Send me the photos then. I'll create a folder on my web site for these.
John
> -Original Message-
> From: gene heskett [mailto:ghesk...@shentel.net]
> Sent: December-17-21 9:15 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Harmonic Drive
>
> On Friday, December 1
On Friday, December 17, 2021 11:39:00 PM EST John Dammeyer wrote:
> Gene,
> I've found the forum doesn't allow through more than about 135K. Which is
> why I've been posting links to the bigger ones on my web site. There are
> lots of photo box sites for this sort of thing.
And 95% of them are
Gene,
I've found the forum doesn't allow through more than about 135K. Which is why
I've been posting links to the bigger ones on my web site.
There are lots of photo box sites for this sort of thing. A picture is really
worth 1000 words or more.
John
> > Seemed and ideal size for a bearing
On Friday, December 17, 2021 8:43:37 PM EST John Dammeyer wrote:
> Alright. So it spins really freely but keeping the planetary cluster
> centred is a bit of an issue. So the attached photo shows roughly (very
> roughly) what I had in mind.
>
> With the right coupler between the motor and the ge
Hmm - seems we are making things a bit more complicated than they need to
be.. Why didn't the simple flex gear work ok? You need to make the
system with fine enough splines that the flexure is at a minimum...You
can lower the backlash to a minimum by applying a small amount of
pressure to th
Alright. So it spins really freely but keeping the planetary cluster centred
is a bit of an issue. So the attached photo shows roughly (very roughly) what
I had in mind.
With the right coupler between the motor and the gear cluster the planetary
assembly should stay in the same place. There
On Friday, December 17, 2021 7:11:42 PM EST John Dammeyer wrote:
> And now with the 40T and 41T labels on each gear it was possible to spin
> them on the mount so they were all in the same orientation and I then
> constrained one mount hole on each. Then repositioned the teeth and the
> two rings.
And now with the 40T and 41T labels on each gear it was possible to spin them
on the mount so they were all in the same orientation and I then constrained
one mount hole on each. Then repositioned the teeth and the two rings. Now
they all match back and front.
Have not yet figured out how to
Here are screen shots of my drawings as imported from the FreeCAD STEP files.
The first thing I did to them is add a pattern of 3 holes evenly spaced 120
degrees apart. When I redo these I'll go from an equilateral triangle to a
form that only allows one way to screw them together. Then it w
Todd,
More after the paint on the screw heads dries.
http://www.autoartisans.com/harmonicdrive/GearSide3.jpg
I hadn't tried that particular orientation of Tooth #1. But as you can see,
within the limits of 3D printing my 3 alignment screw holes are designed along
with the concentric center bo
On Fri, 17 Dec 2021 at 15:27, Todd Zuercher wrote:
>
> Andy, Initially I thought what you are saying about the pitch diameters
> needing to be the same was true. And that would be the case if all the
> pinions had the same tooth count and size. But When I was modeling it I
> found that if all
On Friday, December 17, 2021 3:02:19 AM EST John Dammeyer wrote:
> Gene,
> You were asking for a photo of front and back. I put them here because they
> are too large to attach to an email.
> http://www.autoartisans.com/harmonicdrive/GearSide1.jpg
> http://www.autoartisans.com/harmonicdrive/GearSi
On Fri, 17 Dec 2021 at 08:06, John Dammeyer wrote:
> Add the second though and there doesn't seem to be any clear position where
> the second just drops down onto the secondary planet gears. It's always a
> force fit. Either there's a key where it can go together just so perfectly
> or it's
On Thu, 16 Dec 2021 at 07:57, John Dammeyer wrote:
> The AlibreCAM Gear generator doesn't accept module. Instead it wants number
> of teeth and pitch diameter.
> So I whipped up a spreadsheet that converts say the module 1.25 that Todd
> used and chose 19 teeth for the sun gear. That appears
Gene,
You were asking for a photo of front and back. I put them here because they
are too large to attach to an email.
http://www.autoartisans.com/harmonicdrive/GearSide1.jpg
http://www.autoartisans.com/harmonicdrive/GearSide2.jpg
Notice how the blue and green ring gears are offset. No matter w
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