"Steve Ackman" wrote in message
rg...
In , on Mon, 27 Oct
2008 20:24:52 -0400, Wes, wrote:
Steve Ackman wrote:

All the surface grinders I can recall using had
coolant. Matter of fact, where I went though my
apprenticeship, only the mud produced by a grinding
machine was "swarf." Pretty much any other machine
made "chips."


I've seen the effects of a Harrig 618 placed too close to a lathe.
Grinder was always run
with coolant but an astonishing amount of abrasive crud made its way to
the lathe. Sure
made me feel sick to see that nice Leblonde being treated that way.
During my nightly
walk around, I wiped the lathe down to help save it.

It and and the rest of the machine tools were moved a while back to
another area of the
shop, much better layout, maybe the lathe will live a long life now.

Both places I specifically worked in precision
grinding, the grind shops were set off.
At PNSY, the small machines were enclosed in their
own four walls and the big grinders and hones were
pretty much together out on the floor bounded by
aisles.
At NADEP, the grind shop was just segregated to its
own section of the machine shop by aisles.

Every production grinding machine in both shops ran
coolant (or oil). Only the tool and cutter grinders
(also in their own section) ever ground anything dry...
and they all had a hose from the central vacuum.

Tool and die grinding usually is done dry. Production grinding usually is
done wet.

--
Ed Huntress