Consideration of micro-interaction in the modeling of generating gear grinding processes
Berücksichtigung der Mikro-Interaktion bei der Modellierung von Wälzschleifprozessen
In grinding, the interaction between workpiece material and abrasive tool rotating at high speed generates high thermo-mechanical loads in the contact zone. If these loads reach critically high values, workpiece material properties deteriorate. To prevent the material deterioration, several models for thermomechanical analysis of grinding processes have been developed. In the most recent of these models, the thermo-mechanical energy is modelled considering the kinematic contact between the grains from the grinding wheel, the gear material and the chip. The consideration of the kinematic contact has the advantage of enabling the use of thermo-mechanical models on different dressing and grinding parameters without the need of extensive experimental investigations. In order to use these modern thermo-mechanical energy models, a penetration calculation model considering the tool topography, based on the grinding parameters and kinematics of the process is required. Such a kinematic topography analysis specifically for the process of generating gear grinding was not developed so far. This work presents a method for the integration of tool topography in an already existing geometric penetration calculation model for the simulation of generating gear grinding process. The method will allow the analysis of micro-interaction characteristics in the contact zone for the process of generating gear grinding.