Single-motor-driven handheld ultrasonic automatic scanner for solder joints

Abstract

The invention relates to a single-motor-driven handheld welding point ultrasonic automatic scanner, and belongs to the field of ultrasonic detection. The single-motor-driven handheld welding point ultrasonic automatic scanner is characterized in that an X-Y bidirectional movement module and an accessory module are fixed on a shell module; a single-motor-driven device is arranged in the X-Y bidirectional movement module to realize X-Y direction scanning movement; an ultrasonic transmitting / receiving module is fixed on the X-Y bidirectional movement module to drive an ultrasonic probe to scan on a workpiece surface in an X-Y direction; the accessory module is used for connecting an internal circuit of the scanner with an external circuit to realize external signal transmission. The single-motor-driven handheld welding point ultrasonic automatic scanner has the advantages that a single motor is used for driving the X-Y bidirectional movement module to move, so that the scanning speed is increased greatly; high scanning accuracy is achieved; a water-submerged self-sealing structure is used, so that good coupling is kept between the ultrasonic probe and a delay block, an external water submerging system is not required, the scanning cost is lowered, and meanwhile the requirement on the size of a workpiece to be detected is lowered; the position and transmission way of the single motor are set reasonably, so that the size of the ultrasonic scanner is reduced, and convenience is brought to handheld operation.

Description

technical field [0001] The invention relates to the field of ultrasonic testing, in particular to a hand-held ultrasonic automatic scanner for welding spots driven by a single motor. Background technique [0002] Ultrasound is often used to detect internal defects of workpieces. In the field of ultrasonic inspection of solder joints, single-point ultrasonic probes are often used to perform A-scan detection on a certain position, and the internal quality status of a certain area of ​​the workpiece is judged by manually moving the position of the ultrasonic probe. This detection method is only suitable for qualitative judgment and cannot be used for quantitative evaluation. [0003] Quantitative ultrasonic testing generally has the following two methods: one is to use ultrasonic phased array probes to cover the solder joints, which can realize quantitative testing of the internal quality of solder joints. Due to the high cost of the phased array probe, it is difficult to be w...

AI Technical Summary

Problems solved by technology

This method is costly, takes up a large area, and cannot be applied to the case of large workpieces. It is difficult to be widely used and needs to be improved urgently.

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