On 7 November 2013 01:11, tcninj...@yahoo.com wrote:
why doesn't someone try turning the nut not the screw? Bridgeport bosses X
axis screw was bolted to the end of the table
I actually rather like this arrangement, and have used it in two
places on my mill.
Z:
Why would you need to shield the belts? I've run my plasma with the
belts hanging out in the breeze for years...
I agree a shaft connecting both sides of the gantry is the best way to
go. I did find a thin wall tube to connect the sides worked much better
than a shaft.
JT
On 11/6/2013 7:27
I have such a setup where I turn the nut. It works very well.
On 2013/11/07 03:11 AM, tcninj...@yahoo.com wrote:
why doesn't someone try turning the nut not the screw? Bridgeport bosses X
axis screw was bolted to the end of the table
Terry
On Nov 6, 2013, at 5:24 PM, John Thornton
Probably another issue with turning the nut is how can you automatically
lube the nut?My Bridgeport has a central lube system with tubes
running all over and an auto oiler. The tubes run right to the ball
screw nuts...
Just a thought...
Dave
On 11/7/2013 9:34 AM, Marius Liebenberg wrote:
On Thursday 07 November 2013 11:04:12 andy pugh did opine:
On 7 November 2013 01:11, tcninj...@yahoo.com wrote:
why doesn't someone try turning the nut not the screw? Bridgeport
bosses X axis screw was bolted to the end of the table
I actually rather like this arrangement, and have used
On 7 November 2013 14:50, Dave Cole linuxcncro...@gmail.com wrote:
Probably another issue with turning the nut is how can you automatically
lube the nut?
If you look at my X-nut, there is a small threaded hole in the casting
below the screw. This goes to a drilling that emerges between the two
I'm looking to make a new CNC table for both Plasma and possibly Plastic and
Aluminum cutting. It will be about 1.8m x 1.2m.
I was wondering if anyone has a similar configuration that is run with
toothed belts instead of ballscrews? Obvously a lot cheaper option, however,
I was wondering on the
A lot of that depends on your belt arrangement. They make linear
motion belting with a unique tooth profile. They use steel cords in
polyurethane belts to minimize stretch and they can obtain zero backlash
with that setup. To get more rigidity you can go with a wider belt but
then the
On 6 November 2013 19:47, Marshland Engineering
marshl...@marshland.co.nz wrote:
I was wondering if anyone has a similar configuration that is run with
toothed belts instead of ballscrews?
Have a look at the Bell-Everman Servobelt arrangement. That
minimises the amount of belt that has the
That is a sweet setup you have Andy...That hob does not look cheap..
The problem with the Bell Everman drive setup is that by the time you
cut the belt engagement grooves in the mating surface you have
basically created a rack that is engaged with a belt rather than a
pinion and to me that
On 6 November 2013 22:14, Dave Cole linuxcncro...@gmail.com wrote:
That is a sweet setup you have Andy...That hob does not look cheap..
eBay, £35.
The problem with the Bell Everman drive setup is that by the time you
cut the belt engagement grooves in the mating surface
...
I saw
I have a belt driven plasma table that I've been using for years, in
fact it was my first EMC machine that I built. The biggest problem with
my design is the linear bearings that I used, they just slide over the
extruded aluminum. I would go with bigger belts next time or invest in
the dual
On Wed, 06 Nov 2013 15:43:17 -0500, you wrote:
A lot of that depends on your belt arrangement. They make linear
motion belting with a unique tooth profile. They use steel cords in
polyurethane belts to minimize stretch and they can obtain zero backlash
with that setup. To get more
why doesn't someone try turning the nut not the screw? Bridgeport bosses X axis
screw was bolted to the end of the table
Terry
On Nov 6, 2013, at 5:24 PM, John Thornton bjt...@gmail.com wrote:
I have a belt driven plasma table that I've been using for years, in
fact it was my first EMC
On 11/6/2013 12:47 PM, Marshland Engineering wrote:
I'm looking to make a new CNC table for both Plasma and possibly Plastic and
Aluminum cutting. It will be about 1.8m x 1.2m.
I was wondering if anyone has a similar configuration that is run with
toothed belts instead of ballscrews? Obvously
On Wednesday 06 November 2013 23:00:33 tcninj...@yahoo.com did opine:
why doesn't someone try turning the nut not the screw? Bridgeport bosses
X axis screw was bolted to the end of the table
Terry
When I did the 2nd attempt to make a Z drive for my mill, that is what I
did. Now that I
Gotta love ebay.. :-)
On 11/6/2013 5:21 PM, andy pugh wrote:
On 6 November 2013 22:14, Dave Cole linuxcncro...@gmail.com wrote:
That is a sweet setup you have Andy...That hob does not look cheap..
eBay, £35.
The problem with the Bell Everman drive setup is that by the time you
cut the
That gets rid of the whip/critical speed problem but doesn't solve the
cost issue. In general, driving the nut is much more difficult than
driving the screw.
I have a Bridgeport Series 2 Boss and the X screw is driven via the end
of the screw off the left end.
Dave
On 11/6/2013 8:11 PM,
2013/11/7 tcninj...@yahoo.com
why doesn't someone try turning the nut not the screw? Bridgeport bosses X
axis screw was bolted to the end of the table
Oh, there have been attempts to do that. I know that Andy has something
like that and I myself also built a machine with fixed ballscrew and
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