Key Laboratory of Efficient and Clean Machinery Manufacturing of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan, China; National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan, China.
Key Laboratory of Efficient and Clean Machinery Manufacturing of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan, China; National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan, China.
Med Eng Phys. 2022 May;103:103791. doi: 10.1016/j.medengphy.2022.103791. Epub 2022 Mar 18.
In orthopedics and surgery, bone drilling is an important operation for inserting screws and fixing prostheses. A nonnegligible problem which can affect post-operative recovery is the thermal necrosis. For this problem, the method of low-frequency vibration-assisted drilling (LFVAD) was applied in the process of bone drilling in this paper. The influences of parameters (feed rate, rotational speed, vibration frequency and amplitude) on the cutting performances (cutting temperature and chip morphology) were investigated. The results indicate that LFVAD can produce lower temperature compared with conventional drilling (CD). In LFVAD, rotational speed and vibration amplitude are more important parameters on the drilling temperature and chip morphology compared to feed rate and vibration frequency. In addition, according to the trajectories of the cutting edge of drill bit, a mathematical model of heat generation and dissipation was developed in LFVAD.
在矫形和外科手术中，骨钻削是插入螺钉和固定假体的重要手术。一个不可忽视的问题，可能会影响术后恢复，是热坏死。针对这个问题，本文在骨钻削过程中应用了低频振动辅助钻削（LFVAD）方法。研究了参数（进给速度、转速、振动频率和振幅）对切削性能（切削温度和切屑形貌）的影响。结果表明，与常规钻削（CD）相比，LFVAD 可产生更低的温度。在 LFVAD 中，与进给速度和振动频率相比，转速和振动幅度对钻削温度和切屑形貌更为重要。此外，根据钻头切削刃的轨迹，建立了 LFVAD 中的热产生和耗散的数学模型。
