本文根据回转体工件加工中可能出现的缺陷,利用超声波为检测手段,设计以89C52单片机核心联合8253定时器和AC6684数据采集卡的检测控制系统。系统以超声波作为检测信号源,采用探头自动更换以适合不同回转体工件的检测要求。该检测中心实现了回转类零件进行超声自动检测,自动更换检测探头,具有检测工艺计算机辅助设计功能,检测结果可以进行图形图像化显示,还可以进行数字判读。 In this paper, based on the defects that may occur in the machining of the rotating body, the detection and control system of the 89C52 microcontroller with the 8253 timer and the AC6684 data acquisition card is designed. Ultrasonic system as the detection signal source, the probe automatically replaced to fit the detection requirements of different rotating body parts. The test center to achieve the rotary parts of the ultrasonic automatic detection, automatic replacement of detection probe, with the detection process of computer-aided design features, the test results can be graphically displayed, but also for digital interpretation.