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Development of a force model for the prediction of the contact forces and frequencies between chips and work piece in unguided vibratory finishing process

开发力模型，用于预测无导向振动精加工过程中切屑和工件之间的接触力和频率

基本信息

批准号：
244325741
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：
2013
资助国家：
德国
起止时间：
2012-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/244325741?language=en
关键词：
Development force model prediction contact

项目摘要

The contact forces and frequencies between work piece and chips in vibration finishers are a major determinant of the unguided vibratory finishing process that affect the machining properties and thus the surface quality, the edge rounding or the removal rate significantly. The contact forces and frequencies in unguided vibratory finishing processes cannot be described or determined by measurements till this day. Therefore, a measurement system will be developed in this research project, which is able to determine the contact force and frequency of the workpiece edges and surfaces, which are caused by contact with the chips, depending on relevant factors in unguided vibratory finishing process for the first time. These variables are used as the basis for a force model describing the work piece and chip interaction. Despite the high economic importance of surface finishing technology in vibration finishers are no comprehensive process models for the prediction of the process result. As a basis for such a process model in this DFG research project, a force model will be developed, which describes the interactions between the chips and the work piece within the unguided vibratory finishing process and predicts the contact forces and frequencies. The knowledge of the force variables help to describe the tribological system which prevails in the unguided vibratory finishing process. Based on these results it will be possible to understand the cutting mechanisms in unguided vibratory finishing. This includes important insights that allow direct control of the removal rate, the surface quality and the edge rounding of the work piece.

在无导向振动光整加工过程中，工件与切屑之间的接触力和接触频率是影响加工性能的主要因素，从而对加工表面质量、边缘圆度和去除率产生重要影响。在无导向振动光整加工过程中的接触力和频率直到今天还不能通过测量来描述或确定。因此，本研究计画将发展一套量测系统，首次能依据无导向振动光整加工过程中之相关因素，量测工件边缘与表面因与切屑接触所产生之接触力与频率。这些变量被用作描述工件和芯片相互作用的力模型的基础。尽管表面光整技术在振动光整机中具有很高的经济重要性，但目前还没有用于预测加工结果的综合工艺模型。作为这种工艺模型的基础，在这个DFG研究项目中，将开发一个力模型，它描述了无导向振动光整加工过程中的芯片和工件之间的相互作用，并预测接触力和频率。力变量的知识有助于描述在无导向振动光整加工过程中普遍存在的摩擦学系统。基于这些结果，将有可能了解在无导向振动光整加工的切削机理。这包括直接控制工件的去除率、表面质量和边缘修圆的重要见解。