On 13 April 2013 23:32, Gene Heskett ghesk...@wdtv.com wrote:
Old but properly made:
http://www.ebay.co.uk/itm/Harrison-Milling-Machine-Vertical-attachment-and-clutch-/121092566051
Gentlemen,
I recently bought a machine similar to that one, at scrap value. The
rubber bellows for the knee
On 14 April 2013 11:20, Lars Andersson l...@larsandersson.com wrote:
http://forumbilder.se/CDVO4/fras
It has no power feed whatsoever but is not much worn and feels very
sound. It is meant to be converted to LinuxCNC as a hobby project.
I have not made anything this big before, wondering
i used 1600 oz in steppers pn my mill and am looking for more but still
need ballscrews and i want to try some way friction reduction. i get 60 ipm
wuth a @200 lb table, i havent powered the knee yet just the spindle head i
will need ballscrew for the z and am planning to coumterbalace the knee .
On 13 April 2013 04:11, Jon Elson el...@pico-systems.com wrote:
On my mini-mill, I mounted the spindle
encoder outside the head, see the last picture here :
http://pico-systems.com/minimill.html
An alternative:
On Saturday 13 April 2013 09:59:47 andy pugh did opine:
On 13 April 2013 04:11, Jon Elson el...@pico-systems.com wrote:
On my mini-mill, I mounted the spindle
encoder outside the head, see the last picture here :
http://pico-systems.com/minimill.html
An alternative:
On 13 April 2013 15:33, Gene Heskett ghesk...@wdtv.com wrote:
The bearing nut that is retaining that disk in the same manner I did use to
put one on the lathe, is below those nylon gears in the micro head. The
amount of shaft sticking up isn't sufficient to allow anything above it.
The draw
I reached the same conclusion. But I decided if I was going to upgrade
I was going to get something made in Yorkshire, not China.
me likes me some empirialism :)
thats why i converted a 1947 matson, but it is large :)
On Sat, Apr 13, 2013 at 4:40 PM, andy pugh bodge...@gmail.com wrote:
On 13
Gene Heskett wrote:
Of which, this toy has none. All nylon. For your encoder hanging
outboard, is is a problem to access the drawbolt for tool changing?
Not at all! You do have to be careful with wrenches not to not break
the pulleys, but there is a big
preload nut for the spindle
On Saturday 13 April 2013 18:31:16 andy pugh did opine:
On 13 April 2013 15:33, Gene Heskett ghesk...@wdtv.com wrote:
The bearing nut that is retaining that disk in the same manner I did
use to put one on the lathe, is below those nylon gears in the micro
head. The amount of shaft
On Saturday 13 April 2013 18:34:55 Jon Elson did opine:
Gene Heskett wrote:
Of which, this toy has none. All nylon. For your encoder hanging
outboard, is is a problem to access the drawbolt for tool changing?
Not at all! You do have to be careful with wrenches not to not break
the
Gene Heskett wrote:
Humm, now that you mention that, I read something similar on the net a few
years agom from somebody at Gecko. Could have been the same person I'd
have to assume.
Mariss is the designer and owner of Gecko, and an awesome engineer.
Which is 17 amps more than my
On Friday 12 April 2013 13:36:59 Jon Elson did opine:
Gene Heskett wrote:
Humm, now that you mention that, I read something similar on the net a
few years agom from somebody at Gecko. Could have been the same
person I'd have to assume.
Mariss is the designer and owner of Gecko, and an
On 12 April 2013 18:40, Gene Heskett ghesk...@wdtv.com wrote:
I don't have that on the mill, very limited space to install, and a very
dirty environment inside the gear case. Lots of flying grease. Which
doesn't help, and may hinder because grease deteriorates some plastics,
I've lost the
On Friday 12 April 2013 14:43:55 andy pugh did opine:
On 12 April 2013 18:40, Gene Heskett ghesk...@wdtv.com wrote:
I don't have that on the mill, very limited space to install, and a
very dirty environment inside the gear case. Lots of flying grease.
Which doesn't help, and may hinder
On 12 April 2013 19:45, Gene Heskett ghesk...@wdtv.com wrote:
Steel replacements exist:
http://www.littlemachineshop.com/products/product_view.php?ProductID=345
3category=
That is for the next bigger mill,
Some of us have hobbing equipment and can make gears.
--
atp
If you can't fix it,
On Friday 12 April 2013 18:45:02 andy pugh did opine:
On 12 April 2013 19:45, Gene Heskett ghesk...@wdtv.com wrote:
Steel replacements exist:
http://www.littlemachineshop.com/products/product_view.php?ProductID=
345 3category=
That is for the next bigger mill,
Some of us have
On 12 April 2013 23:55, Gene Heskett ghesk...@wdtv.com wrote:
Some of us have hobbing equipment and can make gears.
Maybe, but thats a lot of work for someone with little return no noise
reduction.
I do it for fun. But you will be appalled at the noise increase.
Belt drive probably is the
On Friday 12 April 2013 21:26:22 andy pugh did opine:
On 12 April 2013 23:55, Gene Heskett ghesk...@wdtv.com wrote:
Some of us have hobbing equipment and can make gears.
Maybe, but thats a lot of work for someone with little return no
noise reduction.
