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

振动抛光机中工件与切屑之间的接触力和频率是无导引振动光整加工过程的主要决定因素，直接影响加工性能，进而影响表面质量、刃口圆角或磨削率。直到今天，无导引振动抛光过程中的接触力和频率还不能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，该系统能够根据无导引振动光整加工过程中的相关因素，首次确定由于与切屑接触而引起的工件边缘和表面的接触力和频率。这些变量被用作描述工件和切屑相互作用的力模型的基础。尽管表面抛光技术在振动抛光机中具有很高的经济重要性，但目前还没有全面的工艺模型来预测加工结果。作为DFG研究项目中这种工艺模型的基础，将开发一个力模型，该模型描述了无导向振动抛光过程中切屑和工件之间的相互作用，并预测了接触力和频率。力变量的知识有助于描述在无导向振动抛光过程中占主导地位的摩擦学系统。基于这些结果，将有可能理解无导向振动光整加工中的切割机理。这包括重要的见解，允许直接控制去除速度、表面质量和工件的边缘圆角。

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.