On Mon, 13 Aug 2012 17:18:08 -0400, Eric Keller wrote: > On Mon, Aug 13, 2012 at 4:38 PM, EBo <e...@sandien.com> wrote: > >> >> I could see thermal being an issue if you had coolant running >> through >> the machine to stabilize the temperature of all the pieces parts >> > It has oil hydrostatic ways and if you don't let the oil warm up it > will be > change some critical dimensions. Touching off under these situations > will > cause bad parts once the oil gets to steady state temperature. You > probably want to warm it up longer than 15 minutes for tight > tolerance > parts. This machine is made to make parts that are precise enough > that > thermal issues are probably a significant portion of the error > budget.
It has been awhile since I've heard someone mention hydrostatic ways/bearings -- I remember seeing the specs on a lathe that was working down to 2 millionths of an inch... Yea, for anything less than .0001 thermal can matter a bunch. Did the lathe manufacturer not have a closed feedback system on the thermal to report when it was ready? That way if you turned it off for a couple of moments you did not have to wait for 15 minutes to an hour+. EBo -- ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
