Abstract
A large influence on the accuracy and quality of the surface being machined is shown by the temperature processes occurring in the cutting zone at finishing operations, especially such as grinding. Despite a liquid coolant is used to reduce the temperature in a cutting zone, it could become an additional heat source and influence on heating of the grinding machine. To avoid the ingress of heated cutting fluids on the machine parts, devices are used that create an air curtain. The simultaneous effect of flows of cutting fluids and air jets cause a change in heat transfer processes occurring in the cutting zone. The changes of the heat transfer coefficient along the contact line of the grinding wheel and the workpiece are considered in the paper. The phenomenon of overlapping sections of the contact zone of the grinding wheel and the workpiece, that occurs because of the recesses in the coolant under the action of an air jet from both sides is uncovered. It’s determined that the overlap pattern largely depends on the input air pressure and the size of the annular gap between the workpiece and the inner surface of the end elements of the coolant supply device. Construction measures that make it possible to minimize the length of the overlapping sections by air currents are proposed.
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Stepanov, M., Ivanova, M., Litovchenko, P., Ivanova, L., Havryliuk, Y. (2022). Study of Heat Transfer Conditions in the Cutting Zone When Grinding. In: Machado, J., Soares, F., Trojanowska, J., Ottaviano, E. (eds) Innovations in Mechanical Engineering. icieng 2021. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-79165-0_17
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