Originally Posted by
TurboStep
What I was attempting to explain is that this problem is quite obviously due to the coolant nozzles moving up and down with the head and also not compensating for different tool lengths. The SmartCool solution simply corrects these symptoms by adjusting the angle to keep the flow pointed, in this case, where the tool axis meets the top of the part / hole (yes, I'm aware the SmartCool system also has other features).
Wouldn't it be better/easier to address the problem, rather than the symptoms, by prevening the nozzles moving up and down in the first place? If they are fixed vertically they could be aimed at the point where the tool axis meets the top of the part and would remain there, regardless of XY travel, head movements or tool length offsets. This would even be my preferred mounting position for a SmartERcool (with modified software) if I wanted to add a dither to reach an extended vertical range from the top of the part down to the tool tip. For tool changes the head would simply move up, leaving the nozzles behind at part level. At least for most my work the parts are relatively low in a vise or fixture. The ATC can then do its thing, clear of the nozzles, and return the next tool back down into the coolant flow. No adjustments for tool lengths necessary.
As the tool changes occur clear of the nozzles they can be arranged all around the machining axis to cover all sides of the part.
Obviously no one system is perfect for all applications and this approach might not work well for high parts but perhaps just a little more thought is needed. Also having nozzles on all sides might interfere with a 4th axis, but the offending section or nozzles could simply be removable.
Step