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Mathematical modeling of the surface roughness of the grinding wheel during straightening

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Parent Category: 2021

Category: Content №1 2021

Created on 05 March 2021

Last Updated on 05 March 2021

Published on 30 November -0001

Written by R.M.Strelchuk, S.M.Trokhimchuk

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Authors:

R.M.Strelchuk, orcid.org/0000-0002-7221-031X, Ukrainian Engineering Pedagogics Academy, Kharkiv, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

S.M.Trokhimchuk, orcid.org/0000-0001-9019-9102, Ukrainian Engineering Pedagogics Academy, Kharkiv, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2021, (1): 053 - 059

https://doi.org/10.33271/nvngu/2021-1/053

Abstract:

Purpose. Research on the mechanism of influence of the straightening conditions of the grinding wheel, including the relative oscillations of the wheel and a multipoint diamond dresser, on the roughness of the ground surface and other machining results.

Methodology. Straightening a grinding wheel with a multipoint diamond dresser is a process of high-speed destruction of a hard, abrasive material and its bond under the instantaneous forces, abrasive grains with a hard surface of a diamond crystal. During the grinding wheel straightening, the total component of normal forces causes correspondingly less elastic deformations in the wheel straightening tool system, which increases the accuracy of the geometric shape of the grinding wheel working surface.

Findings. The research results make it possible to determine the parameters of the surface roughness of a workpiece and to find ways to control it to increase the efficiency of the grinding process.

Originality. The regularities of the influence of the grinding wheel straightening conditions on the state of its working surface have been established. The paper shows that the initial arrangement of grains along the normal to the surface of the wheel is determined by its characteristics. When the abrasive grains hit the surface of the straightening tool, some of the vertices are chipped off, as a result of which the density of the grain vertices on the outer surface of the wheel increases. The straightening process was further developed in the direction of the non-uniform character of the location of the vertices of abrasive grains. The distribution of the grain position at the wheel bond depends on the straightening conditions. Since the removal of the allowance in the process of grinding is carried out by the most protruding grain vertices, then, consequently, the result of grinding will depend on their location and the conditions for the wheel straightening.

Practical value. Application of the research results obtained in the work, namely, mathematical modeling of the surface roughness of the grinding wheel during straightening, makes it possible to calculate the roughness parameter of the ground surface. The work also shows that the level of chipping of the grain vertices depends on the grinding wheel straightening conditions, in particular, on the value of the axial feed of the straightening tool. In this case, lower stresses arise in the grains and the bond, and the tool works as a harder one. Straightening conditions affect the stability of the grinding wheel and its self-sharpening process in the machining zone. This determines the significant role of straightening in the results of the grinding process.

Keywords: profile deviation, straightening conditions, grinding wheel

References.

1. Kuzin, V.V., Fedorov, S.Y., & Grigorev, S.N. (2017). Correlation of Diamond Grinding Regime with Surface Condition of Ceramic Based on Zirconium Dioxide. Refractories and Industrial Ceramics, 57(6), 625-630. https://doi.org/10.1007/s11148-017-0035-x.

2. Tu, L., Li, J., & Shi, W. (2020). Investigation on experiment and simulation of the grinding process of cast iron. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 234(13), 2653-2661. https://doi.org/10.1177/ 0954406220907928.

3. Patel, A., Bauer, R.J., & Warkentin, A. (2019). Investigation of the effect of speed ratio on workpiece surface topography and grinding power in cylindrical plunge grinding using grooved and non-grooved grinding wheels. The International Journal of Advanced Manufacturing Technology, 105(7), 2977-2987. https://doi.org/10.1007/s00170-019-04406-6.

4. Hung, L.X., Hong, T.T., Ky, L.H., Tuan, N.Q., Tung,L.A., Long, B.T., & Pi, V.N. (2019). A Study On Calculation Of Optimum Exchanged Grinding Wheel Diameter When Internal Grinding. Materials Today: Proceedings, 18, 2840-2847. https://doi.org/10.1016/j.matpr.2019.07.151.

5. Shi, X., & Xiu, S. (2020). Study on the hardness model of grinding for structural steel. The International Journal of Advanced Manufacturing Technology, 106(7), 3563-3573. https://doi.org/10.1007/s00170-019-04787-8.

6. Suya Prem Anand, P., Arunachalam, N., & Vijayaraghavan,L. (2018). Effect of grinding on subsurface modifications of pre-sintered zirconia under different cooling and lubrication conditions. Journal of the Mechanical Behavior of Biomedical Materials, 86, 122-130. https://doi.org/10.1016/j.jmbbm.2018.06.026.

7. Strelchuk, R., Trokhymchuk, S., Sofronova, M., & Osipova, T. (2020). Revealing patterns in the wear of profile diamond wheels. Eastern-European Journal of Enterprise Technologies, 3(1(105)), 30-37. https://doi.org/10.15587/1729-4061.2020.203685.

8. He, Q., Xie, J., Lu, K., & Yang, H. (2020). Study on in-air electro-contact discharge (ECD) truncating of coarse diamond grinding wheel for the dry smooth grinding of hardened steel. Journal of Materials Processing Technology, 276, 116402. https://doi.org/10.1016/j.jmatprotec.2019.116402.

9. Denkena, B., Grove, T., & Suntharakumaran, V. (2020). New profiling approach with geometrically defined cutting edges for sintered metal bonded CBN grinding layers. Journal of Materials Processing Technology, 278, 116473. https://doi.org/10.1016/j.jmatprotec.2019.116473.

10. Zhou, K., Ding, H., Wang, R., Yang, J., Guo, J., Liu, Q., & Wang, W. (2020). Experimental investigation on material removal mechanism during rail grinding at different forward speeds. Tribology International, 143, 106040. https://doi.org/10.1016/j.triboint.2019.106040.

11. Guo, Y., Liu, M., & Li, C. (2020). Modeling and experimental investigation on grinding force for advanced ceramics with different removal modes. The International Journal of Advanced Manufacturing Technology, 106(11), 5483-5495. https://doi.org/10.1007/s00170-020-05013-6.

12. Kalchenko, V.V., Yeroshenko, .., Boyko, S.V., &Ignatenko, P.L. (2019). Determination of instantaneous temperature in the cutting zone during abrasive processing, Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (5), 35-40. https://doi.org/10.29202/nvngu/20195/14.

13. Li, C.L., Peng, Y., Chen, D.L., & Pan, T.L. (2018). Theoretical investigation of vertical elliptic vibration-assisted grinding (EVAG) technology. The International Journal of Advanced Manufacturing Technology, 94(5), 2315-2324. https://doi.org/10.1007/s00170-017-0989-3.

14. Kalchenko, V.V., Yeroshenko, .., & Boyko, S.V. (2017). Mathematical modeling of abrasive grinding working process, Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (6), 76-82.

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