This study investigates neurosurgical bone grinding with varying parameters on skull bone using a miniature grinding burr. Three process parameters, namely, rotational speed, feed rate, and depth of cut, have been investigated at three different levels in the terms of tangential force, thrust force, and torque generated during grinding. The results revealed that as the rotational speed is increased, the cutting forces and torque showed a decreasing trend. Nevertheless, the increase in feed rate and depth of cut leads to the escalation in response characteristics. The best parametric combination for minimum cutting forces and torque is as follows: rotational speed = 55,000 r/min, feed rate = 20 mm/min, and depth of cut = 0.50 mm. Morphological analysis reveals cracks in the bone's surface at a higher feed rate. Furthermore, delamination and cutting streaks are also visible on the surface of the bone after grinding. Energy-dispersive spectroscopy and elemental mapping of the tool after bone grinding indicate the accumulation of the bone chips in the successive diamond abrasives. The outcomes of the study will be beneficial for the neurosurgeons in understanding the effect of various process parameters on cutting force, toque, microcracks, and bone's regeneration ability during surgical bone grinding.

中文翻译：

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在颅骨磨削过程中对加工力，扭矩和骨骼质量进行体内评估。

这项研究调查了使用微型磨削毛刺对颅骨进行不同参数的神经外科骨磨削。在切向力，推力和磨削过程中产生的扭矩方面，已经在三个不同的水平上研究了三个工艺参数，即转速，进给速度和切削深度。结果表明，随着转速的增加，切削力和转矩呈下降趋势。然而，进给速度和切削深度的增加导致响应特性的提高。最小切削力和最小扭矩的最佳参数组合如下：转速= 55,000 r / min，进给速度= 20 mm / min，切削深度= 0.50 mm。形态分析表明，进给速度较高时，骨头表面会出现裂纹。此外，研磨后，在骨表面上也可以看到分层和切割条纹。骨研磨后工具的能量色散光谱法和元素图谱表明，连续的金刚石磨料中骨屑的积累。这项研究的结果将有助于神经外科医师了解各种过程参数对外科骨磨削过程中切削力，扭矩，微裂纹和骨骼再生能力的影响。