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| Fault Maintainance of Cup Wheel Automatic Grinding Machine in HS-200BZ Laboratory |
| ZHAO Wen-chong |
| Testing Center, Sichuan Panzhihua Iron and Steel Research Institute, State Key Laboratory of Vanadium Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China |
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Abstract A HS-200BZ laboratory cup wheel automatic grinding machine is used, and its grinding wheel as well as horizontal movement works normally, but the grinding head cannot move up and down. The upper and lower feed machinery part works normal without jamming, but with active electricity the stepping motor does not work. By checking the electric control part, it can be found that there is no 55V AC power supply for stepping motor driver (MS-2HO-90M), and the power supply transformer output of 55V voltage is normal. Fianlly, it is confirmed that the break of UF11 fuse in protection section occurs. After the replacement and the trial operation , the grinding machine works normally.
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Received: 07 January 2013
Published: 17 April 2014
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2014, Vol. 32 
