Troubleshooting with data analysis

I got a call from the ring mill operator of my company.
He told me that the main roll stopped rotating while rolling a ring.
But the main roll was rotating when I arrived at the ring mill shop.
I wasn’t at the sight so I couldn’t see the problem.


 I looked over the technical data saved in the PC.
And I could find the cause of this problem as soon as I saw the data.

 * Technical data of CALTEK ring mill
I found the main motor was rotating at high speed and the motor current went down suddenly.
If the motor is over current, it could be stopped.

But the current is not high in this case.

I could guess the motor had no problem, it was normal.


But why didn’t the main roll rotate?
There’s a gear box between main motor and main roll.

It transfer the motor’s driving power to the main roll.

Motor rotates but main roll doesn’t rotate.  I can guess there’s something wrong in the gear box.
We checked the gear box and found the coupling connecting the motor and gear box has been broken.
We replaced the broken coupling with new one.


We can find the cause of the trouble and solve it fast and easily with the technical data.
I can’t imagine to operate the ring rolling machine and manage lots of troubles without the data.
We might have spent many hours to find the cause of the trouble today if there’s no data.

CALTEK ring rolling machine provide the data logging.
Our program saves almost all of the sensor data in real time.
The data is very helpful when you have trouble with the machine and try to solve the problem.
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