不同频双激励超声振动辅助磨削装置的设计研究
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摘要
在设计出不同频双激励超声振动辅助磨削装置结构的基础上,利用MATLAB仿真的方式,得出不同条件下工件表面质点运动轨迹图,并比较得出在设置两超声振动的相位差为π/2且频率比为ω1∶ω2=3∶5的条件下超声辅助磨削效果达到最佳,此时待磨削工件表面的创成机理将得到很大程度的改善,磨削特性也要优越于传统磨削加工,磨削后工件表面粗糙度更小。
In this paper,based on the design of the ultrasonic vibration auxiliary grinding device with double excitation of different frequency,the motion trajectory of the workpiece surface under different conditions is obtained by use of MATLAB simulation method.The results show that the grinding effect reaches the best when the phase difference of two ultrasonic vibration is controlled to beπ/2 and the frequency ratio is3∶5.At this time,the formation mechanism of the workpiece surface to be grinded will be improved to a great extent,and the grinding characteristics will be superior to the traditional grinding,and the grinding roughness of the workpiece surface is smaller.
In this paper,based on the design of the ultrasonic vibration auxiliary grinding device with double excitation of different frequency,the motion trajectory of the workpiece surface under different conditions is obtained by use of MATLAB simulation method.The results show that the grinding effect reaches the best when the phase difference of two ultrasonic vibration is controlled to beπ/2 and the frequency ratio is3∶5.At this time,the formation mechanism of the workpiece surface to be grinded will be improved to a great extent,and the grinding characteristics will be superior to the traditional grinding,and the grinding roughness of the workpiece surface is smaller.
引文
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[2]黄智高.硬质金属材料高速切削加工探讨[J].科技与企业,2013(10):329.
[3]沈桂兰.超高速磨削加工技术发展及研究[J].价值工程,2012(23):14-15.
[4]肖永军,杨卫平,李尧忠,等.超声磨削加工磨头的研制[J].航空精密制造技术,2017(10):60-62.
[5]肖贵坚,黄云,黄智.超声振动砂带研磨曲轴主轴颈实验研究[J].机械科学与技术,2011(1):92-97.
[6]徐超亮,汤晓华.旋转超声加工技术现状及发展趋势[J].机电产品开发与创新,2013(4):11-12.
[7]邵水军,赵波.纳米陶瓷材料超声振动磨削加工表面质量研究[J].兵器材料科学与工程,2014(2):1-4.
[8]王岩.轴向超声振动辅助磨削加工机理与试验研究[D].天津:天津大学,2015:66.