GRINDING OF MICROSTRUCTURED FUNCTIONAL SURFACES -A NOVEL STRATEGY FOR DRESSING OF MICROPROFILES ON VITRIFIED GRINDING WHEELS

摘要

For grinding of microstructures like riblets a novel dressing strategy using a profile roller was applied to vitrified bonded grinding wheels. Through the dressing kinematic using a profile shift kinematic the limit of the smallest dressable wheel profile tip geometry could be reduced significantly. To achieve smaller profile breakouts and higher profile accuracy, small dressing infeed and the up dressing modus should be chosen. Furthermore, the angle of the roof profile has a high impact on the profile stability at dressing as well as the tool wear behavior at grinding. To achieve optimal grinding results concerning the geometrical aspect ratio of the ground microstructure, both the profile angle and the cutting rate at grinding should be taken into account.