(1999)
Publication Type: Thesis
Publication year: 1999
Publisher: Meisenbach
Edited Volumes: Fertigungstechnik - Erlangen 87
City/Town: Bamberg
The miniaturization of sheet metal processing processes follows the demands of the industry for weight saving and flexibility in mass production, especially in consumer electronics. When using conventional sheet metal processing methods for the production of components with dimensions in the micrometer range, however, many new questions arise, which result primarily from the increasing importance of the microstructure and the surface topography of the workpiece material. The work examines the effects of miniaturization on the mechanical properties of sheet materials. Process-specific investigations for the shear cutting and bending processes were carried out. The effects of miniaturization on the flow curve, the anisotropy and the ductility were determined with tensile tests. In tests for shear cutting and bending, aspects such as tool loading and work accuracy were in the foreground. Both the selection of the processes and the materials were based on electronics production. A significant miniaturization influence was found for all stress and strain quantities. With increasing miniaturization, these variables are also increasingly influenced by the sample geometry. In bending and shear cutting tests, the special deformation conditions determine the course of the process. A particularly characteristic effect of miniaturization is an inhomogeneous material behavior and increasing resistance to deformation.