Determination of Optimal Conditions for Flat Grinding of 20 Kh Steel Workpieces

Abstract

Flat peripheral grinding of 20 Kh steel, samples are studied. The authors propose a method of determining optimal conditions for grinding sample surfaces that guarantees obtaining the predefined quality requirements to the machined surface (surface roughness parameter Ra, the absence of grinding burns), while ensuring the maximum efficiency of the process. The mathematical models of the cutting force components reduced to the width of the sample, grinding ratio, and roughness of the machined surface (Ra parameter) are obtained by the method of full factorial experiment of the 24 type, where 4 is the number of factors. The input factors (grinding wheel hardness, depth of grinding, table feed speed, and run reduced to the width of the machined surface) are considered as the optimization parameters of the grinding process. The mathematical models of the output factors are used to limit the range of allowable values of the optimization parameters. The resulted efficiency is an objective function. The optimization of parameters in the range of allowable values is carried out with the view of ensuring maximum efficiency of the process.