医用球头铣刀铣削力模型与实验验证  

Milling Force Modeling for Medical Spherical Bone Burr and Experimental Verification

作　　者：罗嘉琪 隋建波 王成勇[1] Luo Jiaqi;Sui Jianbo;Wang Chengyong(Guangdong Provincial Key Laboratory of Minimally Invasive Surgical Instruments and Manufacturing Technology,Guangdong University of Technology,Guangzhou 510006,China;不详)

机构地区：[1]广东工业大学广东省微创手术器械设计与精密制造重点实验室,广州市510006

出　　处：《工具技术》2023年第2期20-26,共7页Tool Engineering

基　　金：国家自然科学基金面上项目(52175386);国家自然科学基金青年科学基金(51805091);广东省自然科学基金基础与应用基础研究(2018A030313713)。

摘　　要：在骨科手术中经常使用球头铣刀对骨材料进行加工,在此过程中铣削力大小的精准控制是改善手术质量的关键,但目前尚缺乏理论模型预测骨材料加工过程中的铣削力。本文将球头铣刀离散成沿切削刃分布的切削微元,并用球头铣刀的结构参数表达切削微元的位置。通过分析切削微元的铣削力模型最终积分得到整个球头铣刀的铣削力模型,并以人工骨为铣削材料设计了三个不同工艺参数的实验来验证模型预测值的准确性。结果表明,该模型能较准确地预测球头铣刀在不同工艺参数下的铣削力。Medical spherical bone burr is often used in orthopedic surgeries for bone machining.The precise control of the milling force during the burring operation is the key to improving the quality of the operation.The current research still lacks theoretical models to predict the milling forces during bone burring process.In this paper,the medical spherical bone burr is discretized into a series of cutting micro-elements distributed along the cutting edge,and the position of each cutting micro-element is expressed by the geometrical parameters of the spherical bone burr.By analyzing the cutting force model of the cutting micro-element and intergration of all elemental forces,the milling force model of the entire burr is obtained.Finally,the artificial bone material is used as the milling material and three experiments with different process parameters are designed to verify the accuracy of the proposed model.The results show that the model can accurately predict the milling force of the spherical bone burr under different process parameters.

关 键 词：球头铣刀 数学模型 铣削力 铣削系数 

分 类 号：TG714[金属学及工艺—刀具与模具] TG501.3