公开(公告)号：US3693158A

公开(公告)日：1972-09-19

申请号：US3693158D

申请日：1970-04-01

Applicant: UTHE TECHNOLOGY

Inventor： UTHE PAUL M

IPC: B23K20/10 ,  G01N29/22 ,  G01N29/34 ,  G01N29/36 ,  H04Q1/20

CPC classification number: B23K20/10 ,  G01N29/22 ,  G01N29/34 ,  G01N29/36 ,  G01N2291/2672 ,  H01L2224/78

Abstract: A method and apparatus for monitoring parameters indicating the quality of an ultrasonic weld process. A signal that is the function of the transducer and load impedance is first operated on by taking its logarithm. That signal is differentiated to provide a signal indicative of the smoothness of the machine movement; the negative portion of the machine signal is looked at during a selected time frame to detect the weld. The logarithm of the impedance signal is also integrated to provide a signal indicating the cleanness of the weld. The transducer voltage or current can also be monitored to assure that the desired amplitude is applied over an optimum time period.

Abstract translation: 一种用于监测指示超声波焊接过程的质量的参数的方法和装置。 传感器和负载阻抗函数的信号首先通过取其对数运算。 该信号被区分以提供指示机器运动的平滑度的信号; 在选定的时间范围内查看机器信号的负部分以检测焊缝。 阻抗信号的对数也被积分以提供表示焊缝清洁度的信号。 还可以监测传感器电压或电流，以确保在最佳时间段内施加期望的幅度。