砖块打包机摩擦焊接臂的振动特性分析  

Analysis of Vibration Characteristics of Friction Welding Arm in Brick Packaging Machine

作　　者：张景亮 邓海顺[1] 陈然 ZHANG Jingiang;DENG Haishun;CHEN Ran(School of Mechanical Engineering,Anhui University of Science and Technology,Anhui Huainan 232001,China)

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《包装工程》2024年第5期205-211,共7页Packaging Engineering

基　　金：安徽省教育厅优秀科研创新团队-矿山智能技术与装备科研创新团队(2022AH010052);安徽省学术与技术带头人资助项目(2021D308)。

摘　　要：目的减小共振疲劳对摩擦焊接机构的影响,提高砖块打包机的可靠性、性能及使用寿命。方法建立摩擦焊接机构模型,分析不同振动频率下的摩擦振动臂位移振幅与应力振幅。以理想焊接温度为基础,焊接时间为参数,确定振动频率与马达转速。结果在所测试的频率范围内,随着振动频率不断增加,Z方向位移振幅较大于X、Y方向,Y方向应力振幅较大于X、Z方向,3个方向位移振幅与应力振幅均呈上升趋势。振动频率为440 Hz时,焊接时间至少需要2.0 s;振动频率为450 Hz和460 Hz时,焊接时间至少需要1.9 s。摩擦振动臂底端温度分布基本一致且均达到理想焊接温度,最终选取振动频率为450Hz,马达转速设定为27000 r/min。结论最终确定的转速不仅需要满足共振疲劳影响最小化,还需结合砖块打包机实际焊接温度及效率因素,以此提高砖块打包机的可靠性与使用寿命。The work aims to reduce the impact of resonance fatigue on friction welding mechanisms and improve the reliability,performance,and service life of brick packaging machine.A friction welding mechanism model was established to analyze the displacement amplitude and stress amplitude of the friction vibration arm under different vibration frequencies.Based on the ideal welding temperature and welding time as parameters,the vibration frequency and motor speed were determined.Within the tested frequency range,as the vibration frequency increased,the displacement amplitude in the Z direction was greater than that in the X and Y directions,and the stress amplitude in the Y direction was greater than that in the X and Z directions.The displacement amplitude and stress amplitude in all three directions showed an upward trend.When the vibration frequency was 440 Hz,the welding time was at least 2.0 s,and when the vibration frequencies were 450 Hz and 460 Hz,the welding time was at least 1.9 s.The temperature distribution at the bottom of the friction vibration arm was basically consistent and reached the ideal welding temperature.Finally,the vibration frequency was selected as 450 Hz,and the motor speed was set to 27000 r/min.The final determined speed not only needs to minimize the impact of resonance fatigue,but also needs to be combined with the actual welding temperature and efficiency factors of the brick packaging machine,in order to improve the reliability and service life of the brick packaging machine.

关 键 词：摩擦焊接 振动 温度场 频率 转速 

分 类 号：TB486[一般工业技术—包装工程] TG404[金属学及工艺—焊接]