On 7 November 2013 00:09, andy pugh wrote:
> IGES file: http://www.bodgesoc.org/cycloidal.igs
This file has now been updated with the adjustable-throw eccentric
(using a vernier-hole arrangement it allows adjustment in 4um
increments (.00016")
Also there is now a http://www.bodgesoc.org/cycloida
On Wednesday 06 November 2013 20:09:55 andy pugh did opine:
> On 7 November 2013 00:19, Gene Heskett wrote:
> >> IGES file: http://www.bodgesoc.org/cycloidal.igs
> >
> > Unforch, I don't have a thing that can render that, or make gcode from
> > it. Not your fault of course, but I refuse to pay t
On Wednesday 06 November 2013 19:51:17 W. Martinjak did opine:
> On 2013-11-07 01:19, Gene Heskett wrote:
> > IGES file: http://www.bodgesoc.org/cycloidal.igs
> > Unforch, I don't have a thing that can render that, or make gcode from
> > it. Not your fault of course, but I refuse to pay the micros
On 7 November 2013 00:19, Gene Heskett wrote:
>> IGES file: http://www.bodgesoc.org/cycloidal.igs
>
> Unforch, I don't have a thing that can render that, or make gcode from it.
> Not your fault of course, but I refuse to pay the microsoft tax.
IGES is a NIST standard, nothing to do with Microsof
On Wednesday 06 November 2013 19:51:04 W. Martinjak did opine:
> On 2013-11-07 01:19, Gene Heskett wrote:
> > IGES file: http://www.bodgesoc.org/cycloidal.igs
> > Unforch, I don't have a thing that can render that, or make gcode from
> > it. Not your fault of course, but I refuse to pay the micros
On 2013-11-07 01:19, Gene Heskett wrote:
> IGES file: http://www.bodgesoc.org/cycloidal.igs
> Unforch, I don't have a thing that can render that, or make gcode from it.
> Not your fault of course, but I refuse to pay the microsoft tax.
>
> Cheers, Gene
Freecad can handle this type.
--
"In der
On Wednesday 06 November 2013 19:16:04 andy pugh did opine:
> On 6 November 2013 23:14, Gene Heskett wrote:
> > Has trial code to carve been composed yet?
>
> IGES file: http://www.bodgesoc.org/cycloidal.igs
Unforch, I don't have a thing that can render that, or make gcode from it.
Not your f
On 6 November 2013 23:14, Gene Heskett wrote:
> Has trial code to carve been composed yet?
IGES file: http://www.bodgesoc.org/cycloidal.igs
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
---
On 6 November 2013 23:14, Gene Heskett wrote:
>> Eccentricity could be adjusted by a second, thin, static eccentric
>> round the main one.
>
> Ok, I wondered about that since the animation doesn't show that at all
It's not there to show :-)
> Has trial code to carve been composed yet?
I only d
On Wednesday 06 November 2013 17:58:53 andy pugh did opine:
> On 6 November 2013 21:08, Gene Heskett wrote:
> > That sure looks doable. And scalable to any size. And with that many
> > teeth engaged at once, it should be essentially unbreakable and very
> > low lash if properly adjusted with th
On 6 November 2013 21:08, Gene Heskett wrote:
> That sure looks doable. And scalable to any size. And with that many
> teeth engaged at once, it should be essentially unbreakable and very low
> lash if properly adjusted with the wedges. They, I assume actually adjust
> the eccentricity of inne
On Wednesday 06 November 2013 16:02:21 andy pugh did opine:
> On 4 November 2013 00:03, Florian Rist wrote:
> > Hmm, so I don't get it. The ratio is almost one so, right?
>
> I made an animation to demonstrate the concept:
> http://youtu.be/VrvwlPxRhKU
That sure looks doable. And scalable to a
On 4 November 2013 00:03, Florian Rist wrote:
> Hmm, so I don't get it. The ratio is almost one so, right?
I made an animation to demonstrate the concept:
http://youtu.be/VrvwlPxRhKU
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
On Tuesday 05 November 2013 08:03:35 Eric Keller did opine:
> I'm too lazy to get an igs viewer, is it a harmonic drive? I have a
> pile of harmonic drives in the basement off of a robot I bought cheap.
By a pile, I assume several.
1. Are they small enough I could make a table, or maybe even st
Stuart Stevenson wrote:
> My goal is to drive the table (large dia) and keep the wobble plate from
> rotating as it wobbles.
