Andy had sent these to me years ago and I finally figured out why I
couldn't get them to work.
(Granted the ones that pico systems and mesa sell are better.)
https://youtu.be/xoHajQaHcOU
Wiki here...
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ResolverToQuadratureConverter
Broke the first cup. It's possible that a few times I didn't insert it right
because the holes didn't line up well so I might well have begun the crack
which then escalated. If it's inserted off axis it's hard to get it into
position and if it even turns is very rough. Get it right and it's
I have seen that video too! I watch too much youtube.. It doesn't really
look that strong..mine stalled at 35ftlb or 47.45Nm
Oh - I am officially a thingiverser...
https://www.thingiverse.com/thing:5151905
On Wed, Dec 1, 2021 at 10:24 PM Chris Albertson
wrote:
> The Step file I sent
The Step file I sent is fully functional when imported to Fusion360.
There are a few changes I would make too. If the problem is the cup
flexing, Maybe try some accordion pleats, a few broad sine-like curves in
the cup. Why are the wals cylindrical?
Another idea is to remove the bottom from
Sam,
This guy in the video claims he developed the dual cup belt drive system. I
don't believe him but I am curious where it came from. He's supplied CAD
readable parts and stl. But he's also using involute form so I somehow think
he didn't design it but is taking credit.
Gene Heskett
> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: December-01-21 4:43 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Harmonic Drive
>
> still a 404
>
>
> On Wed, 1 Dec, 2021 at 7:21 PM, John Dammeyer wrote:
>
>
> To:
Lol - both work here.
On Wed, Dec 1, 2021 at 6:43 PM Gene Heskett wrote:
> still a 404
>
>
> On Wed, 1 Dec, 2021 at 7:21 PM, John Dammeyer
> wrote:
>
>
> To: 'enhanced machine controller (emc)'
> Try it again. Should be there now. Timing I think...
>
> Also take a look at
>
still a 404
On Wed, 1 Dec, 2021 at 7:21 PM, John Dammeyer wrote:
To: 'enhanced machine controller (emc)'
Try it again. Should be there now. Timing I think...
Also take a look at
www.autoartisans.com/harmonicdrive/HarmonicDrive-9.jpg
and so is this.
Shows that the teeth are not quite
Try it again. Should be there now. Timing I think...
Also take a look at
www.autoartisans.com/harmonicdrive/HarmonicDrive-9.jpg
Shows that the teeth are not quite straight but have a slight arc to them. The
bottom of the teeth are rounded to avoid hard points. This is the part as
provided
On Wed, 1 Dec, 2021 at 6:55 PM, John Dammeyer wrote:
To: 'enhanced machine controller (emc)'
Here's one of the things I would change on this project.
www.autoartisans.com/harmonicdrive/HarmonicDrive-10.jpg
404 here
The cavity is for the same sort of 16mm bearing with either a 6mm or 6.35mm
On Wed, 1 Dec, 2021 at 6:25 PM, Sam Sokolik wrote:
To: enhanced machine controller (emc)
Huh. I have printed probably half a roll so far.. (it is an ender 3 pro -
from maybe a year ago)
Thats about a year newer than mine. They announced the Pro V2 while my Pro was
on a
ups truck. Story
Here's one of the things I would change on this project.
www.autoartisans.com/harmonicdrive/HarmonicDrive-10.jpg
The cavity is for the same sort of 16mm bearing with either a 6mm or 6.35mm
hole. Instead of 4 nuts a nut plate a 10mm hole. A rod attached to the wave
generator disk slips into
Hi Gene,
Thanks for that feedback.
> I gave making cups up, they always broke, sometimes at the bottom of the
> splines but usually at the corner junction of the output
> disk and the bottom of the cup. Even in PETG.
>
>
> Additional fillets on the inside of that corner just moved the breakage
Chris sent me a zip with the project step file. This one I was able to load
and save. The individual part files were not editable.
However, once I saved that imported step file as the entire assembly AlibreCAD
saved it as a series of assemblies and part files; 88 in all including the
Huh. I have printed probably half a roll so far.. (it is an ender 3 pro -
from maybe a year ago)
On Wed, Dec 1, 2021 at 5:21 PM Gene Heskett wrote:
> On Wed, 1 Dec, 2021 at 6:10 PM, Sam Sokolik wrote:
>
>
> To: enhanced machine controller (emc)
> [...]
> My ender 3 seem to print petg ok...
>
On Wed, 1 Dec, 2021 at 6:10 PM, Sam Sokolik wrote:
To: enhanced machine controller (emc)
[...]
My ender 3 seem to print petg ok...
