Abstract
The paper analyzes the influence of the diamond wheel grains concentration during grinding of difficult-to-machine materials (carbonado synthetic polycrystalline diamond CSPD, sitall AC-418, cemented carbide type DIN HG30) on the output indicators of the process. Using the SIMULIA Abaqus, SOLIDWORKS Simulation, and Ansys LS-DYNA software packages, the nature, magnitude, and location of equivalent stresses in the “diamond grain – bond” system were determined under thermal and force loading corresponding to the actual grinding process. Microlevel 3D models of the diamond-bearing layer of a wheel with different grain concentrations of 25%, 50%, and 100% were developed. The change in the localization area and the maximum stress with a change in the grain concentration are established. At a concentration of 25%, the maximum equivalent stresses are located in the volume of grains for all processed materials. An increase in concentration to 50% causes the appearance of equivalent stresses along the boundary of grain embedding in a bond, the value of which is 2 times higher than the stresses in the diamond grain. The highest stress level is observed at 100% grain concentration in the wheel for all types of processed materials. Based on the results of dynamic modeling, the dependences of the destruction volumes of diamond grains, bonds, and the processed material on the concentration of diamond in the grinding wheel and the type of the processed material were obtained. A method for predicting grinding productivity, diamonds’ specific wear and specific consumption during the grinding of difficult-to-machine materials is proposed.
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Kundrak, J., Fedorovich, V., Pyzhov, I., Ostroverkh, Y., Pupan, L. (2023). Numerical Simulation of Grain Concentration Effect on Output Indicators of Diamond Grinding. In: Tonkonogyi, V., Ivanov, V., Trojanowska, J., Oborskyi, G., Pavlenko, I. (eds) Advanced Manufacturing Processes IV. InterPartner 2022. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-16651-8_16
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