工艺参数对钛合金超声振动铣削表面显微硬度的影响  

Influence of Process Parameters on Microhardness of Machined Surface in Ultrasonic Vibration Milling of Titanium Alloy

作　　者：武民 马利杰[2] 王占奎[2] 苏建修[2] Wu Min;Ma Lijie;Wang Zhankui;Su Jianxiu(Xinke College,Henan Institute of Science and Techology,He'nan Xinxiang 453003,China;School of Mechanical and Electrical Engineering,Henan Institute of Science and Techology,He'nan Xinxiang 453003,China)

机构地区：[1]河南科技学院新科学院,河南新乡453003 [2]河南科技学院机电学院,河南新乡453003

出　　处：《机械科学与技术》2020年第10期1587-1592,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：河南省高等学校重点科研项目(17A460014)资助。

摘　　要：超声振动铣削是一种公认的先进切削技术,在难加工材料铣削方面具有独特的优势。然而超声振动铣削优势的发挥程度与工艺参数的选择密切相关。表面显微硬度是零件表面质量的重要衡量指标,直接影响到零件的耐磨性和使用性能。为了充分揭示超声振动铣削的工艺参数对表面显微硬度的影响规律,本文通过给工件施加超声振动的方式,开展了不同振动方向下的TC4钛合金超声振动侧铣平面试验,分析了振动方向、振幅、铣削参数对加工表面显微硬度的影响规律。结果表明:法向振动铣削得到的工件表面显微硬度大于切向和轴向振动;随着主轴转速的增加3个振动方向铣削后的表面显微硬度都呈现出上升的趋势。Ultrasonic vibration milling is an acknowledgedadvanced cutting technology,which has unique advantages formachining the difficult-to-cutting materials.However,the superiority of ultrasonic vibration milling is closely related to the process parameters.The microhardness is an important index of machined quality which influences directly the wear resistance and service performance of workpieces.In order to reveal the influence of the process parameters on the vibration milling effect,the test of ultrasonic vibration side milling of TC4 titanium alloy with different vibration action directions was carried out by applying vibration to the workpiece,and the relations of the vibration action directions,amplitude and milling parameters with the microhardness of the machined surface was analyzed.The results show that the microhardness under three vibration directions all increase with the increasing of spindle speed,and the normal ultrasonic vibration milling can achieve higher microhardness than the axial vibration milling and the tangential vibration milling.

关 键 词：超声振动铣削 钛合金 振动方向 加工表面 显微硬度 

分 类 号：TG506.5[金属学及工艺—金属切削加工及机床]