Newsgroups: comp.robotics
Path: brunix!news.Brown.EDU!noc.near.net!howland.reston.ans.net!vixen.cso.uiuc.edu!moe.ksu.ksu.edu!osuunx.ucc.okstate.edu!olesun!gcouger
From: gcouger@olesun.okstate.edu (Gordon Couger)
Subject: Re: orders of magnitude causes immense problems
Message-ID: <1993Aug19.234705.12050@osuunx.ucc.okstate.edu>
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Date: Thu, 19 Aug 1993 23:47:05 GMT
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>2) HEAT.  Heat is a big problem, the trouble is that the laws of
>physics are not invariant under scale translations. 

By far the best liquid for removing heat is water. It needs some 
additives to keep down the corrosion. I have used a Gulf product
for this. I don't recall the name but your Gulf distributor should 
be able to help. There are other products that work as well that
you should be able to find at your local machine tool dealer.

At  high speeds getting the coolant to the tool can be a challenge.
Some processes use a fine mist directed at the work tool interface.

If water is not a suitable base (milling magnesium) kerosene is
often used as a coolant. Often various things are added to enhance
the operation.

You should probably be looking at alternative machining methods
such as electro-discharge machining, chemical milling and electo-
deposition. These have the advantage of being non-contact methods
of machining that do not deform the part with pressure from the tool.

Good luck
Gordon

Gordon Couger 
Biosystems & Agricultural Engineering
Oklahoma State University
114 Ag Hall, Stillwater, OK  74074
gcouger@olesun.agen.okstate.edu 405-744-9763 day 624-2855 evenings  
