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.

振动精加工中工件和切屑之间的接触力和频率是无导向振动精加工工艺的主要决定因素，它会显着影响加工性能，从而显着影响表面质量、边缘倒圆或去除率。直到今天，无导向振动精加工过程中的接触力和频率还无法通过测量来描述或确定。因此，本研究项目将开发一种测量系统，能够根据无导向振动精加工过程中的相关因素，确定工件边缘和表面因与切屑接触而产生的接触力和频率。第一次。这些变量用作描述工件和切屑相互作用的力模型的基础。尽管振动精加工机中的表面精加工技术具有很高的经济重要性，但还没有用于预测工艺结果的综合工艺模型。作为该 DFG 研究项目中此类工艺模型的基础，我们将开发一个力模型，该模型描述非制导振动精加工工艺中芯片和工件之间的相互作用，并预测接触力和频率。了解力变量有助于描述无导向振动精加工过程中普遍存在的摩擦学系统。基于这些结果，将有可能了解无导向振动精加工中的切削机制。这包括可以直接控制工件的去除率、表面质量和边缘倒圆角的重要见解。