You just need two eccentrics. The other one can be left free. (Hmm, maybe
you actually need a 3rd eccentric to prevent any rotation of the plate.)
I've seen some commercial
On Monday 04 November 2013 10:18:59 andy pugh did opine:
> On 4 November 2013 14:02, Stuart Stevenson wrote:
> > My goal is to drive the table (large dia) and keep the wobble plate
> > from rotating as it wobbles.
> > The cross slot on the wobble plate may or may not stay.
>
> The simplest solut
On Monday 04 November 2013 10:14:05 andy pugh did opine:
> On 4 November 2013 13:39, Stuart Stevenson wrote:
> > You have all of what is completed. I am doing this in my spare
> > moments. The 'wobbling' system has not been modeled.
>
> The wobbling system exercised my imagination for weeks. The
On 4 November 2013 14:02, Stuart Stevenson wrote:
> My goal is to drive the table (large dia) and keep the wobble plate from
> rotating as it wobbles.
> The cross slot on the wobble plate may or may not stay.
The simplest solution (especially if you have the parts) is probably a
couple of sets of
My goal is to drive the table (large dia) and keep the wobble plate from
rotating as it wobbles.
The cross slot on the wobble plate may or may not stay.
On Nov 4, 2013 7:57 AM, "andy pugh" wrote:
> On 4 November 2013 13:39, Stuart Stevenson wrote:
> > You have all of what is completed. I am doin
On 4 November 2013 13:39, Stuart Stevenson wrote:
> You have all of what is completed. I am doing this in my spare moments. The
> 'wobbling' system has not been modeled.
The wobbling system exercised my imagination for weeks. The version I
showed a picture of earlier was about V3 and had grooves
You have all of what is completed. I am doing this in my spare moments. The
'wobbling' system has not been modeled.
On Mon, Nov 4, 2013 at 7:33 AM, Florian Rist wrote:
> Hi Stuart
>
> > http://en.wikipedia.org/wiki/Cycloidal_drive
> Thanks for the link.
>
> I searched for 'orbital drive' but on
Hi Stuart
> http://en.wikipedia.org/wiki/Cycloidal_drive
Thanks for the link.
I searched for 'orbital drive' but only found 1964 (or so) patent with a
few drawings that didn't help to much.
I knew this kind of drive, but could not see it in the iges sketch file,
as I didn't see any of the inner
On 4 November 2013 00:03, Florian Rist wrote:
> Hmm, so I don't get it. The ratio is almost one so, right?
One gear doesn't rotate, it just wobbles.
This is the design I came up with a few years ago, but I was trying to
solve a packaging problem, not a backlash problem.
http://imagebin.org/2757
http://en.wikipedia.org/wiki/Cycloidal_drive
this link - with the 11 outer teeth (white) and 10 teeth on the center
(moving yellow) gear - gives a 10 to 1 gear reduction between the input
(green) shaft and the output (purple) shaft
with finer teeth the reduction can be much higher
On Sun, Nov 3,
Hi Stuart
> Not harmonic
> Same concept of two gears - one with one less tooth than the other.
> All parts are solid - no flexing.
Hmm, so I don't get it. The ratio is almost one so, right?
Flo
--
Android is increasing
Not harmonic
Same concept of two gears - one with one less tooth than the other.
All parts are solid - no flexing.
Search for orbital drive.
On Nov 3, 2013 1:55 PM, "Eric Keller" wrote:
> I'm too lazy to get an igs viewer, is it a harmonic drive? I have a
> pile of harmonic drives in the basemen
I'm too lazy to get an igs viewer, is it a harmonic drive? I have a
pile of harmonic drives in the basement off of a robot I bought cheap.
On Sun, Nov 3, 2013 at 10:49 AM, Stuart Stevenson wrote:
> it is a cycloidal drive
>
>
> On Sun, Nov 3, 2013 at 7:32 AM, Marius Liebenberg
> wrote:
>
>> And
Thats the one!! I knew it has something to do with round and round.
On 2013/11/03 05:49 PM, Stuart Stevenson wrote:
> it is a cycloidal drive
>
>
> On Sun, Nov 3, 2013 at 7:32 AM, Marius Liebenberg
> wrote:
>
>> Andy,
>> I am busy with such a design. I think it is called an Orbital drive. I
>> ha
it is a cycloidal drive
On Sun, Nov 3, 2013 at 7:32 AM, Marius Liebenberg wrote:
> Andy,
> I am busy with such a design. I think it is called an Orbital drive. I
> have not cut any parts yet but will start soon. Can you share your
> experiences with this idea?
