On Thursday 18 June 2020 17:31:52 marcus.bow...@visible.eclipse.co.uk
wrote:
> Gene,
>
> Have you looked at www.gearotic.com
> or did someone mention that already?
>
> Marcus
No. I downloaded it, but its a winders.exe and I don't have a huge choice
of winderz stuff installed. So whats it need
On Thursday 18 June 2020 17:24:56 N wrote:
> If remember correctly something about involute gear used in a gear
> pump, you need the equation for the geometry?
Not at the moment Nick. I think I solved that problem with a teeny peristaltic
pump and a couple of timers rigged to be variable excitat
Gene,
Have you looked at www.gearotic.com
or did someone mention that already?
Marcus
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If remember correctly something about involute gear used in a gear pump, you
need the equation for the geometry?
> Greeting all;
>
> 3d Printer is working and actually making solid parts, now I need to make
> a couple gears. with enough muscle to drive this BS-1 clone.
>
> There's a parametric
On Thu, 18 Jun 2020 at 06:43, Gregg Eshelman via Emc-users
wrote:
>
> It's Metric gearing's version of 14 DP, for which you don't want to have to
> come up with replacement gears.
I can make 14DP gears. (https://youtu.be/xdE46yvckbM)
--
atp
"A motorcycle is a bicycle with a pandemonium attac
On Thu, 18 Jun 2020 at 07:35, Chris Albertson wrote:
>
> In the US, the traditional system uses teeth per inch.
The Inch version of Module is not circular pitch, it is DP, Diametral Pitch.
And the calculations are just as easy in that system, you just divide
rather than multiply.
In your exampl
On Thursday 18 June 2020 02:32:24 Chris Albertson wrote:
> In the US, the traditional system uses teeth per inch. but the problem
> with this system is "where do you place the tape measure?" The answer
> is NOT around the outside of the gear. You need to place the tape
> such that it runs insid
In the US, the traditional system uses teeth per inch. but the problem with
this system is "where do you place the tape measure?" The answer is NOT
around the outside of the gear. You need to place the tape such that it
runs inside the teeth. this is hard to do. Also here is a quiz:You
have
Module is the Metric version of gear pitch. A google for module gear chart will
tell you everything you need to know. There are also module <> diametral pitch
converters online in case you're using gear design software that only does Mod
or DP but does allow input of arbitrary numbers.
My you
I still say you guys need to print gears on an MSLA resin printer using
a dense high durometer polyurethane structural resin. They'd not only
look like high quality injection molded parts, they'd be as strong as
injection molded parts. Email me an STL and a USPS mailing address and
I'll see what
The theory with printed gears is that with helical gears there is more
material in contact so the stress on the teeth is reduced and that for
plastic we need this extra strength. But what I found is that teeth never
fail. The hubs fail first.
The better reason for helical gears is that they are
On Wednesday 17 June 2020 22:28:22 andy pugh wrote:
> On Thu, 18 Jun 2020 at 03:04, Gene Heskett
wrote:
> > > Note, these are a daft idea. But I have actually seen a 9 foot
> > > diameter triple helical in my dad's old workplace. He did need to
> > > explain to me why it was silly, and why they
On Wednesday 17 June 2020 22:10:02 Chris Albertson wrote:
> Go to McMaster Carr and find a stock gear you like. If they don't
> have one you like then Grainger, SPD/SI or Boston Gear will
>
> All those sites allow you to download a CAD file of the stock gear.
> Of the CAD file types "step" (or "
On Wednesday 17 June 2020 22:23:23 Chris Albertson wrote:
> You can make a double-helical by downloading a left and a right
> helical and sticking them together. You do not even need to know what
> "involute" means as you just cut and past from McMaster Carr. Just
> keep faith that they know how
On Thu, 18 Jun 2020 at 03:04, Gene Heskett wrote:
> > Note, these are a daft idea. But I have actually seen a 9 foot
> > diameter triple helical in my dad's old workplace. He did need to
> > explain to me why it was silly, and why they refused to replace it and
> > specced a double instead.
>
> T
You can make a double-helical by downloading a left and a right helical and
sticking them together. You do not even need to know what "involute" means
as you just cut and past from McMaster Carr. Just keep faith that they know
how to design exotic stuff like spiral bevels, they do.
Designing gear
Go to McMaster Carr and find a stock gear you like. If they don't have one
you like then Grainger, SPD/SI or Boston Gear will
All those sites allow you to download a CAD file of the stock gear. Of the
CAD file types "step" (or ".stp") is the most universal.
Then you use your CAD software to mod
On Wednesday 17 June 2020 21:41:07 andy pugh wrote:
> On Thu, 18 Jun 2020 at 02:23, Gene Heskett
wrote:
> > There's a parametric gear thing I have but its a sample of many gear
> > styles and I don't know how to cut it apart and use just the
> > external spur piece of it. I need something that o
On Thu, 18 Jun 2020 at 02:23, Gene Heskett wrote:
> There's a parametric gear thing I have but its a sample of many gear
> styles and I don't know how to cut it apart and use just the external
> spur piece of it. I need something that openscad can handle.
You could take OpensCAD out of the loop,
Greeting all;
3d Printer is working and actually making solid parts, now I need to make
a couple gears. with enough muscle to drive this BS-1 clone.
There's a parametric gear thing I have but its a sample of many gear
styles and I don't know how to cut it apart and use just the external
spur p
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