Modern methods and tools for improving grinding efficiency

In modern machine-building products, parts with high-precision cylindrical, conical, end, spherical, toroidal, helical, and curved surfaces are widely used for their service, the final quality of which is determined by finishing operations. The labor intensity of operations performed on grinding machines equipped with abrasive tools is constantly increasing in the total amount of labor intensity of processing and is on average 25-30 %, and in some industries up to 50% of the total labor intensity of processing. Therefore, it is very important to search for new and implement progressive existing methods of abrasive processing covering a wide range of machined parts for various purposes in order to increase the efficiency of processes. This has an important national economic significance for machine building, machine tool building, automotive, textile, timber industries, pipe rolling production and the energy industry of Ukraine. In the work, research and systematization of the main factors affecting the accuracy of dimensions, shape and location deviations, surface roughness, hidden defects, process productivity during abrasive processing of a wide range of products were carried out. On the basis of the conducted analysis, it is proposed to use modern methods, equipment, tools and materials such as super abrasive materials, innovative grinding wheels, grinding systems with liquid nitrogen cooling, minimal lubrication (MQL), high-speed grinding (HSG), use of CNC systems. The article is a review and informational publication.