摘要
切削振动是切削加工中的一种伴随现象,由于具有刀具直径小、切削速度高等特性,微细立铣削的切削振动对其加工质量和加工效率有着显著的影响。基于45钢微细立铣削单因素和正交组合试验,分析了直槽铣削时铣削参数对振动加速度影响的基本规律,建立了铣削参数与振动加速度之间的关系模型。研究结果表明:直槽立铣削时,槽宽方向的振动加速度aY总大于进刀方向的振动加速度aX;振动加速度随铣削参数的增加呈上升趋势,其中切削速度是振动加速度的主要影响因素;基于关系模型的振动加速度预测结果与试验结果具有较高的吻合度,可以用来进行振动加速度的预测预报。
Cutting vibration is a common phenomenon in cutting machining. Because of small tool diameter and high main shaft speed of micro end milling, cutting vibration has a remarkable effect on surface quality and machining effwiency. In order to reveal the change rule of vibration acceleration during micro end milling straight groove, the single-factor and orthogonal experiments were employed to confirm the influence of milling parameters on vibration acceleration. On these bases, the relation equations between milling parameters and vibration accelerations are built. The result shows that the vibration acceleration along the width of groove is bigger than that of feed direction; the cutting speed is the main influence factor of vibration acceleration, and it will increase rapidly with the improve of cutting speed; the predicted results of vibration acceleration are in good accordance with test results, therefore the relation equations can be used to predict vibration acceleration.
出处
《机械设计与制造》
北大核心
2014年第6期123-125,共3页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(50935001)
河南省青年骨干教师资助项目(2011GGJS-130)
关键词
微细立铣削
铣削参数
切削振动
振动加速度
Micro End Milling
Milling Parameter
Cutting Vibration
Vibration Acceleration
