超声振动辅助微细铣削加工尺寸精度实验  

Effects of the Ultrasonic Vibration on Dimensional Accuracy in Micro Milling

作　　者：沈学会[1,2] 张建华[1] 邢栋梁[1] 董春杰[1] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东轻工业学院机械工程学院,济南250353

出　　处：《农业机械学报》2011年第3期229-233,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50875157);高等学校博士点专项科研基金资助项目(20090131110031)

摘　　要：实验研究了利用进给方向超声振动辅助微细铣削对零件加工尺寸精度的影响。以2A12为实验工件材料,利用一个超声振子带动工件沿进给方向振动进行铣槽实验,加工后对槽宽进行了精确测量。通过单因素实验分析了施加超声振动前后加工槽宽的变化,结果表明超声振动有助于减小加工尺寸偏差,而大的振幅更有利于提高加工尺寸精度;基于日本田口方法,通过全因子实验考察了主轴转速、每齿进给量、振幅对加工尺寸偏差的影响并进行了加工参数优化。The purpose is to investigate the effects of the ultrasonic vibration on dimensional accuracy in micro milling process.Several slot-milling experiments were conducted with aluminium alloy as the workpiece material.The desired vibration was proposed from the workpiece side by an ultrasonic vibrator.The width of slot produced by end milling was precisely measured.A one-factor experiment was conducted at first to analyze the variation of slot width before and after ultrasonic vibration was applied,and the experimental results indicated that ultrasonic vibration made contribution to the decrease of size deviation and larger amplitude tends to reduce the slot width oversize.A full-factor experiment was carried out accordingly based on Taguchi method to optimize the parameters involving spindle speed,feed per tooth and vibrating amplitude.

关 键 词：超声振动 微加工 铣削 尺寸精度 田口方法 

分 类 号：TH161.1[机械工程—机械制造及自动化] TG506.5[金属学及工艺—金属切削加工及机床]