Technical blog

PROBLEM SLOVING: BENDING MACHINE

The problem

A customer of us asked for a consultance on a tube bending machine. This machine had an hydraulic system with a arm that turned while the tube advanced, pushed from an hydraulic piston. The combination between advancing velocity and arm turning gave birth to a deteminated curve. Obviously if one of the two parametres varied, the curve would not be longer equal one to the other. Our customer told us that the machine, after a time laps of one-two ours after the starting-up, was no able to maintain the same curve.


The cause

We decided to analize the fluid level contamination and we found that it was highly contaminated from solid particles, even in presence of a filtration system. The filter installed was a 25 micron in wire mesh media, so a nominal filtration.

The solution

We decided to clean up the fluid with an external 3micron absolute filtration system, after we reached a suitable contamination level, we replaced the 25microns, with a 5microns absolute rating filter. After this cleaning and replacement, the machine started working correctly.
 

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