文档介绍：摘 要
在齿轮超声检测领域,长期以来没有针对中小模数齿轮的自动超声检测技术。本文针对汽车变速齿轮加工中可能出现的缺陷,利用超声波为检测手段,研究、开发了一种中小模数齿轮超声自动检测系统,为中小模数齿轮缺陷的无损检测,提供了一种超声自动检测技术。
论文分析了目前齿轮超声检测技术的现状,根据中小模数齿轮超声自动检测的特点进行了系统总体方案的设计。以超声波作为检测信号源,采用多探头多方位扫描方式、液浸法和A扫描、B扫描、c扫描相结合的成像方式,并通过企业现有的数控机床实现齿轮超声检测的扫描运动,从而完成中小模数齿轮超声自动检测。
论文以超声自动检测技术为重点研究内容。通过对中小模数齿轮的超声检测方式、检测工艺和扫描运动的研究,开发、制作了检测实验系统,通过实验证明了论文所设计的方案应用于中小模数齿轮缺陷检测的有效性。并在通用的工业控制的基础上,针对齿轮超声自动检测系统的控制要求,进行了控制系统的总体设计。开发了利用单片机与 8253定时器/计数器来实现系统控制任务的控制卡。提出了控制卡的具体设计方法。最后,在软件设计中,完成了下位机软件的开发流程以及各程序模块的设计。
关键词:齿轮,中小模数,超声检测,控制
ABSTRACT
TitJe:Research on Automatic Ultrasonic Testing technology for Gears witll
Middling and Small Modulus Author:Jiang Hui Supervisor:Zhang jitang
In the field of ultrasonic msfing for gear,there is not automatic ultrasonic testing
technology for gears wim middling and small modulus at the presem at the inner defect of automobile shift gears in manufacturing,adopting ultrasonic testing technology,the automatic testing system for gears with middling and small modulus is developed,and the automatic detection technique for testing gears wit}Iom scathe is provided.
To analyze the status of ultrasonic testing technology for gears,according to the traits of gears with middling and small modulus,to design the framework of automatic ultrasonic testing system for gears with middling and small is acted as signal source. adopting imaging technique bined of A-scanning,B-scanning and C·scanning,and the method of immersing in liquid,scanning movement of ultrasonic testing gears is actualized in NC machine tool,automatic ultrasonic testing of gears with middling and small modulus is plished.
Automatic Ultrasonic Testing technology is important content of the ultrasonic testing technique,ultrasonic testing craftwork,and scanning movement of ultrasonic testing gears with middling and small modulus are studied,testing system for gears witll middling and small modulus is validity of this method is proved by ex