On Tuesday 10 March 2020 20:03:53 Gene Heskett wrote:
> On Monday 09 March 2020 22:55:55 Gene Heskett wrote:
> > On Monday 17 February 2020 18:08:11 Gene Heskett wrote:
> > > On Monday 17 February 2020 16:57:36 Les Newell wrote:
> > > > They should be any multiple of the tooth spacing plus half a
On Monday 09 March 2020 22:55:55 Gene Heskett wrote:
> On Monday 17 February 2020 18:08:11 Gene Heskett wrote:
> > On Monday 17 February 2020 16:57:36 Les Newell wrote:
> > > They should be any multiple of the tooth spacing plus half a tooth
> > > spacing.
> > >
> > > Your tooth spacing (pi x diam
On Monday 17 February 2020 18:08:11 Gene Heskett wrote:
> On Monday 17 February 2020 16:57:36 Les Newell wrote:
> > They should be any multiple of the tooth spacing plus half a tooth
> > spacing.
> >
> > Your tooth spacing (pi x diameter) / number of teeth = 0.314"
> >
> > So the available spacing
On Tuesday 18 February 2020 12:05:31 Chris Albertson wrote:
> You all have missed the first and most important step. You have to
> first adust the sensor so that it gives a 50% duty cycle square wave
> at all speeds. With an inductive sensor and a fast-moving gear you
> might not get 50% from m
On Monday 17 February 2020 23:59:47 Jon Elson wrote:
> On 02/17/2020 03:20 PM, Gene Heskett wrote:
> > How far apart are they to be to output a good quadrature signal?
> >
> > Mounting them with JBKwik weld seems to be a lot less forgiving
> > because its not possible to move them a few thou to fi
On 02/18/2020 03:06 AM, Les Newell wrote:
Hi Jon,
Thinking about it, you're mostly right. I didn't think it
through. My suggested spacing assumes the teeth are
square, which of course they are not.
The actual spacing is going to depend on the sensing range
of the sensors and width of the tips
You all have missed the first and most important step. You have to first
adust the sensor so that it gives a 50% duty cycle square wave at all
speeds. With an inductive sensor and a fast-moving gear you might not get
50% from max speed to zero in both directions.
Only after you are getting a 50
Hi Jon,
Thinking about it, you're mostly right. I didn't think it through. My
suggested spacing assumes the teeth are square, which of course they are
not.
The actual spacing is going to depend on the sensing range of the
sensors and width of the tips of the teeth. 1/4 tooth spacing is likely
On 02/17/2020 03:57 PM, Les Newell wrote:
They should be any multiple of the tooth spacing plus half
a tooth spacing.
Nope, I made that mistake first time. It should be "plus
1/4 of a tooth space".
Jon
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On 02/17/2020 03:20 PM, Gene Heskett wrote:
How far apart are they to be to output a good quadrature signal?
Mounting them with JBKwik weld seems to be a lot less forgiving because
its not possible to move them a few thou to fine tune like it was when
using relatively flexible goop.
Well, one
On Monday 17 February 2020 17:44:01 Sam Sokolik wrote:
> I cadded them up.. The slots in the bracket was enough to get decent
> quadrature
>
> http://electronicsam.com/images/greenmachine/20190401_145539.jpg
Maybe I'm dumb but the gear teeth move across the face, not the end. The
index is turne
On Monday 17 February 2020 16:57:36 Les Newell wrote:
> They should be any multiple of the tooth spacing plus half a tooth
> spacing.
>
> Your tooth spacing (pi x diameter) / number of teeth = 0.314"
>
> So the available spacings between the sensor are:
>
> (0.314 x 0) + (0.314 / 2) = 0.157
>
> (0
February-17-20 2:44 PM
> > To: Enhanced Machine Controller (EMC)
> > Subject: Re: [Emc-users] Got my new ATS-667's today, but thats a math
> > connundrum for me.
> >
> > I cadded them up.. The slots in the bracket was enough to get decent
> > quadrature
> >
>
Nice work!
> -Original Message-
> From: Sam Sokolik [mailto:samco...@gmail.com]
> Sent: February-17-20 2:44 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Got my new ATS-667's today, but thats a math
> connundrum for me.
>
> I cadde
I cadded them up.. The slots in the bracket was enough to get decent
quadrature
http://electronicsam.com/images/greenmachine/20190401_145539.jpg
On Mon, Feb 17, 2020, 3:59 PM Les Newell wrote:
> They should be any multiple of the tooth spacing plus half a tooth spacing.
>
> Your tooth spacing
They should be any multiple of the tooth spacing plus half a tooth spacing.
Your tooth spacing (pi x diameter) / number of teeth = 0.314"
So the available spacings between the sensor are:
(0.314 x 0) + (0.314 / 2) = 0.157
(0.314 x 1) + (0.314 / 2) = 0.471
and so on...
You won't get a perfec
Greetings all;
Given that the bull gear in this lathe is exactly 6" in diameter at the
outer face of the teeth;
Given that it has 60 teeth;
Given that the ATS-667's are mounted so as to clear the teeth by about 10
to 15 thou and they are slightly thicker than 5/32" inch. That would
add about
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