The compensation of geometrical errors on forming grinding

摘要

Form grinding produces a surface with a particular profile. In a plug-grinding system, the shapedwheels transfer their profile to the ground work surface. Several factors affect the geometrical errorsthat occur in grinding, including thermal deformation, the cutting forces of the workpiece and thewear and the plastic deformation of the grinding wheel, owing to the different profile sections of agrinding wheel diameter. This work develops a mathematical model of the thermal deformation andcutting forces by utilizing the thermal bending moment and specified grinding energy proposed inother research. The wear and deformation of a grinding wheel are analyzed using experimental data.The model is formulated using simple contours and the resulting predictions of geometrical errors arecompensated for by altering the path of a diamond tool using the CNC controller in the grindingmachine. In addition, a series of experiments is carried out on different slopes with box convex andconcave profiles. These results demonstrate that the geometrical errors that occur commonly in formgrinding can be reduced by more than 70%.