基于异形砂轮的超声加工系统设计研究  

Design of an ultrasonic machining system based on a special grinding wheel

作　　者：唐军[1] 赵波[2] TANG Jun;ZHAO Bo(Department of Mechanical and Electrical Engineering,Xinxiang University,Xinxiang 453003,China;School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]新乡学院机电工程学院,河南新乡453003 [2]河南理工大学机械与动力工程学院,河南焦作454000

出　　处：《振动与冲击》2018年第18期132-137,共6页Journal of Vibration and Shock

基　　金：国家"863"计划资助项目(2013AA040103);河南省高等学校重点科研项目(18A460029)

摘　　要：针对超声辅助磨削碳纤维复合材料不仅可以保证砂轮的自锐性,而且可以抑制碳纤维复合材料缺陷的产生。研究适应超声速推进器中异形、深腔燃烧室构件的超声加工系统;基于一维振动理论和薄板振动理论,分别建立了多段式变幅杆和异形砂轮的频率方程,并在此基础上应用MATLAB 7. 1软件进行数值计算获得了带有异形砂轮的多段式变幅杆;之后,对设计出超声振动系统分别进行有限元分析和固有频率测试,结果表明二者相对设计频率的误差在1. 4%以内。通过对研制的超声加工系统对碳纤维复合材料构件进行切削试验,获得了较好的加工效果。In the process of the ultrasonic assisted grinding of carbon fiber composites,the self-sharpening of the grinding wheel can be guaranteed,and the producing of defects of the carbon fiber composites can be suppressed.Therefore,an ultrasonic machining system,suitable for machining the special-shaped and deep cavity combustion chambers of a supersonic propeller,was investigated.Based on the one-dimensional vibration theory and the thin plate vibration theory,the frequency equations for a muti-section horn and a special grinding wheel were established,and the ultrasonic machining system with the special grinding wheel was created by using the software MATLAB 7.1.Then,the finite element analysis and natural frequency test of the designed ultrasonic machining system were carried out,and the results show that the frequency error between the analysis and test results is less than 1.4%.An example workpiece made of carbon-fiber composite was processed with the designed ultrasonic assisted grinding system,and better machining results were obtained.

关 键 词：超声加工 异形砂轮 碳纤维复合材料 有限元分析 

分 类 号：TH113.1[机械工程—机械设计及理论] TB559[理学—物理]