Modelling of the micro-grinding process considering the grinding tool topography
Modelling of the micro-grinding process considering the grinding tool topography
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DOI：
10.1504/ijat.2017.10010200
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发表时间：
2017
影响因子：
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通讯作者：
M. Kadivar;Ali Zahedi;B. Azarhoushang;P. Krajnik
中科院分区：
文献类型：
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作者：
M. Kadivar;Ali Zahedi;B. Azarhoushang;P. Krajnik
磨削刀具的微观形貌对切削力、温度以及刀具磨损有相当大的影响。本文讨论了基于真实刀具形貌和尖端工件相互作用的运动学建模的微磨削过程的分析建模。从从工具表面拍摄的共焦图像中获得磨料颗粒的大致形状及其分布，从而确定颗粒高度突出和颗粒的概率密度函数。为了确定磨削力，开发了瞬态运动学方法。在这种方法中，在周边侧面磨削操作中，单个磨粒与工件的相互作用扩展到整个切削区域。因此，开发了 5 级钛微磨削中切削力和表面粗糙度的预测模型。最后，通过实验结果验证了模拟力和表面粗糙度。
The micro topography of the grinding tool has a considerable influence on the cutting forces and temperature as well as the tool wear. This paper addresses an analytical modelling of the micro-grinding process based on the real tool topography and kinematic modelling of the cutting-edgeworkpiece interactions. An approximate shape of the abrasive grains and their distribution is obtained from the confocal images, which are taken from the tool surface - determining the grain height protrusion and the probability density function of the grains. To determine the grinding forces, a transient kinematic approach is developed. In this method, the individual grit interaction with the workpiece is extended to the whole cutting zone in the peripheral flank grinding operation. Hence a predictive model of cutting forces and surface roughness in micro grinding of titanium grade 5 is developed. Finally, the simulated forces and surface roughness are validated by the experimental results.