Paper Title
STUDY ON SHARPENING HELICAL FLUTE HOBS USING STANDARD FORM GRINDERS

Abstract
Gear hob sharpening machines, also called hob sharpeners, are specialized forms of grinding equipment. Unlike standard form grinders, hob sharpenersuse only one side of the grinding wheel to sharpen the hob cutter’s edge, creating a straight profile in the axial section of the cutter. The mechanism configuration of traditional hob sharpenersdiffers from that of form grinding machines, incorporating a tiled spindle to make it easier to get the corresponding wheel profile by adjusting the circular reference template. In this study, we applied the meshing conditionsfrom theory of the gearing to develop mathematical models formachine setups and wheel profiles required to sharpen helical flute hobs. Additionally, we createda transformed model to adapt machine setups from hob sharpenersto5-axis form grinding machines. These models were then integrated into custom software that can be installed on5-axis CNC form grinders without hardware modifications. Finally, the software’s performance was verified using expert measuring equipment, with results indicating hob sharpening accuracy significantly surpassing DIN AA grade. Keywords - Hob Sharpening, Helical Flute Hob Sharpening, Forming Grinding, 5-Axis Form Grinder, Machine Setting