超声振动辅助铝合金板冲裁研究  

Research on ultrasonic vibration assisted blanking of aluminum alloy sheet

作　　者：曹秒艳[1,2] 田少杰 胡晗 赵长财 苑亚宁[3] CAO Miao-yan;TIAN Shao-jie;HU Han;ZHAO Chang-cai;YUAN Ya-ning(School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;Hebei Light structural Equipment Design and Manufacturing Technology Innovation Center,Qinhuangdao 066004,China;Key Laboratory of Advanced Forging&Stamping Technology and Science,Ministry of Education of China,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]河北省轻质结构装备设计与制备工艺技术创新中心,河北秦皇岛066004 [3]燕山大学先进锻压成形技术与科学教育部重点实验室,河北秦皇岛066004

出　　处：《塑性工程学报》2020年第3期1-9,共9页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51775480,51605420);河北省自然科学基金资助项目(E2018203143)。

摘　　要：为了探究振幅和冲裁间隙对冲裁结果的协同作用规律,以6061铝合金板材为研究对象开展超声振动辅助冲裁试验(振动频率为20 k Hz)。超声振动辅助摩擦试验结果表明:超声振动的介入使得摩擦系数显著降低,且在低振幅条件下超声振动对于摩擦系数的影响更为明显。超声振动辅助拉伸试验表明:材料在施加超声振动后,流动应力立即下降,表现为明显的"软化"现象。在Deform-2D超声振动辅助冲裁模拟中将超声振动辅助摩擦试验和超声振动辅助拉伸试验获得的摩擦系数和流动应力随振幅的变化规律赋予板材,间接模拟超声振动对6061铝合金板材冲裁的影响规律。最后结合超声振动辅助冲裁试验得出结论:在不同冲裁间隙下,加入超声振动后,冲裁力的降低程度不同。超声振动幅参数对6061铝合金板材冲裁的影响非常显著;合理的超声振动冲裁参数既能减小冲裁力,又能提高冲裁断面质量。To find out the synergy law of amplitude and blanking clearance on blanking results,the ultrasonic vibration assisted(vibration frequency of 20 kHz)blanking test of 6061 aluminum alloy sheet was carried out.The results of ultrasonic vibration assisted friction test show that the friction coefficient is significantly reduced by applying ultrasonic vibration and the effect of ultrasonic vibration on the friction coefficient is more obvious under low amplitude.The results of ultrasonic vibration assisted tensile test show that the flow stress decreases immediately after applying the ultrasonic vibration,which shows the phenomenon of’softening’.In the Deform-2 D ultrasonic vibration assisted blanking simulation,the laws of friction coefficient and flow stress obtained from ultrasonic vibration assisted friction and tensile tests were applied to the sheet to indirectly simulate the influence law of ultrasonic vibration on the blanking of 6061 duminum alloy sheet.Finally,the conclusion is drawn combining ultrasonic vibration assisted blanking experiment:ultrasonic vibration has different ability to reduce the blanking force under different blanking clearances.The amplitude parameter of ultrasonic vibration has a significant effect on the blanking of 6061 aluminum alloy sheet.Reasonable ultrasonic vibration blanking parameters can reduce the blanking force and improve the quality of blanking cross section.

关 键 词：冲裁 超声振动 6061铝合金 表面效应 体积效应 

分 类 号：TG156[金属学及工艺—热处理]