超细硬质合金棒材缺陷电涡流检测系统研发

发布时间：2018-05-13 19:32

本文选题：自动检测 + 硬质合金棒材缺陷　；参考：《传感技术学报》2016年05期

【摘要】：PCB板钻头是由超细硬质合金棒材加工出来的,而超细硬质合金棒材在无心磨削加工过程中常会产生崩角、磨面等缺陷。针对目前硬质合金棒材缺陷人工检测效率低、误检率高的问题,采用电涡流无损检测方法,开发了一套硬质合金棒材缺陷检测系统,以单片机为控制核心,设计了数据采集、A/D转换、通讯、执行机构等电路,开发了相应的控制软件。通过实验研究了检测系统的提离效应和边界效应,实验结果表明研发的硬质合金棒材缺陷检测系统能有效分选出有缺陷的棒材,可以有效提高检测准确率和检测效率。
[Abstract]:The PCB plate bit is manufactured from the ultra-fine cemented carbide bar, and the defects such as caving angle and grinding surface are often produced in the centerless grinding process of the ultra-fine cemented carbide bar. Aiming at the problems of low efficiency and high error detection rate of carbide bar defects at present, a set of defect detection system of cemented carbide bar is developed by using eddy current nondestructive testing method, with single chip microcomputer as the control core. The A / D conversion, communication and actuator circuits of data acquisition system are designed, and the corresponding control software is developed. The lifting effect and the boundary effect of the testing system are studied experimentally. The experimental results show that the developed system can effectively separate out the defective bars, and can effectively improve the detection accuracy and efficiency.
【作者单位】：湖南大学国家高效磨削工程技术研究中心;硬质合金国家重点实验室;
【基金】：湖南省自然科学基金项目(12JJ6037) 硬质合金国家重点实验室项目(201103003)
【分类号】：TN41;TP274

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