基于等效车削力及斜角切削力模型的铣削力建模  

MILLING FORCE MODELING BASED ON EQUIVALENT TURNING FORCE AND OBLIQUE CUTTING FORCE MODEL

作　　者：武明洲 张广鹏[1] 刘墨涵[2] 苟建峰 张鹏[2] WU MingZhou;ZHANG GuangPeng;LIU MoHan;GOU JianFeng;ZHANG Peng(School of Mechanical and Precision Instrument Engineering,Xi′an University of Technology,Xi′an 710048,China;Sichuan Engineering Technical College,Deyang 618000,China)

机构地区：[1]西安理工大学机械与精密仪器工程学院,西安710048 [2]四川工程职业技术学院,德阳618000

出　　处：《机械强度》2023年第4期909-916,共8页Journal of Mechanical Strength

基　　金：德阳市科技局科技计划项目(2017ZZ052)资助。

摘　　要：传统铣削力预测模型精度低,难以为实际生产中工艺参数的合理选择提供有效支持,建立了一种基于等效车削力模型的铣削力模型,通过综合考虑工作角度、刃口圆弧及刀尖圆弧半径的等效车削力模型。该模型将实际车刀等效为理想车刀模型识别出材料本构方程中的材料常数、流屑角及平均摩擦角,再根据斜角切削模型计算不同切削速度下的主剪切面上的剪切应力及单位切削力F0向量,从而可以计算出立铣刀前刀面上的瞬时切削力,再经过坐标变换得立铣刀在X-Y-Z坐标系下的三向切削力,仿真及实验验证了该铣削力模型的预测性。The accuracy of traditional milling force prediction model is low,and it is difficult to provide effective support for the reasonable selection of process parameters in practical production,by synthetically considering the equivalent turning force model of working angle,cutting edge arc and radius of tool tip arc,in this model,the actual turning tool is equivalent to the ideal turning tool model to identify the material constant,the chip flow angle and the average friction angle in the material constitutive equation,according to the oblique cutting model,the shear stress on the main shear plane and the F0 vector of the unit cutting force at different cutting speeds are calculated,thus the instantaneous cutting force on the front face of the end mill can be calculated,the three-dimensional cutting force of end mill in X-Y-Z coordinate system is obtained by coordinate transformation.The prediction of the cutting force model is verified by simulation and experiment.

关 键 词：等效模型 单位切削力 铣削力预测 

分 类 号：TG156[金属学及工艺—热处理]