Coolant Chillers

[GoetzInd]

Hello All,

We are having a hard time holding some tight tolerances during unattended operation. I am pretty sure that the majority of the problem is due to thermal growth of the machine (A rather large mill turn). My question is, who has experience with coolant chillers? What brands, and with what degree of success. Thanks for the help.

 

Mike

[crazy^millman]

Is the machine in a climate controlled area? Chillers will help, but not completely. If the shop temp changes 20 to 40 deg from day to night only way I think to control this will control the machine as well as the coolant. We have used them in different shops I have worked at for tight tolerance work, but that was to keep the material cool not the machine per say. It does help, but only a little bit. The ways, on mills/turn are out in the air unlike regular mills where they are under it and on top of the coolant tank.

 

Just some things to think about.

 

HTH

[GoetzInd]

Yes Ron,

Shop is AC'd between 70-75 deg.

 

Thanks,

Mike

[Jerosu]

We run Cooljet chillers in a cell with three machines. They work well controlling growth of tombstones since HP coolant heats the coolant up to around 99 deg. without chillers.

 

They also help a great deal reducing the makeup coolant we have to add. Our shop is "climate controlled" although the AC gets stretched pretty thin with the outside temp is around 100. We aim to keep the coolant at ambient temp., usually around 72ish