考虑冲洗液机器人骨铣削温度建模及敏感性分析  

Temperature modeling and sensitivity analysis of robot-assisted bone milling considering irrigation fluid

作　　者：周紫琪 柯玮翔 胡钧飞 赵志辉[2] 代煜[1] Zhou Ziqi;Ke Weixiang;Hu Junfei;Zhao Zhihui;Dai Yu(Institute of Robotics and Automatic Information System,Nankai University,Tianjin 300350,China;Affiliated Fourth Central Hospital,Tianjin Medical University,Tianjin 300140,China)

机构地区：[1]南开大学机器人与信息系统化研究所,天津300350 [2]天津医科大学附属第四中心医院,天津300140

出　　处：《仪器仪表学报》2024年第11期300-311,共12页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(62173190);天津市科技计划(21JCYBJC00280)项目资助。

摘　　要：在机器人辅助骨铣削手术中,大量热量的产生容易导致热坏死,通常通过使用冲洗液来降低铣削温度。然而,传统的骨铣削温度研究并未考虑冲洗液的影响。为此,建立了一个综合考虑冲洗液作用的骨铣削温度模型。首先,基于有限元法,构建了球头铣刀铣削皮质骨的温度场模型。然后,通过点热源温度场理论,标定了不同流速下冲洗液的对流换热系数。结果表明,当冲洗液流速分别为31.6、43.3和65μm^(3)/s时,对流换热系数分别为400、800和1100 W/(m^(2)·℃)。最后,采用响应面法分析了各铣削参数对最高铣削温度的影响。分析结果表明,铣削深度对最高温度的影响最大,其次是冲洗液流速、进给速度和铣削角度。该温度模型及分析结果为术前铣削参数选择提供了有价值的参考,有助于减少骨铣削过程中的热坏死风险。In robot-assisted bone milling surgery,the generation of a large amount of heat can easily lead to thermal necrosis.Irrigation fluid is commonly used to reduce the milling temperature.However,traditional research on bone milling temperature has not considered the influence of irrigation fluid.To address this,this study established a bone milling temperature model that comprehensively considers the effect of irrigation fluid.First,based on the finite element method,a temperature field model of cortical bone milling with a ball-end milling cutter was constructed.Then,the convective heat transfer coefficient of the irrigation fluid at different flow rates was calibrated using the point heat source temperature field theory.The results indicate that,at flow rates of 31.6,43.3,and 65μm^(3)/s,the convective heat transfer coefficients are 400,800,and 1100 W/(m^(2)·℃),respectively.Finally,response surface methodology was applied to analyze the effects of various milling parameters on the maximum milling temperature.The analysis revealed that milling depth had the most significant impact on the maximum temperature,followed by irrigation fluid flow rate,feed speed,and milling angle.This temperature model and the accompanying analysis provide valuable reference for selecting preoperative milling parameters and help reduce the risk of thermal necrosis during bone milling.In robot-assisted bone milling surgery,the generation of a large amount of heat can easily lead to thermal necrosis.The irrigation fluid is commonly used to reduce the milling temperature.However,traditional research on bone milling temperature does not consider the influence of irrigation fluid.To address this,this study proposes a bone milling temperature model that comprehensively considers the effect of irrigation fluid.First,based on the finite element method,a temperature field model of cortical bone milling with a ball-end milling cutter is formulated.Then,the convective heat transfer coefficient of the irrigation fluid at different flow rates is c

关 键 词：骨铣削温度 有限元法 热参数识别 响应面法 

分 类 号：TH811[机械工程—仪器科学与技术] TH781[机械工程—精密仪器及机械]