摘要
刀具-切屑接触摩擦特性对切削过程中的力、温度及刀具磨损等均会产生较大的影响。针对此,建立刀-屑接触摩擦因数与接触面正应力和相对温度之间的经验模型。采用HT-1000多功能球-盘摩擦磨损试验机,进行硬质合金球(模拟刀具)和Ti6Al4V(模拟工件)的摩擦试验,通过试验数据建立并验证了考虑接触应力和切削温度的摩擦因数模型。以此为基础,基于斜角切削理论构建变摩擦因数的立铣刀铣削力模型。通过与钛合金铣削实验测的铣削力值进行对比验证,得出所建立的变摩擦因数的铣削力模型的准确性。
The friction characteristics between the tool and the chip will affect the cutting force,cutting heat and tool wear in the milling.Aiming at the above mentioned,an empirical model between the normal stress and the relative temperature to describe the tool-chip friction coefficient is established.The HT-1000 multifunctional ball-disk friction and wear tester was used to simulate the friction process among the cemented carbide tools and Ti6Al4V parts,and the friction coefficient model by considering contact stress and cutting temperature was established and verified through the testing data.With the present friction coefficient model,the model for milling force is constructed based on the oblique cutting theory,which can be further verified via the milling experiment of titanium alloy.
作者
谢娜
岳彩旭
李晓晨
刘献礼
郝小乐
Steven Y LIANG
XIE Na;YUE Caixu;LI Xiaochen;LIU Xianli;HAO Xiaole;Steven Y LIANG(Key Laboratory of Advanced Manufacturing and Intelligent Technology,Harbin University of Science and Technology,Harbin 150080,China;The George W.Woodruff School of Mechanical Engineering,Georgia Institute of Technology,Atlanta 30332,America)
出处
《机械科学与技术》
CSCD
北大核心
2022年第6期821-826,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
国家重点研发计划项目(2018YFB2002201)。
关键词
刀-屑接触
摩擦因数
接触应力
温度
铣削过程
tool-chip contact
friction coefficient
contact stress
temperature
milling
