PT Journal
AU Miao, H
   Shan, X
   Zhang, S
   Jin, Y
   Zuo, D
TI Process Online Monitoring on Cold Extrusion of Internal Thread in High-strength Steel
SO Manufacturing Technology Journal
PY 2018
BP 954
EP 961
VL 18
IS 6
DI 10.21062/ujep/207.2018/a/1213-2489/MT/18/6/954
DE Internal thread; Extrusion; Torque; Temperature; Online monitoring
AB 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.
ER