微铣削切削力的解析模型分析  

Analytical Modeling of Cutting Force in Micro-milling

作　　者：喻春明 汪小军 迟玉红 杨衍帅 王勃[2] YU Chun-ming;WANG Xiao-jun;CHI Yu-hong;YANG Yan-shuai;WANG Bo(College of Mechanical Engineering,Xijing University,Xi′an 710123,China;College of Mechanical Engineering,Xi′an University of Science and Technology ,Xi′an 710054,China)

机构地区：[1]西京学院机械工程学院,西安710123 [2]西安科技大学机械工程学院,西安710054 [3]东北大学机械工程与自动化学院,沈阳110819

出　　处：《组合机床与自动化加工技术》2019年第9期22-26,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家科技重大专项(2017ZX04011010)

摘　　要：针对传统铣削模型不能较好的反映出微铣削刀具因尺寸效应而易受切削力与切削振动的影响效果的问题,建立了微铣削刀具运动轨迹和动态切削厚度模型和考虑刀具磨损的微铣削犁力模型和剪切力模型,通过Deform-2D切削仿真获得了犁力系数和剪切力系数,建立了考虑刀具磨损的微铣削切削力模型。同时通过切削力测试实验与仿真结果进行比对,检验了切削力模型与测试结果的偏差,结果表明该切削力模型预测结果可以较好的反应实际切削力值,可以利用该模型进行微铣削切削力的近似计算,进而验证了模型的正确性与可信度。Aiming at the problem that the traditional milling model can not reflect the effect of cutting force and cutting vibration easily due to the size effect of micro-milling tools,the micro-milling tool trajectory and dynamic cutting thickness model,the micro-milling plough force model and the shearing force model considering tool wear are established,which are obtained by Deform-2D cutting simulation.The milling force coefficient and shear force coefficient are obtained,and the cutting force model of micro milling considering tool wear is established.At the same time,the deviation between the cutting force model and the test result is checked by comparing the cutting force test experiment with the simulation result.The result shows that the prediction result of the cutting force model can better reflect the actual cutting force value.The approximate calculation of the cutting force in micro-milling can be made by using the model,and the correctness of the model is verified.Sex and credibility.

关 键 词：微铣削 犁力 最小切削厚度 切削比能 

分 类 号：TH162[机械工程—机械制造及自动化] TG54[金属学及工艺—金属切削加工及机床]