The Determination of Optimal Conditions for Flat Grinding of Steel Workpieces

Flat peripheral grinding of ShKh15 steel samples is studied. The authors propose a method of determining optimal conditions for grinding sample surfaces that guarantees obtaining predefined quality requirements to the machined surface (surface roughness parameter Ra, absence of grinding burns) while ensuring the maximum efficiency of the process.  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. 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.

References

[1] Soler Ia.I., Kazimirov D.Iu. Strategiia ploskogo shlifovaniia detalei peremennoi zhestkosti [The strategy of the flat grinding to details of a variable rigidity]. Metalloobrabotka [Metalworking]. 2006, no. 1, pp. 2–7.

[2] Spravochnik tekhnologa-mashinostroitelia. V 2 t. T. 1 [Reference technologist-mechanical engineer]. Ed. Dal’skii A.M., Kosilova A.G., Meshcheriakov R.K., Suslova A.G. Moscow, Mashinostroenie publ., vol. 1, 2001. 944 p.

[3] Korotkov B.I., Korotkov S.B., Tyshkevich V.N., Orlov S.V. Issledovanie protsessov shlifovaniia vnutrennikh i naruzhnykh konusov detalei klassa kolets [The study of the processes of grinding the inner and outer cones of parts class rings]. Volgograd, Volgograd State Technical University publ., 2007. 133 p.

[4] Nosenko V.A., Tyshkevich V.N., Orlov S.V., Svetlichnaya V.B. The determination of axial displacements during bearing end face grinding. Journal of Machinery Manufacture and Reliability, 2010, vol. 39, iss. 3, pp. 157–160.

[5] Nosenko V.A., Tyshkevich V.N., Orlov S.V., Svetlichnaya V.B. The determination of axial displacements during bearing end face grinding. Journal of Machinery Manufacture and Reliability, 2010, vol. 39, no. 2, pp. 157–160.

[6] Kopetskii A.A., Nosenko V.A., Tyshkevich V.N., Orlov S.V. Vliianie uprugikh deformatsii na pogreshnost’ formy pri zakreplenii i obrabotke kolets podshipnikov [Influence of elastic deformations on error of form at fixing and treatment of rings of bearings]. Fundamental’nye i prikladnye problemy tekhniki i tekhnologii [Fundamental and applied problems of engineering and technology]. 2012, no. 2/3, pp. 103–107.

[7] Nosenko V.A., Orlov S.V., Krutikova A.A. Vliianie rezhimov obrabotki i tverdosti kruga na sostavliaiushchie sily shlifovaniia podshipnikovoi stali [Grinding modes and disk hardness influence upon constituents of grinding forces and bearing steel]. Fundamental’nye i prikladnye problemy tekhniki i tekhnologii [Fundamental and applied problems of engineering and technology]. 2011, no. 4/3 (288), pp. 94–99.

[8] Nosenko V.A., Tyshkevich V.N., Orlov S.V., Sarazov A.V. Ploskoe shlifovanie tortsov kolets krupnogabaritnykh podshipnikov s trebuemym kachestvom poverkhnosti [Flat grinding of big bearing races end with the demanded quality of a surface]. Vestnik Iuzhno-Ural’skogo gosudarstvennogo universiteta. Seriia: Mashinostroenie [Bulletin of the SUSU, Series «Mechanical engineering industry»]. 2014, vol. 14, no. 4, pp. 67–78.

[9] Nosenko V.A., Tyshkevich V.N., Orlov S.V., Sarazov A.V. Optimal’nye usloviia shlifovaniia tortsevykh poverkhnostei kolets krupnogabaritnykh podshipnikov [Determination of optimal grinding conditions of end surfaces of races of big bearings]. Vestnik mashinostroeniia [Russian Engineering Research]. 2015, no. 4, pp. 60–66.

[10] Nosenko V.A., Tyshkevich V.N., Orlov S.V. Obespechenie trebuemogo kachestva tortsovykh poverkhnostei kolets podshipnikov shlifovaniem [Providing the required quality of end surfaces bearing rings grinding]. Sborka v mashinostroenii, priborostroenii [Assembly in mechanical engineering, instrument making], 2015, no. 3, pp. 31–35.