Re: [CAD_CAM_EDM_DRO] Re: Lead screws and mill dust

In a message dated 11/22/2006 9:39:38 A.M. Eastern Standard Time,
wdavis364@... writes:

John, the rubber material has a tendency to sag on its own weight. Whenever
the table closes up near to the end the rubber material bunches into a mess.
Buying things online has its pitfalls. I was thinking more on the lines
similar to bellows on old style cameras. I've found some, but the price is way to
high. Up to $400 just for enogth material I would need.
I didn't think about the p-trap business. Need to look into that.
thanks
bill

----- Original Message -----
From: John Hansford
To: CAD_CAM_EDM_DRO@yahoogroups.com
Sent: Wednesday, November 22, 2006 6:26 AM
Subject: [CAD_CAM_EDM_DRO] Re: Lead screws and mill dust


Hi Bill,

What went wrong with the rubber material? Attaching it?
I use a rigged up thing with the shop-vac, but I hate the noise.
Plus the bellows wouldn't even work on my homemade machine.

I got some plumbing parts...P-Trap and an electrical conduit
strap and made that work..Don't know if that'd help you though.

John



Hi:

I can tell you from over 22 years experience working as a field engineer for
one of the largest machine tool builders for the woodworking industry that
as long as the wipers on the ball nut or lead nut and the wipers on the guide
bearings are intact, you won't have any problems caused by the wood dust.
Also, NOTHING you do can prevent the fine dust getting on the leadscrews and
guide bearings and it is this dust that tends to do the most damage. I have
seen machines that have been in production running 3 shifts a day, 5 to 6 days
a week for years with no protection except the wipers on the ball nuts and
guide bearings. If you want to protect the lead screws and the guides then you
should pay close attention to the wipers on them and make sure they are in
good shape. Otherwise nothing you put over them will stop wood dust from
getting on them and I mean NOTHING short of a perfectly sealed enclosure with
positive pressure inside it covering the screws and guides. That is pretty much
impossible to achieve.

I hope this helps some.

Regards

Randy Abernathy
4626 Old Stilesboro Road NW
Acworth, GA 30101-4066
E-mail: cnc002@...

I furnish technical support, repair, and other related services for your
industrial woodworking machinery. My background as Senior Service Engineer for
the SCMI Group for nearly fifteen years with factory training, combines with
my extensive background in electronics, mechanics, pneumatics, electrical and
CNC machinery to offer you needed support for your machinery. Services
include but are not limited to the following:


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