Influence of Micro-texture Parameters on Bone Drilling Force and Torque: A Finite Element Model

2018 4th International Conference on Mechanical Engineering and Automation Science

机械制造;原子能学

Hu, Yahui^1^2 ; Li, Xiangjun^1 ; Chen, Chuncheng^1 ; Su, Lili^1 ; Zheng, Qingchun^1

Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin

300384, China^1

Tianjin University of Technology, 391 Binshui West Road, Tianjin, Xiqing District

300384, China^2

关键词: Bone drilling;    Cortical bone;    Drilling thrust;    Force and torques;    Micro-structure parameters;    Three dimensional finite element model;    Thrust and torques;    Tool surfaces;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/470/1/012026/pdf
DOI  :  10.1088/1757-899X/470/1/012026

来源: IOP

【 摘 要 】

The micro-texture on the tool surface is an effective way to improve the quality of the drilling. While high-performance micro-texture plays an important role in improving the quality of working surface and prolonging the life of tool. In this study, a three-dimensional finite element model was established to study the relationship between drilling thrust, torque and microstructure parameters (micro-pit depth, micro-pit diameter and micro-pit spacing) during drilling of cortical bone. The model was validated by cortical bone drilling using a micro-structured tool. On basis of this, the thrust and torque prediction models of the micro-texture parameters were obtained. The results indicate that the thrust and torque increased with the increase of micro-pit diameter; while the increase of the micro-pit spacing caused the thrust and torque to decrease. When the depth of the micro-pit increased, the thrust and torque decreased first and then increased, and we found that the effect of micro-pit spacing and micro-pit depth on force and torque is insignificant.