>
> On 2013/11/03 12:53 AM, andy pu
Andy,
I am busy with such a design. I think it is called an Orbital drive. I
have not cut any parts yet but will start soon. Can you share your
experiences with this idea?
On 2013/11/03 12:53 AM, andy pugh wrote:
> On 2 November 2013 19:47, Stuart Stevenson wrote:
>> Andy,
>>this is my idea
The inside plate (with the of gear profile) is meant to wobble on an
eccentric but not spin.
On Nov 2, 2013 5:56 PM, "andy pugh" wrote:
> On 2 November 2013 19:47, Stuart Stevenson wrote:
> > Andy,
> > this is my idea of a rotary drive
> >
> > https://www.dropbox.com/s/jbc53qf9dx4cxjp/rotarycu
On 2 November 2013 19:47, Stuart Stevenson wrote:
> Andy,
> this is my idea of a rotary drive
>
> https://www.dropbox.com/s/jbc53qf9dx4cxjp/rotarycurvic.igs
I think I tried to build something like that once, in fact I was
hoping to use it in a product.
Mine was an internal gear driving a spur g
Andy,
this is my idea of a rotary drive
https://www.dropbox.com/s/jbc53qf9dx4cxjp/rotarycurvic.igs
On Thu, Oct 31, 2013 at 8:49 PM, Stuart Stevenson wrote:
> I went back and reread the previous emails and saw you called what we were
> working on 'enveloping'. I had not remembered that term.
I went back and reread the previous emails and saw you called what we were
working on 'enveloping'. I had not remembered that term.
I am trying to see how to modify the curve to allow what you want. I have
not seen a way yet.
On Oct 31, 2013 6:19 PM, "andy pugh" wrote:
> On 31 October 2013 23:11,
On 31 October 2013 23:11, Stuart Stevenson wrote:
> Describe your enveloping worm so I can try to model it.
That is what we have been modelling earlier.
(I am a bit confused)
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
-
Describe your enveloping worm so I can try to model it.
On Oct 31, 2013 6:04 PM, "andy pugh" wrote:
> On 31 October 2013 22:29, Stuart Stevenson wrote:
> > Andy,
> > Is this more like what you want?
> >
> > https://www.dropbox.com/s/7g46vdlz2svokn7/worm2.igs
>
> That is a lot more like the JHU
On 31 October 2013 22:29, Stuart Stevenson wrote:
> Andy,
> Is this more like what you want?
>
> https://www.dropbox.com/s/7g46vdlz2svokn7/worm2.igs
That is a lot more like the JHU version, and maybe that is why they
did it that way.
But I am still more interested in trying the enveloping worm
Andy,
Is this more like what you want?
https://www.dropbox.com/s/7g46vdlz2svokn7/worm2.igs
On Wed, Oct 30, 2013 at 2:47 PM, Stuart Stevenson wrote:
> here is a more complete model for your enjoyment/critique
>
> https://www.dropbox.com/s/boyfgtldlw0kw8h/BallWormex2.igs
>
>
> On Wed, Oct 30,
here is a more complete model for your enjoyment/critique
https://www.dropbox.com/s/boyfgtldlw0kw8h/BallWormex2.igs
On Wed, Oct 30, 2013 at 5:12 AM, Dave Caroline
wrote:
> Before anyone makes new rotaries, I have an interesting article from
>
> Summer school in electrical engineering, proceedin
Before anyone makes new rotaries, I have an interesting article from
Summer school in electrical engineering, proceedings July 12 to 16 1948
BTH, The British Thomson-Houston Co Ltd
Vibration and noise problems in engineering
They were using an early spectrum analysis tool listening to the noise
fr
ndy pugh [mailto:bodge...@gmail.com]
Sent: Wednesday, 30 October 2013 6:42 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Rotary stage
On 29 October 2013 13:18, Stuart Stevenson wrote:
> Here is a model of the worm and table using the curve in the previous
> iges file
>
2013 09:42 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Rotary stage
>
> On 29 October 2013 13:18, Stuart Stevenson wrote:
> > Here is a model of the worm and table using the curve in the previous
> > iges file
> >
> > https://www.dropbox.
