Kolohoida A. Improving the efficiency of grinding the needle roller of the carding machine the oriented grinding wheel face.

The dissertation is devoted to the issues of increasing the efficiency of grinding the needle roller of the carding machine the oriented grinding wheel face due to the development of new methods for sharpening the needle surface, and determining the conditions for their use. Three-dimensional modular models of the tool surface, the processes of removing the allowance and shaping during grinding with crossed axes of the tool and needle roller are proposed. Based on their analysis, methods for grinding a needle surface are created. The orientation angle of the tool is chosen from the condition of full loading of the grinding wheel face. Feed per revolution is calculated from the condition of the maximum allowable heat stress of the process, which the material structure remains unchanged. There is more uniform distribution of the allowance is achieved along the grinding wheel face, and the end face does not take part in the processing by introducing the angle of rotation of the tool. Dependencies to determine the parameters of the cut layer, the components of the cutting forces and power, and the heat stress of the process are improved. The influence of cutting and deforming grains, the dynamic characteristics of the part and the processing system are taken into account here. A technique determining processing capacity has been developed. It takes into account the stiffness of the workpiece. There are a number of experimental studies of the grinding the needle roller of the carding machines the oriented grinding wheel face, which confirmed theoretical studies.