, an optimization-algorithm is to be used to reduce modelling errors in the cutting force model and the system model.

聊天振动导致工具和机器负载的较高以及拒绝零件的制造。因此，目前正在减少过程参数，以避免颤动或必须通过实验确定合适的参数集。但是，这种方法分别导致生产力降低或分别在生产计划中付出了很大的努力。因此，该研究项目的目的是研究稳定性叶图的自动计算系统。首先，根据准危过程力量计算切割力模型的系数。使用切割力模型，可以计算动态切割力。通过计算出的动态切割力为输入和使用感官结构组件测量的切割力，随着输出可以确定工具/工具控制器/机器组合的动态属性。基于切割力模型和确定的系统模型，可以在第一个近似值中计算稳定性叶图。一旦获得不同切割条件的过程数据，就要使用优化 - 算法来减少切割力模型和系统模型中的建模误差。