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Zusammenfassung
Aufgrund steigender Anforderungen an den Wirkungsgrad und die Geräuschanregung von Zahnradgetrieben ist die Hartbearbeitung von Zahnrädern für viele Anwendungen zu einem notwendigen Prozessschritt geworden. Die Hartfeinbearbeitung durch Schleifen ist ein etabliertes Herstellungsverfahren für verschiedene Arten von Zahnrädern, da ein...
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In rolling or gear contacts, truncation of the contact ellipse can occur, for example, when an undercut extends into the contact area. For an elastic calculation approach, the edge constitutes a mathematical singularity, which is revealed by a theoretically infinitely high pressure peak. However, when elastic–plastic material behavior is taken into...
Citations
The automotive industry is undergoing a major transformation driven by regulations and a fast-paced electrification. A critical analysis of technological trends and associated requirements for major automotive powertrain components is carried out in close collaboration with industry – covering the perspectives of OEMs, suppliers, and machine builders. The main focus is to review the state of the art with regard to grinding, dressing, texturing and fine-finishing technologies. A survey of research papers and patents is accompanied by case studies that provide further insights into the production value chain. Finally, key industrial and research challenges are summarized.
Grinding is an established process for gear manufacturing, as good geometric and surface quality can be achieved. For bevel gears, grinding is used in case of high demands on accuracy and reproducibility. In industry, design of bevel gear grinding processes is usually based on experience. An efficient design of grinding processes can be performed based on the cutting force. Knowledge of the cutting force is necessary to predict the process influence on the workpiece and the wear of the grinding tools. For bevel gear grinding, no cutting force models exist. To model the cutting force in grinding processes, the contact conditions must be known. In this report, a model of the geometric contact conditions in bevel gear grinding is presented. The model is validated by comparing the simulated bevel gear flank with the ideal flank. Finally, the relation between simulation and measured process loads is analyzed.
