Ultrasonic phased array detection device and method for automobile third-generation hub bearing outer ring

Abstract

The present invention provides an ultrasonic phased array detection device and method for an automobile third-generation hub bearing outer ring, a phased array probe is arranged on the side wall of the hub bearing outer ring, and a six-degree-of-freedom mechanical arm with the probe is used for conducting ultrasonic phased array detection on the hub bearing outer ring along the section of the hub bearing outer ring, and a phased array probe array element self-transmitting and self-receiving mode is adopted to obtain a reflection echo signal of the hub bearing outer ring defect and transmit the reflection echo signal to a computer. Computer writing software carries out data storage and signal processing on the received reflection echo signals, and finally, a frequency domain synthetic aperture focusing imaging algorithm is used for carrying out defect imaging on the hub bearing outer ring. According to the method, a water immersion ultrasonic phased array detection method is adopted, and the problems are solved that ultrasonic scattering of a small-angle, small-size, thin-wall and complex curved surface of the hub bearing is serious, and the defect detection blind area is large, and the defect detection capability of the hub bearing is improved.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic nondestructive testing, and in particular relates to an ultrasonic phased array testing method for the outer ring of a three-generation wheel hub bearing of an automobile. Background technique [0002] The main function of the hub bearing is to bear weight and provide precise guidance for the rotation of the hub. It bears both axial load and radial load, and is a very important component. [0003] Its advantage is that it uses electronic control to focus, which can not only control the axis, deflection direction, focus position and focus size of the sound beam generated by the probe very flexibly and conveniently, but also ensure the accuracy easily. In non-destructive testing, ultrasonic phased array technology can improve signal-to-noise ratio, detection sensitivity and detection efficiency. [0004] The cross-section of the outer ring of the third-generation automobile wheel bearing contain...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an ultrasonic phased array detection method for the outer ring of the third-generation wheel bearing of the automobile in view of the above-mentioned existing problems, which can realize the non-destructive detection of internal defects of the outer ring of the wheel hub bearing with relatively complex geometric characteristics, and enhance the detection sensitivity. Improve detection efficiency

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