ABSTRACT Thermal injuries inflicted during bone drilling significantly affect the success rate of surgery, hence, it is important to control thermal injury through temperature reduction. Low-frequency vibration-assisted drilling (LFVAD) is proposed here to reduce thermal injury to bones. Subsequently, the effectiveness of this process is experimentally verified. Based on the trajectories of the cutting edge in LFVAD, the duty ratio and maximum uncut chip thickness are analyzed by varying the amplitude and feed per tooth. A special fixture is designed and the temperature field is measured using an infrared thermography camera. Furthermore, a verification experiment is performed on the machine tool using a low-frequency vibration tool holder. The maximum temperature rise is used to evaluate the drilling temperature, and a thermal injury factor is proposed to evaluate the size of the thermal injury area. Results show that LFVAD effectively reduced thermal injury during bone drilling. The non-cutting effect during LFVAD interrupted the continuous accumulation of cutting heat and promoted the dissipation of cutting heat. Under the experimental parameters used in this study with LFVAD, the maximum temperature rise reduced up to 29.7% and the thermal injury factor reduced up to 18.3%, as compared to those of conventional drilling.

中文翻译：

---

低频振动辅助骨钻孔减轻热损伤的分析

摘要 骨钻孔过程中造成的热损伤会显着影响手术的成功率，因此通过降低温度来控制热损伤非常重要。这里提出了低频振动辅助钻孔 (LFVAD)，以减少对骨骼的热损伤。随后，通过实验验证了该过程的有效性。基于LFVAD中切削刃的轨迹，通过改变振幅和每齿进给量来分析占空比和最大未切削切屑厚度。设计了一个特殊的夹具，并使用红外热像仪测量温度场。此外，在机床上使用低频振动刀架进行了验证实验。最大温升用于评价钻孔温度，并提出了热损伤因子来评估热损伤区域的大小。结果表明，LFVAD 有效减少了骨钻孔过程中的热损伤。LVAD 过程中的非切削效应中断了切削热的不断积累，促进了切削热的消散。在本研究中使用的 LVAD 实验参数下，与常规钻井相比，最大温升降低了 29.7%，热损伤系数降低了 18.3%。