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IMPROVING THE EFFICIENCY OF FINISHING

The issues of finishing operations of machining and providing a reasonable choice of optimal options, taking into account the distribution between the removal of material by the tool and the friction of the ligament at the contact. At the same time it is necessary to ensure the greatest possible protrusion of the tops of the grains above the level of ligament of the circle, as well as the timely removal of blunt grains from the working surface of the circle. The use of tools with increased physical and mechanical capabilities for processing with exfoliation of the surface layer of the workpiece is proposed. The essence of the process is that it concentrates all the removal of material on a narrow contact length, while providing maximum speed with the lowest specific grinding energy. When grinding by exfoliation in the area of removal of the removal allowance is an order of magnitude higher than when conventional grinding. The contribution of friction and plowing energy becomes a small part of the total specific energy of grinding. The heat released during grinding is reduced, its dissipation conditions in the process of spot grinding are improved. These studies allow us to understand the physical essence of the process, to determine the modes of processing, as well as ways to optimize the technological parameters of spot grinding