It will, for several parts, but it will start leaking hot plastic above the hot
block
eventually as the bowden tube slowly evaporates from the 240C or higher
On Wed, 1 Dec, 2021 at 5:51 PM, John Dammeyer wrote:
To: 'enhanced machine controller (emc)'
>How about. Now it works. I can load the assembly but the embedded read only
>characteristic is just plain rude. So the work around with Alibre is as
>follows:
Import the .step file.
>Select
My ender 3 seem to print petg ok...
On Wed, Dec 1, 2021, 5:02 PM Gene Heskett wrote:
> On Wed, 1 Dec, 2021 at 5:21 PM, John Dammeyer
> wrote:
>
>
> To: 'enhanced machine controller (emc)'
> >As it turns out I have something called Molykote 111 compound used for
> lubricating
> >the rotating
If it is too much work, ask me and I will re-export the entire model from
Fusion360 to STEP, and I'm sure there will be no read-only as Fusion360
does not do that.
I also want to re-organize it, like at least placing all the nuts and
screws in a "hardware" component so that can all be turned off
On Wed, 1 Dec, 2021 at 5:21 PM, John Dammeyer wrote:
To: 'enhanced machine controller (emc)'
>As it turns out I have something called Molykote 111 compound used for
>lubricating
>the rotating valve for the Rocket Espresso Machine. Had to buy a large tube
>for a once
>every 6 month cleaning
How about. Now it works. I can load the assembly but the embedded read only
characteristic is just plain rude. So the work around with Alibre is as
follows:
Import the .step file.
Select one of the elements like "Housing" and right click to open in separate
window.
Doesn't matter what
As it turns out I have something called Molykote 111 compound used for
lubricating the rotating valve for the Rocket Espresso Machine. Had to buy a
large tube for a once every 6 month cleaning and still have lots left.
Definitely food grade since it's in the hot water path. Should work
How odd. All I got on that step file link was 404 not found. Sent from my
Samsung S10
Original message From: Chris Albertson
Date: 2021-12-01 1:22 p.m. (GMT-08:00) To:
"Enhanced Machine Controller (EMC)" Subject:
Re: [Emc-users] Harmonic Drive Thanks for the link. But I
The problem (I think) is that you want to deform the plastic as little as
possible. That is why I went with smaller teeth... (and no cup)
sam
On Wed, Dec 1, 2021 at 3:22 PM Chris Albertson
wrote:
> Thanks for the link. But I noticed there was a STEP file provided. I've
> imported it into
Thanks for the link. But I noticed there was a STEP file provided. I've
imported it into Fusion360. It imports well. No need to convert the STL
files.
Here is a view-only public link to the Fusion360 model.
https://a360.co/3phrfI6
I've made no edits to the above. simply did the import.
The
The best stuff is PTFE based, "Superlube" for $5 on Amazon. This is a
"food-grade" lube which means it is ok to use on food prep equipment (not
to eat) and is non-reactive. It is what "everyone" recommends for 3D
printed gearboxes.
amazon.com/Super-Lube-21030-Synthetic-Grease
its might, but being an animal fat will go rancid pretty fast. crisco keeps 3
days short of
forever. I don't use a lot of it in my cooking, so the lb can I have is like 6
or 8 years old.
Take care John.
___
Emc-users mailing list
Would lard work?
https://en.wikipedia.org/wiki/Lard
> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: December-01-21 9:21 AM
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users] to JD
>
> I'll also add some white lithium grease and then run it for a
Chris,
This was my starting point. The step files aren't available in that link. The
STLs have been converted although some badly. Still working on getting better
step files from STL.
I'll also add some white lithium grease and then run it for a number of hours.
I suspect ,
That petroleum based grease will craze the plastic, Sam. You need a vegetable
based grease or oil, crisco is cheaper than the "special" stuff for plastic,
which I've used on the bb's in miine.
OTOH
John,
Looks like I'm finding this thread late. Where are the design files for
this harmonic drive?
On Tue, Nov 30, 2021 at 11:22 PM John Dammeyer
wrote:
> I've added a photo.
> www.autoartisans.com/harmonicdrive/HarmonicDrive-8.jpg
>
> The new wave generator pieces puts the bearings 1mm
there's a user in Japan, Mr AkiraHitosi
who has some nice videos using CamPy and CamView
but I noticed he was using steppers with linear scales ( magnetic)
https://www.youtube.com/watch?v=G6ZcdvOgX1s
afaict...
google xl8 says
"
A USB camera is attached to the NC router frame using
I popped it apart so I could measure the bearings (couldn't remember the
size). It looks quite good still considering the torque testing and
stuff...
https://photos.app.goo.gl/6DcMdFQp98aTvbQi8
https://photos.app.goo.gl/cDcRrPErWqH4c8gV7
sam
On Wed, Dec 1, 2021 at 1:22 AM John Dammeyer
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