In cooperation with science
Many developments associated with rotary swaging drive the Felss experts on internally. At the same time, university partners have also supported a series of research projects. Felss uses the science know-how, for example, to further enhance the marketability of patents or to shorten the “time to market”.
Various assignments in the field of process and machine technology
Production technology and forming machines
- Preparation and testing of a computer-based knowledge base for predicting the forming forces during cold rotary swaging
- Comparative studies of the force requirements in cold rotary swaging with different machine designs
- Extension of the process technology for axial-radial forming
- Development of a technology processor to investigate cold rotary swaging using 3D-Finite element analyse
Production technology and manufacturing plants.
Investigation into various infeed systems and their influence on the rotary swaging process.
University of Siegen
Process reliable tube bending The demand for higher energy efficiency, more efficient use of resources and greater packing density of modern drives increases the demands on the geometric quality of formed or bent fluid conducting tubes in terms of the tolerances of cutting manufacturing processes. Tolerances during tube bending as the transforming manufacturing process result from the mechanical rigidity of the machine, the rigidity of the control process and the tribological relationships.
The variations of the characteristics of the semi-finished product also have a significant effect. Conditioned by the tube manufacturing process, the geometric and material parameters Wall thickness course, Tube diameter and Flow curve of the material are all subject to tolerances. The variation of these influences produces different rebounds, varying bending moment, different forces and deformation of the bending device. The aim of the research project is to develop an innovative bending machine that can compensate tolerances of such parameters through a robust process and can guarantee an ideal process result.
Institute for Automotive Technology and Mechatronics
High pressure production autofrettage The aim of the HoPA project is to develop an autofrettage system that enables process specifications to be converted in a commercial production facility. The series suitability is validated by a testing method and associated testing facility that is to be developed. The fuel consumption of vehicles is significantly influenced by the design of the injection technology. Higher pressures are therefore better. These higher operating pressures however disproportionately affect the service life of the injection components. Autofrettage (AF) is used to increase the service life for operating pressures of ca. 2,400 bar. By applying a one-off very high internal pressure (up to 8,000 bar), the fatigue strength is significantly increased through targeted plastification and build-up of the internal stress. The Autofrettage process that in theory is not very fail-safe and is difficult to test needs to continue to be improved in order to meet the market requirements of ever increasing AF pressures exceeding 10,000 bar in a series-proven and economical way.