Contactless Feeding of Metallic Foils in Micro-Precision Stamping Technology

在微冲压技术中，目前使用辊送系统来输送金属薄片。辊子以如此大的压力压在材料上，从而建立了一种力锁定、防粘滑的连接。高载荷会对材料表面质量产生负面影响，也会导致材料变形。另一方面，轧辊和材料之间较低的接触力会导致高动态运动时的粘滑。这只能通过降低进给速度来避免。在拟议的研究项目中，将发现一种新的非接触式送料原理来输送薄金属箔，以避免上述缺点。其原理是基于异步直线电机的。通过在材料中非接触地引入洛伦兹力来实现进给力，从而消除了上述缺点。该原理将在有限元模型中建模，并将用于对该原理的可行性进行研究。将建造一个演示装置来验证有限元分析的结果。

In the micro-stamping technology, roll-feeding systems are currently used to transport thin metallic foils. The rolls are pressed onto the material with so much pressure, that a force-locked, stick-slip-free connection is established. The high load can have negative influence on the quality of the material surface, or cause material deformation respectively. Lower contact force between the roll and the material on the other hand can result in stick-slip at highly dynamic movements. This can only be avoided by lowering the feed rate. In the proposed research project a new contactless feeding principle will be discovered to transport thin metallic foils to avoid the above mentioned disadvantages. The principle is based on the asynchronous linear motor. Feeding force will be achieved through contactless introduction of Lorentz-Force in the material, which eliminates the above mentioned disadvantages. The principle will be modeled in an FEA model, which will be used to perform studies on the feasibility of this principle. A demonstrator will be built to validate the results of the FEA study.