Bone drilling is a well-known process in operative fracture treatment and reconstructive surgery. The cutting ability of the drill is lost when used for multiple times. In this study, the effect of different levels of drill wear on bone temperature, drilling force, torque, delamination around the drilling region and surface roughness of the hole was investigated using a series of experiments. Experimental results demonstrated that the wear of the drill is strongly related to the drilling force, torque, temperature and surface roughness of the drilled hole. Statistical analysis was performed to find the effect of various factors on multiple response variables in the bone drilling process. The favorable conditions for bone drilling are obtained when feed rate, drill speed and the roughness of the cutting edge of the drill were fixed at 30 mm, 2000 rpm and up to 2 mm, respectively. Further, analysis of variance (ANOVA) was performed to determine the factor with a significant impact on the response variables. F-test and p-value indicated that the feed rate had the highest effect on grey relational grade followed by the roughness of the drill. This study suggests that the sharp drill along with controlled drilling speed and feed rate may be used for safe and efficient surgical drilling in bone.

中文翻译：

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钻头质量对骨钻性能影响的实验研究

骨钻孔是手术性骨折治疗和重建手术中众所周知的过程。多次使用时，钻头的切削能力丧失。在这项研究中，通过一系列实验研究了不同程度的钻头磨损对骨温度、钻孔力、扭矩、钻孔区域周围分层和孔表面粗糙度的影响。实验结果表明，钻头的磨损与钻孔的钻孔力、扭矩、温度和表面粗糙度密切相关。进行统计分析以发现各种因素对骨钻孔过程中多个响应变量的影响。当进给速度、钻速和钻头切削刃的粗糙度固定为30 mm时，获得了骨钻的有利条件，分别为 2000 rpm 和高达 2 mm。此外，进行方差分析 (ANOVA) 以确定对响应变量有显着影响的因素。F 检验和 p 值表明进给速率对灰色相关等级的影响最大，其次是钻头的粗糙度。这项研究表明，锋利的钻头以及受控的钻孔速度和进给速率可用于安全有效的骨外科钻孔。