Tandecka Katarzyna, Kacalak Wojciech, Szafraniec Filip, Mathia Thomas G
Department of Engineering and Informatics Systems, Faculty of Mechanical Engineering and Energy, Koszalin University of Technology, 75-620 Koszalin, Poland.
Laboratoire de Tribologie et Dynamique des Systemes (LTDS), Ecole Centrale de Lyon, Centre National de la Recherche Scientifique, 69134 Lyon, France.
Materials (Basel). 2024 Dec 23;17(24):6305. doi: 10.3390/ma17246305.
This work investigates the contact between abrasive particles and workpieces in microfinishing processes with special consideration given to the determination of unit force, unit pressure, and grain, the forces exerted by individual abrasive grains. A detailed methodology was established for measuring the contact area, penetration depth, and circumferences of grain imprints at depths corresponding to multiples of the total height of the abrasive film, represented by the parameter . The following depths were analyzed: 0.05 , 0.15 , 0.25 , and 0.35 . Results show that the areas closer to the central microfinishing zone bear the highest unit pressures and forces and, thus, contribute dominantly to material removal. It was further found that near the edges of the contact zone, the pressure and force have been reduced to lower material removal efficiency. The non-uniform geometry of abrasive particles was found to significantly affect contact mechanics, more at shallow depths of penetration, whereas the shape of the apex defines the nature of the interaction. A parabolic force and pressure distribution were evident for the irregular load distribution of the microfinishing area. The result brings out the need for further refinement in the design of the abrasive film and pressure distribution in order to achieve improvement in uniformity and efficiency during microfinishing. It would bring out valuable insights on how to improve the effectiveness of an abrasive film and ways of optimizing the process conditions. The results provide a founding stone for further advancement of knowledge in the grain-workpiece interaction, enabling better surface quality and more reliable microfinishing processes.
本研究探讨了微精加工过程中磨粒与工件之间的接触情况，特别关注单位力、单位压力以及单个磨粒所施加的力的确定。建立了一种详细的方法，用于测量与磨料膜总高度倍数相对应深度处的接触面积、 penetration depth（此处原文有误，可能是penetration depth，即穿透深度）以及磨痕周长，这些深度由参数表示。分析了以下深度：0.05、0.15、0.25和0.35。结果表明，靠近中央微精加工区域的区域承受着最高的单位压力和力，因此对材料去除起主要作用。进一步发现，在接触区域边缘附近，压力和力降低，导致材料去除效率降低。发现磨粒的非均匀几何形状会显著影响接触力学，在浅穿透深度时影响更大，而磨粒顶端的形状决定了相互作用的性质。对于微精加工区域不规则的载荷分布，力和压力呈抛物线分布。结果表明，为了在微精加工过程中提高均匀性和效率，需要进一步优化磨料膜的设计和压力分布。这将为如何提高磨料膜的有效性以及优化工艺条件提供有价值的见解。这些结果为进一步推进磨粒与工件相互作用的知识奠定了基础，有助于实现更好的表面质量和更可靠的微精加工过程。
