Contact between abrasive media and workpiece in robot-guided centrifugal finishing

Más información sobre el libro

Robot-guided centrifugal finishing is an innovative manufacturing technology designed for machining complex surfaces and geometries, such as engine blades, with a significantly shorter process time compared to traditional mass finishing methods. This technique has the potential to introduce beneficial residual compressive stresses near the surface of the workpiece, offering a substitute for conventional methods like shot peening. However, the process design remains time- and cost-intensive due to insufficient scientific research on the interaction between abrasive media and the workpiece, hindering a knowledge-based approach. This dissertation explores surface integrity as influenced by process state variables during robot-guided centrifugal finishing. The investigation is structured into three main steps. The first step examines the contact between abrasive media and the workpiece through empirical studies and discrete element method analysis. The second step focuses on understanding friction and material removal mechanisms, utilizing a developed tribometer for empirical friction tests and further investigations into material removal. The final step assesses the resulting surface integrity by conducting empirical studies on workpieces pre-machined with various technologies. The findings culminate in an explanatory model that outlines the cause-and-effect relationships between process input variables, contact parameters, and