I do it for fun. But you will
Gene Heskett wrote:
I don't have that on the mill, very limited space to install, and a very
dirty environment inside the gear case. Lots of flying grease. Which
doesn't help, and may hinder because grease deteriorates some plastics,
I've lost the hubs out of 2 of those nylon gears now.
On Saturday 13 April 2013 00:13:15 Jon Elson did opine:
Gene Heskett wrote:
I don't have that on the mill, very limited space to install, and a
very dirty environment inside the gear case. Lots of flying grease.
Which doesn't help, and may hinder because grease deteriorates some
Search for Leadshine closed loop stepper on YouTube. Looks like some very
smooth and quiet operation from steppers.
--
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data.
That's nice presentation, and exactly what I'm looking for to improve my two
rotary axes with steppers...
Search for Leadshine closed loop stepper on YouTube. Looks like some very
smooth and quiet operation from steppers.
Thanks Gene, this has been a very enriching discussion.
No plans still for the Hubles's mirror :).
Cheers,
Javier
On Wed, Apr 10, 2013 at 7:37 PM, Gene Heskett ghesk...@wdtv.com wrote:
On Wednesday 10 April 2013 13:01:29 Javier Ros did opine:
This system
Gene Heskett wrote:
Somebody thinking outside the box, and making perfect sense. The only
fly in the soup is the 10,000 step encoder, and servicing it at 200 rpS to
get that 12,000 rpms
If you run a stepper motor at 12,000 RPM, it will burn up in minutes. You
can spin a typical stepper
] Closed loop stepping system
Gene Heskett wrote:
Somebody thinking outside the box, and making perfect sense. The only
fly in the soup is the 10,000 step encoder, and servicing it at 200 rpS to
get that 12,000 rpms
If you run a stepper motor at 12,000 RPM, it will burn up in minutes. You
On Thursday 11 April 2013 22:13:10 Jon Elson did opine:
Gene Heskett wrote:
Somebody thinking outside the box, and making perfect sense. The
only fly in the soup is the 10,000 step encoder, and servicing it at
200 rpS to get that 12,000 rpms
If you run a stepper motor at 12,000 RPM, it
Gene Heskett wrote:
And I never considered the iron loses Jon, but you are dead on.
Mariss Freimanis of Gecko describes some torture tests he did years ago
and reported this.
I make affordable servo amps for brushless motors, and
have one on my minimill. You do need to get rotor
On Friday 12 April 2013 00:56:36 Jon Elson did opine:
Gene Heskett wrote:
And I never considered the iron loses Jon, but you are dead on.
Mariss Freimanis of Gecko describes some torture tests he did years ago
and reported this.
Humm, now that you mention that, I read something similar on
This system
http://www.automationtechnologiesinc
.com/products-page/nema23-closed-loop-stepper-motor-system-hybrid-servo-kit/hybrid-servo-drive-kl-5080h
Is apparently a stepper motor that is controlled as a brushless.
Essentially a stepper is a brushless. This needs a encoder, probably one
with
On 10 April 2013 12:18, Javier Ros j...@unavarra.es wrote:
Is apparently a stepper motor that is controlled as a brushless.
Essentially a stepper is a brushless. This needs a encoder, probably one
with a index pulse correctly positioned,
so that the electronics can compute the switching
On Wednesday 10 April 2013 13:01:29 Javier Ros did opine:
This system
http://www.automationtechnologiesinc
.com/products-page/nema23-closed-loop-stepper-motor-system-hybrid-servo-
kit/hybrid-servo-drive-kl-5080h
Is apparently a stepper motor that is controlled as a brushless.
On 04/10/2013 07:18 AM, Javier Ros wrote:
Is apparently a stepper motor that is controlled as a brushless.
Essentially a stepper is a brushless. This needs a encoder, probably one
with a index pulse correctly positioned,
so that the electronics can compute the switching accurately.
This
On Thursday 11 April 2013 00:58:10 cogoman did opine:
On 04/10/2013 07:18 AM, Javier Ros wrote:
Is apparently a stepper motor that is controlled as a brushless.
Essentially a stepper is a brushless. This needs a encoder, probably
one with a index pulse correctly positioned,
so that the
Does anyone have any experiences using this this system with linuxcnc?
http://www.fastech.co.kr/bbs/eng/product.php?mode=view1uid=1#
As far as I understand, there would be only one feedback signal from driver to
linuxcnc, telling that stepper is in position or not...
In my case might be
On 9 April 2013 10:11, Tomaz T. tomaz_...@hotmail.com wrote:
http://www.fastech.co.kr/bbs/eng/product.php?mode=view1uid=1#
It isn't immediately clear what advantage it gives over normal
steppers other than stall-detection. I guess it should also be able to
recover from a stall too, so perhaps
The whole point is that I don't have any feedback from steppers at this stage,
and as I said, the cheapest solution would be to simply change the existing
one with the one with closed loop future (and also drivers). So the basic
idea might be to use In-Position signal (output) from stepper
2013/4/10 Tomaz T. tomaz_...@hotmail.com
The whole point is that I don't have any feedback from steppers at this
stage, and as I said, the cheapest solution would be to simply change the
existing one with the one with closed loop future (and also drivers). So
the basic idea might be to use
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