I will send you another igs file with different parameters.
On Oct 29, 2013 2:44 PM, "andy pugh" wrote:
> On 29 October 2013 13:18, Stuart Stevenson wrote:
> > Here is a model of the worm and table using the curve in the previous
> iges
> > file
> >
> > https://www.dropbox.com/s/vq62ky4lmmr1nnc/
On 29 October 2013 20:33, Belli Button wrote:
> Try www.zw3d.com opens it fine, free 30 day trial version.
So, how did the teeth come out?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
---
Try www.zw3d.com opens it fine, free 30 day trial version.
Cheers,
-Original Message-
From: andy pugh [mailto:bodge...@gmail.com]
Sent: 29 October 2013 09:42 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Rotary stage
On 29 October 2013 13:18, Stuart Stevenson
On 29 October 2013 13:18, Stuart Stevenson wrote:
> Here is a model of the worm and table using the curve in the previous iges
> file
>
> https://www.dropbox.com/s/vq62ky4lmmr1nnc/ballwormex1.igs
Unfortunately Alibre refuses to render any teeth on the wheel, and
AutoDesk Inventor crashes when try
Here is a model of the worm and table using the curve in the previous iges
file
https://www.dropbox.com/s/vq62ky4lmmr1nnc/ballwormex1.igs
On Mon, Oct 28, 2013 at 9:00 PM, Gene Heskett wrote:
> On Monday 28 October 2013 21:51:14 Kent A. Reed did opine:
>
> > On 10/28/2013 7:33 PM, Gene Heskett
On Monday 28 October 2013 21:51:14 Kent A. Reed did opine:
> On 10/28/2013 7:33 PM, Gene Heskett wrote:
> > <...>
> > What do I use to translate that .igs to a format I can view?
>
> Does the file contain a part model (e.g. 3D) or a drawing (e.g. 2D)?
>
> IGES Viewer (http://igsviewer.com/) is p
the part is a 3D model - points and a curve
On Mon, Oct 28, 2013 at 7:00 PM, Kent A. Reed wrote:
> On 10/28/2013 7:33 PM, Gene Heskett wrote:
> > <...>
> > What do I use to translate that .igs to a format I can view?
> >
> >
>
> Does the file contain a part model (e.g. 3D) or a drawing (e.g. 2D)
On 10/28/2013 7:33 PM, Gene Heskett wrote:
> <...>
> What do I use to translate that .igs to a format I can view?
>
>
Does the file contain a part model (e.g. 3D) or a drawing (e.g. 2D)?
IGES Viewer (http://igsviewer.com/) is pretty decent free 3D viewer but
it was written for MS Windows. I have
On Monday 28 October 2013 18:06:41 Stuart Stevenson did opine:
> Andy,
> Does this look ok?
>
> https://www.dropbox.com/s/0vzrepcbrmw44nw/ballworm.igs
>
> this is
>
> 5 inches from the center of table to the center of the ball
> 1 inch from the center of the worm to the center of the ball
> 90
Andy,
Does this look ok?
https://www.dropbox.com/s/0vzrepcbrmw44nw/ballworm.igs
this is
5 inches from the center of table to the center of the ball
1 inch from the center of the worm to the center of the ball
90 worm revolutions is one table revolution
any of the parameters can be changed
have
Look up double enveloping (AKA double throated) worm gear. I'd like to
see the machines made to cut those before any kind of NC or CNC was
available.
--
Android is increasing in popularity, but the open development platf
On Mon, Oct 28, 2013 at 11:53 AM, Steve Stallings wrote:
> With patents all that matters is the claims. Usually
> there is only one real claim and the rest of the
> "claims" are derivative of the first claim.
>
> In this case it looks like claim number one is very
> specific to a device that utili
; To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Rotary stage
>
> On 10/28/2013 08:41 AM, Stuart Stevenson wrote:
> > Do you have a design you can share? I would try to model it.
> >
> maybe of use
> from John Hopkins
> http://urobotics.urology.jhu.e
On 28 October 2013 14:33, Stuart Stevenson wrote:
> Are you engaging three ring gear teeth?
> Do you want a split nut for backlash adjustment?
I started off seeing if it was possible to engage a _lot_ of teeth.
The fact that the balls can be inserted later means that the normal
assembly problems
Are you engaging three ring gear teeth?
Do you want a split nut for backlash adjustment?
