Manufacturing Technology 2018, 18(6):954-961 | DOI: 10.21062/ujep/207.2018/a/1213-2489/MT/18/6/954

Process Online Monitoring on Cold Extrusion of Internal Thread in High-strength Steel

Hong Miao1, Xiang Shan1, Shanwen Zhang1,*, Yifu Jin1, Dunwen Zuo2
1 College of Mechanical Engineering, yangzhou University, yangzhou 225000, China;
2 Mechanical Engineering Institute, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

In order to solve the problems of data collection, data storage, artificial neural networks, real-time display of images, real-time monitoring of current status and recurrence of historical data, online monitoring system of cold extrusion of internal thread process is designed by LabVIEW8.5. The time-domain analysis and time-frequency-domain analysis are carried out for the torque signal, temperature signal, vibration signal, acoustic emission signal and transmitted signal. The research shows that: this online monitoring system can forecast processing status accurately, raise real-time alarm to replace or re-install the thread forming tap, accordingly avoids effectively the wreckage of thread forming tap and the scrap of work pieces; the fault recognition rate reaches 97%. And the practical model of online monitoring system for cold extrusion of internal thread process can be used to monitor working process.

Keywords: Internal thread; Extrusion; Torque; Temperature; Online monitoring

Published: December 1, 2018  Show citation

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Miao H, Shan X, Zhang S, Jin Y, Zuo D. Process Online Monitoring on Cold Extrusion of Internal Thread in High-strength Steel. Manufacturing Technology. 2018;18(6):954-961. doi: 10.21062/ujep/207.2018/a/1213-2489/MT/18/6/954.
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