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arXiv 1808.05347cs.LGstat.ML
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使用深度学习进行刀具破损检测

Tool Breakage Detection using Deep Learning

UESTC(电子科技大学);Union Big Data(联盟大数据)

Guang Li, Xin Yang, Duanbing Chen, Anxing Song, Yuke Fang, Junlin Zhou

摘要:

在制造过程中,钢和其他金属主要通过计算机数控(CNC)机器在制造过程中切割和成形。为了保持制造过程的高生产率和效率,工程师需要实时监控数控机床的过程,以及机床的寿命管理。在实际生产过程中,机床经常在没有任何征兆的情况下发生断裂,这一问题严重影响了多年的生产过程。以往的研究提出了许多不同的方法来监测和检测机床的断裂。然而,由于实时检测要求高、数据采集和传输困难等复杂的实际加工过程,理论实验与实际加工过程仍存在较大差距。本文采用主轴电流法对机床进行故障检测,具有实时性强、成本低、安装方便等优点。通过分析刀具磨损过程中机床主轴电流的变化特征,利用卷积神经网络(CNN)对刀具破损状态进行预测。此外,我们使用BP神经网络来了解CNN的可靠性。结果表明,我们的CNN方法可以检测刀具破损的准确率为93%,而BP的最佳性能为80%。

英文摘要:

In manufacture, steel and other metals are mainly cut and shaped during the fabrication process by computer numerical control (CNC) machines. To keep high productivity and efficiency of the fabrication process, engineers need to monitor the real-time process of CNC machines, and the lifetime management of machine tools. In a real manufacturing process, breakage of machine tools usually happens without any indication, this problem seriously affects the fabrication process for many years. Previous studies suggested many different approaches for monitoring and detecting the breakage of machine tools. However, there still exists a big gap between academic experiments and the complex real fabrication processes such as the high demands of real-time detections, the difficulty in data acquisition and transmission. In this work, we use the spindle current approach to detect the breakage of machine tools, which has the high performance of real-time monitoring, low cost, and easy to install. We analyze the features of the current of a milling machine spindle through tools wearing processes, and then we predict the status of tool breakage by a convolutional neural network(CNN). In addition, we use a BP neural network to understand the reliability of the CNN. The results show that our CNN approach can detect tool breakage with an accuracy of 93%, while the best performance of BP is 80%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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