Determination of grain engagement based on real 3D wheel topography for modelling forces and surface during silicon carbide grinding

Clement Lestremau , Charly Euzenat , Frederic Rossi , Guillaume Fromentin , Freddy Guilbaud , Sebastien Denneulin
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引用次数: 0

Abstract

The applications of advanced ceramics such as Silicon carbide (SiC) or Silicon-SiC (Si-SiC) are widely developed in electronic, automotive and aerospace. The grinding of such hard and brittle materials remains challenging in terms of efficiency, accuracy and surface integrity. Grinding process involves the simultaneous interaction of multiple cutting edges with random geometries. The grain engagement is used to analyse and model the forces generated. The uncut chip thickness is difficult to determine in the case of grinding due to the uncertainty of the grain shapes, sizes and positions. This study presents a new method to simulate the interaction between each grain of the grinding wheel and the workpiece through the evaluation of the uncut chip thickness. Firstly, the real 3D topography of the electroplated diamond grinding wheel is measured using a focus-variation microscope. Then, the uncut chip thickness for each grain is calculated using this tool topography. The results coming from the simulation are used to evaluate forces generated during the grinding process. Finally, the results from the simulation are compared with experimental measurements on SiC material grinding.
碳化硅磨削过程中基于真实三维砂轮形貌的磨削力和表面建模方法
碳化硅(SiC)或硅-碳化硅(Si-SiC)等先进陶瓷在电子、汽车和航空航天领域的应用得到了广泛的发展。这种硬脆材料的磨削在效率、精度和表面完整性方面仍然具有挑战性。磨削过程涉及多个切削刃与随机几何形状的同时相互作用。晶粒接合被用来分析和模拟所产生的力。由于晶粒形状、尺寸和位置的不确定性,在磨削的情况下,难以确定未切削的切屑厚度。本文提出了一种通过评价未切削切屑厚度来模拟砂轮各颗粒与工件相互作用的新方法。首先,利用变焦显微镜对电镀金刚石砂轮的真实三维形貌进行了测量。然后,使用该刀具形貌计算每个晶粒的未切削切屑厚度。仿真结果用于评估磨削过程中产生的力。最后,将仿真结果与SiC材料磨削实验结果进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
3.80
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0.00%
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