On Mon, Oct 28, 2013 at 9:01 AM, andy pugh wrote:
> On 28 October 2013 13:41, Stuart Stevenson wrote:
> > Do you have a design you can share? I would try to model it.
>
> The idea is stolen from:
> http:/
On 10/28/2013 08:41 AM, Stuart Stevenson wrote:
> Do you have a design you can share? I would try to model it.
>
maybe of use
from John Hopkins
http://urobotics.urology.jhu.edu/pub/2006-stoianovici-uspto-07051610.pdf
yeah its patented but you can make for for your own use cantcha?
regards
Tomp tjtr
On 28 October 2013 13:41, Stuart Stevenson wrote:
> Do you have a design you can share? I would try to model it.
The idea is stolen from:
http://urobotics.urology.jhu.edu/projects/BW/
(I hate to think what a urology department intends to do with a ball worm)
I was trying to model an enveloping v
Do you have a design you can share? I would try to model it.
On Oct 25, 2013 7:18 AM, "andy pugh" wrote:
> On 25 October 2013 08:15, Steve Blackmore wrote:
> > The newer Vertex ones are nowhere near as good as the older ones and
> > there are a lot of cheap copies out there too.
>
> I think that
On Thu, 2013-10-24 at 19:27 +0100, andy pugh wrote:
> On 24 October 2013 19:00, Tomaz T. wrote:
> > Does anyone here have any experience with chinese motorized rotary stages,
> > like this one:
> > http://www.alibaba.com/product-gs/615993083/LSDH_100WS_Worm_gear_motorized_rotary.html
>
> The max
On Fri, 25 Oct 2013 13:14:34 +0100, you wrote:
>On 25 October 2013 08:15, Steve Blackmore wrote:
>> The newer Vertex ones are nowhere near as good as the older ones and
>> there are a lot of cheap copies out there too.
>
>I think that mine is one of the cheap copies.
>http://www.cnczone.com/forum
On 25 October 2013 08:15, Steve Blackmore wrote:
> The newer Vertex ones are nowhere near as good as the older ones and
> there are a lot of cheap copies out there too.
I think that mine is one of the cheap copies.
http://www.cnczone.com/forums/general_metal_working_machines/172314-servo_computer
On Fri, 25 Oct 2013 07:54:00 +0200, you wrote:
>I can concur with Dave about the Vertex table. I found it to be very
>good and you can adjust the engagement of the worm gear. I know many
>guys that use them all with great results.
The newer Vertex ones are nowhere near as good as the older ones
I can concur with Dave about the Vertex table. I found it to be very
good and you can adjust the engagement of the worm gear. I know many
guys that use them all with great results.
On 2013/10/25 01:00 AM, Dave Caroline wrote:
> On 24/10/2013, Tomaz T. wrote:
>> Does anyone here have any experie
On 10/24/2013 06:50 PM, Tomaz T. wrote:
> This one has a bit more specs about accuracy... if I could trust them :I
> http://bjwn.en.alibaba.com/product/215200677-200438444/Motorized_Rotation_Stage.html
> On this rotary stage sizes is usually nema 17 frame size, so with 1:180 ratio
> I could expec
This one has a bit more specs about accuracy... if I could trust them :I
http://bjwn.en.alibaba.com/product/215200677-200438444/Motorized_Rotation_Stage.html
On this rotary stage sizes is usually nema 17 frame size, so with 1:180 ratio I
could expect minimum 40Nm of torque?Isn't usually there a "
On 24/10/2013, Tomaz T. wrote:
> Does anyone here have any experience with chinese motorized rotary stages,
> like this one:
> http://www.alibaba.com/product-gs/615993083/LSDH_100WS_Worm_gear_motorized_rotary.html
>
> I'm a bit worried about actual accuracy and amount of backlash. If it would
Tha
On 24 October 2013 19:00, Tomaz T. wrote:
> Does anyone here have any experience with chinese motorized rotary stages,
> like this one:
> http://www.alibaba.com/product-gs/615993083/LSDH_100WS_Worm_gear_motorized_rotary.html
The maximum static torque quoted sounds rather wrong.
> I'm a bit worr
Does anyone here have any experience with chinese motorized rotary stages, like
this one:
http://www.alibaba.com/product-gs/615993083/LSDH_100WS_Worm_gear_motorized_rotary.html
I'm a bit worried about actual accuracy and amount of backlash. If it would be
worth of buying it... anyway, is there a
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