.png)
Tweet
Who makes the most accurate toolroom lathe in the world? I was thinking of sizes 12x36 or similar. New or used!
-
-
In that general size any of three Schaublin models..the 135, 150 and 160. But if you get a little smaller in length between centers (20 inches BC), the Monarch 10ee and Hardinge HLV-H are in contention. Although there do exist Monarch 10ee's with 30 inch BC, but they are pretty rare. -
ME. As soon as I win that lottery.Comment
-
The most accurate lathe in that size range is the Precitech Nanoform 250 Ultra. It is a 9.8" swing and 8.6" Z. It can turn to an accuracy of 0.1 micron with a surface roughness of ~ one nanometer.
Free software for calculating bolt circles and similar: Click HereComment
-
1. 9.8" x 8.6" is not in the size range of 12" x 36"Originally posted by Evan
2. I presumed he meant a manual machine since he said "toolroom lathe". The 250 Ultra is officially a "CNC turning center"
Having said that, I'm glad you posted that link as I was not aware of the Nanoform...pretty cool machine.Last edited by Milacron of PM; 08-04-2006, 10:48 AM.Comment
-
It's the Man holding onto the handles that determines the ultimate accuracy of any machine.... be it a clapped out import or a high dollar beauty. I know that's not what you asked but that's what it boils down to.
Wow... where did the time go. I could of swore I was only out there for an hour.
Comment
-
No handles on that one.
Don, they have larger ones.
And, there are even larger ones...
Last edited by Evan; 08-04-2006, 12:48 PM.Free software for calculating bolt circles and similar: Click HereComment
-
At a size of 12 x 36, room temperature plays a role in determining the precision of a super-precise machine
Last edited by Elninio; 08-04-2006, 02:01 PM.Comment
-
The machine that Evan posted is liquid cooled.Originally posted by Elninio
Very neat machine! It uses linear hydrostatic oil slideways bedded in Durabar cast iron with a granite base.
When can I buy one at Harbor Freight?
"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."Comment
-
Originally posted by Evan
Your tax dollars at work (not you Evan ):
For the past 20 years, the LODTM has been dedicated to the Space-Based Laser program. Now, we at LLNL are dedicated to finding a broad customer base for the machine,
...
Even after 20 years, the LODTM is still the most accurate large machine tool in the world.
Central to the accuracy of the LODTM is a kinematically supported metrology frame, which is made of Super Invarâ„¢ and isolated from the environment with 1-mآ¾C temperature-controlled water. All movements of the machine are made relative to this stable, unstressed, isolated metrology frame. The frame provides the platform for the vacuum pathway laser interferometers, which measure linear distances, and the capacitance gauges, which measure spindle error motions for real-time correction. Almost the entire path between the part and the tool tip are included in this metrology loop, allowing parts to be made to the accuracy of the metrology.This complete measurement of actual machine motion allows complete compensation of both thermal and geometric motion error in the machine structure.
Pretty amazing that they have real-time spindle compensation..."Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."Comment
-
cock on= halfway between spot on and dead nuts ?Originally posted by John StevensonComment
-
Yes i meant manual lathes not CNC.Originally posted by D. Thomas
Comment
-
So NASA spent all that money for nothing?Originally posted by TinkererIt's the Man holding onto the handles that determines the ultimate accuracy of any machine.... be it a clapped out import or a high dollar beauty. I know that's not what you asked but that's what it boils down to.
Comment
Comment