Investigation into the phenomenological aspects of the grinding process

Abstract

The results of an investigation have been presented in this paper and the conclusions are that the cutting surface of the grinding wheel could be considered as a surface of one element of a tribological pair. Evolution of the tribological process was effectively conducted as based on ground material subjected to fragmentation by one tribological element. It indicates the importance of having a mechanism for approaching surface irregularities of the tribological couple elements which are displaced mutually during grinding. This creates an indirect link between this concept and elementary tribological criteria according to a relation between the average immersion depth h (μm) of the top of surface roughness and the counter-surface to the radius r (μm) of this top. It is consequently related to the maximum roughness height R_t (μm) or average roughness height R_z (μm) of the cutting wheel surface, the average grain size a (μm) and the average distance L_av (mm) between grains in the grinding wheel respectively. It has been concluded in the experimental research that the grinding forces F_t (N) and F_n (N) and the energy-intensity material removal rate K_E (mm³J) are dependent on cutting wheel surface roughness parameters.

Keywords

grinding process phenomenological aspects tribological pair

References

Czichos

Tribology. A System Approach to the Science and Technology of Friction, Lubrication and Wear, 1978 (Elsevier, New York).

Konig

Steffens

Ludewig

Single grit tests to reveal the fundamental mechanism in grinding. In Proceedings of the Milton G. Shaw Grinding Symposium, Florida, 1985, PED-Vol. 16, pp. 141–154 (American Society of Mechanical Engineers, New York).

Hahn

R. S.

Lindsay

R. P.

Principles of grinding. Part 2: The metal removal parameter. Machinery, July-November 1971, 11–17 (1 of a series of 5 parts).

Dabrowski

Marciniak

Efficiency of special segmental grinding wheel. J. Mater. Processing Technol., 2001, 109(3), 264–269.

Moor

D. F.

Principles and Applications of Tribology, 1978 (Pergamon Press, Oxford).

Marciniak

Investigation into grinding process in phenomenological aspect (in Polish). Warsaw University of Technology, Scientific Works, Mechanics, No. 178, 1999.