三维超声振动辅助铣磨氧化锆陶瓷的试验研究  

Experimental Study on Three-dimensional Ultrasonic Vibration Assisted Grinding of Zirconia Ceramics

作　　者：沈剑云[1] 林少龙 程家威 吴贤 朱来发 SHEN Jianyun;LIN Shaolong;CHENG Jiawei;WU Xian;ZHU Laifa(College of Mechanical Engineering and Automation,Huaqiao University,Xiamen 361021,China)

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021

出　　处：《湖南大学学报（自然科学版）》2024年第4期27-34,共8页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51905182)。

摘　　要：分析了三维超声振动辅助铣磨(Ultrasonic Vibration Assisted Grinding,UAG)中单颗磨粒的运动学,采用自主搭建的三维超声振动辅助铣磨加工系统,对氧化锆陶瓷进行超声振动辅助铣磨加工试验.在不同超声辅助条件下,对比铣磨氧化锆陶瓷的法向铣磨力、表面粗糙度和工件表面形貌,研究不同加工参数对三维UAG加工过程的影响规律以及三维超声对铣磨过程的影响.研究结果表明,铣磨氧化锆陶瓷时,法向铣磨力随超声辅助加工维度的增加而减小,三维UAG加工可有效降低其铣磨负荷,且加工参数对法向铣磨力降低幅度的影响最小;法向铣磨力降低幅度随进给速度与切削深度的增大而减小,随主轴转速的增大而增大.氧化锆陶瓷工件的表面粗糙度随超声辅助加工维度的增加而降低,表面形貌逐渐呈现更多的塑性划痕,加工参数对三维UAG加工表面粗糙度的影响最小.由此可见,三维UAG加工中,单颗磨粒切削轨迹长度的增大有利于其切削厚度减小,从而降低铣磨力并改善加工表面质量.The kinematics of a single abrasive particle in three-dimensional Ultrasonic Vibration Assisted Grinding(UAG)was analyzed.The ultrasonic vibration assisted grinding experiment of zirconia ceramics was carried out with the self-built three-dimensional UAG system.By comparing the normal grinding force,surface roughness,and surface morphology of zirconia ceramics under different ultrasonic-assisted conditions,the influence of different processing parameters on the three-dimensional UAG process and the influence of three-dimensional ultrasound on the grinding process were studied.The experimental results show that the normal grinding force of zirconia ceramics decreases with the increase of ultrasonic assisted machining dimension.Three-dimensional UAG machining can effectively reduce the grinding load,and the influence of machining parameters on the reduction of normal grinding force is the smallest.The reduction of normal grinding force decreases with the increase of feed speed and cutting depth and increases with the increase of spindle speed.The surface roughness of zirconia ceramic workpieces decreases with the increase of ultrasonic assisted processing dimension,and the surface morphology gradually shows more plastic scratches.The influence of processing parameters on the surface roughness of three-dimensional UAG grinding is also the smallest.It can be seen that the increase of the cutting trajectory length of the single abrasive particle in the three-dimensional UAG machining is beneficial to the decrease of the cutting thickness,thus reducing the grinding force and improving the surface quality.

关 键 词：超声振动辅助铣磨 氧化锆陶瓷 铣磨力 表面粗糙度 

分 类 号：TH161[机械工程—机械制造及自动化]