Re: [Emc-users] Encoders

[jeremy youngs]

>
> No Index??? Seems like it would be handy.


It appears to have an index slot in the glass plate , but not enough wires
樂樂樂


OTOH, for XYZ, not a hard and
> fast requirement as long as the home switches are good.


I have 5 of those inductive pickups we were talking about a few months
back, I think Greg or Chris brought them to our attention , so we will find
out.

But you'll need
> it on the spindle. In fact, the index is the only thing that must be
> tied to the spindle if you ever want to do rigid tapping.
> I'm gonna put one of thousands cui encoders on it, I left this renco on
> the ametek as I'm just plain lazy and figured with the home switches it
> wasn't absolutely essential to have index.
>
Also without this new motor in hand I have no idea how it is equipped ,
hopefully it already has a nice encoder on it 

>
> The rest of the encoder (a/b signals) can be on the motor, and you can
> calibrate the scale for the spindle with some hal stuff you can comment
> back out of the hal file once the scale has been determined. Thats how I
> did mine anyway. Works a treat.
>

I'm sure I will have questions for this.

>
> > Finally, something that didn't fight me tooth and nail.
>
> > Now I have to put an encoder on the z motor and wait for brown to drop
> > this 6hp spindle motor off and see what I need for that, I have 2
> > drives coming for that and a bid on a power supply for the drives so
> > life is well at this time.
>
> Sounds good. How much weight do have to man handle on the Z?
>
This motor ships at 50 lbs it's a knee mill , however it only has freedom
of movement along the x axis , I hope to turn this later with a harmonic
drive

>
> > Ttyl take care fellas
>
> We try. I've got the tap hat g-code working well, but ran out of M6 grub
> screws, so I just ordered another 100 M6's and 100 M8's for the biggest
> taps, which should run me out of brass before I run out of taps to
> mount. So sometime after the screws get here, I should order another 6
> feet of 7/8" brass rod.  And a decent set of letter drills, these are
> only slightly better than cold butter. Even running each one thru one of
> the original drill doctors isn't enough to drill clean in one pass. In
> brass.
>
> Good to hear you're making progress as well.
> --
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
>
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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Re: [Emc-users] Encoders

[Gene Heskett]

On Sunday 03 June 2018 22:31:32 jeremy youngs wrote:

> Update, I pulled this other ametek motor apart. And it had a glass
> disc encoder, only 4 wires and clearly labeled a,b,5, gnd , so no
> blown opto when I hooked it up. The glass disc said 1000 on it so I'm
> presuming it's a 1000 PPR encoder, I will check part numbers tomorrow
> . Hooked it to 7i90 and it just works.

No Index??? Seems like it would be handy. OTOH, for XYZ, not a hard and 
fast requirement as long as the home switches are good. But you'll need 
it on the spindle. In fact, the index is the only thing that must be 
tied to the spindle if you ever want to do rigid tapping.

The rest of the encoder (a/b signals) can be on the motor, and you can 
calibrate the scale for the spindle with some hal stuff you can comment 
back out of the hal file once the scale has been determined. Thats how I 
did mine anyway. Works a treat.

> Finally, something that didn't fight me tooth and nail.

> Now I have to put an encoder on the z motor and wait for brown to drop
> this 6hp spindle motor off and see what I need for that, I have 2
> drives coming for that and a bid on a power supply for the drives so
> life is well at this time.

Sounds good. How much weight do have to man handle on the Z?

> Ttyl take care fellas

We try. I've got the tap hat g-code working well, but ran out of M6 grub 
screws, so I just ordered another 100 M6's and 100 M8's for the biggest 
taps, which should run me out of brass before I run out of taps to 
mount. So sometime after the screws get here, I should order another 6 
feet of 7/8" brass rod.  And a decent set of letter drills, these are 
only slightly better than cold butter. Even running each one thru one of 
the original drill doctors isn't enough to drill clean in one pass. In 
brass.

-- 
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

--
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Re: [Emc-users] Encoders

[jeremy youngs]

Update, I pulled this other ametek motor apart. And it had a glass disc
encoder, only 4 wires and clearly labeled a,b,5, gnd , so no blown opto
when I hooked it up. The glass disc said 1000 on it so I'm presuming it's a
1000 PPR encoder, I will check part numbers tomorrow . Hooked it to 7i90
and it just works.
Finally, something that didn't fight me tooth and nail.
Now I have to put an encoder on the z motor and wait for brown to drop this
6hp spindle motor off and see what I need for that, I have 2 drives coming
for that and a bid on a power supply for the drives so life is well at this
time.
Ttyl take care fellas
--
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engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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