Research on belt grinding for marine propeller blade based on the second-order osculation

An effective method based on the second-order osculation principle is developed for grinding surface in this paper. On the assumption that the elastic contact wheel of abrasive belt grinder is a rigid body, the calculation of the contact wheel posture, the maximum width of the grinding belt, and grinding path are described in detail. Since the contact wheel touches the workpiece surface in line, the deformation of the contact wheel is uniform under the grinding pressure. Then an offset surface can be obtained by translating the tracing surface of the tool axis, and it can approach the machined surface more closely in the grinding process; thus, the precision and efficiency of the machining can be improved effectively. Finally, some machining examples are carried out on a developed five-axis computer numerical control (CNC) belt grinding machine, and the experimental results verify that the proposed method is practical and efficient.