大直径轮式结晶器超声滚压变幅装置的设计  

Design of Transformer Device in Ultrasonic Burnishing for Large-Diameter Wheel Crystallizer

作　　者：王栋[1] 韩变枝[1] 石良生 

机构地区：[1]太原理工大学阳泉学院,山西阳泉045000 [2]阳泉铝业股份有限公司,山西阳泉045002

出　　处：《组合机床与自动化加工技术》2015年第6期121-124,129,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：山西省教育厅科技研究开发项目(20141116)

摘　　要：普通滚压结合超声振动的复合加工是表面强化技术研究和应用发展的主要方向。超声振动可以有效减小滚压力和变形,提高强化效果和增大残余压应力。针对轮式结晶器的滚压技术要求,滚压装置的设计采用分离型超声椭圆振动系统,并选用圆锥形变幅杆。设计时,依据滚压轮和变幅杆各自的动力学特点以及联接处的边界条件来建立数学模型,求解设计参数并设计变幅器。经验设计的计算结果与之比较误差较大,主要是滚压轮的谐振频率误差过大。因此,将滚压轮和变幅杆整体设计的方法是有效的。运用有限元分析法进行验证并修正,设计结果与试验结果一致,提高了变幅装置的设计质量。The combined machining of the common rolling and ultrasonic vibration is the main direction of research and application development in the surface strengthening technology. Ultrasonic vibration can effectively reduce the rolling compressive stress and deformation,improve the strengthening effect and increase the residual compressive stress. According to the rolling technology requirements of w heel crystallizer,the separation type ultrasonic elliptical vibration system is used in the design of rolling device,and cone-shaped horn is adopted. The mathematical models are based on the respectively dynamic characteristics of the rolling w heel and the horn,including the boundary conditions on the connected surface. The solution of design parameters is obtained. The transformer is designed. By comparing the natural frequency,the large error of the calculation results in the empirical design is found,the mainly reasons is the larger error of resonance frequency on rolling w heel. Therefore,the w hole design method of the rolling w heel and the horn is effective.It is verified and revised by the finite element analysis method. The design results are consistent w ith the experimental results. The design quality of the amplitude transformer device is improved.

关 键 词：超声滚压 结晶器 变幅器设计 有限元分析 

分 类 号：TH122[机械工程—机械设计及理论] TG65[金属学及工艺—金属切削加工及机床]