Characteristics of ultrasonic vibration transmission in bonding process

The transmitting models of ultrasonic vibration in ultrasonic transducer and capillary were presented according to the propagating mechanism of ultrasonic wave in elastic body. The coupling characteristics of ultrasonic longitudinal-complex transverse vibration system were simulated by Matlab software. The ultrasonic vibration displacement and the velocity of high frequency were measured by using the PSV-400-M2(1.5MHz) laser Doppler vibrometer. The vibration locus shapes driven by the same frequency and different frequencies were tested by using GDS-820S dual channel digital oscilloscope. The microstructures at bonding interface were observed by means of KYKY2800 scanning electron microscope. The results show that ultrasonic vibration displacement or velocity and energy density increase with the decrease of section area in the transmitting process. The vibration locus shapes driven simultaneously by the same frequency and different frequencies are elliptical (or circular) loci and rectangular (or square) loci, respectively. And the characteristics at bonding interface are improved by coupling loci.

引线键合机中复杂超声能量传递特性研究

目前,引线键合主要是采用热超声键合技术。超声振动传播和能量传递是超声键合设备中一个非常关键和复杂的问题。本文利用波在弹性体中传播机理,给出超声聚能杆和劈刀的振动传递的特性,利用多普勒振动计PSV-300-F(1.5MHz)测量了振动位移和速度,证实理论结论,并对双向垂直传输超声能焊具的性能进行了研究,阐明了垂直双向加载是一种高效的传能模型。

引线键合中多向超声能量传输特性研究

利用波在弹性体中传播机理,给出超声聚能杆和劈刀的振动传递的特性,利用多普勒振动计PSV-300-F(1.5MHz)测量了振动位移和速度,证实理论结论,并对双向垂直传输超声能焊具的性能进行了研究,阐明了垂直双向加载是一种高效的传能模型。这些将对优化设计超声振动系统、提高超声键合能量传递效率和进一步研究整个超声振动系统的能量传递性能有重要意义。

引线键合中多向超声波能量传输特性研究

引线键合主要是采用超声波热键合技术,而超声波振动传播和能量传递是超声波键合设备中一个非常关键和复杂的问题。利用波在弹性体中传播的机理,给出超声波聚能杆和劈刀的振动传递特性,利用多普勒振动计PSV-300-F(1.5MHz)测量了振动位移和速度,证实了理论分析结果,并对双向垂直传输超声波能焊具的性能进行了研究,阐明垂直双向加载是一种高效的传能模型。