How would that be done in the HAL file?
And BTW, Peter could probably explain why but when I bumped the RPM up to
100 and then looked at the velocity output and it mirrored the 1 RPM
velocity profile. Just at higher rate.I'm guessing that even though the
HAL rate is 1mS inside the MESA it's
Would you ever be tapping that slow? If you are - then yes - higher
resolution or try interpolation.. (Will that be bad in rigid tapping
reversals? Threading on a lathe interpolation works great - but that is
one direction...). The green machine had a gear tooth encoder - about 40
ish teeth.
I think with encoders that are not symmetric 50/50, you need to look only at
the leading edges. (Or only at the trailing edges)
Yes,this cuts the resulution in half but removes the nose.I think for
somethig with a lot of rotational inertia, like a spindle, you can use
interpolation to get
On 8/14/23 20:18, John Dammeyer wrote:
Hi Gene,
It's why I'm filtering. And yes. I agree, at this slow a speed I suspect
what I will find is two different velocities reported from edge to edge.
I'm guessing when the speed is fast (small gap) then a faster than required
distance/vel is
On Mon, 14 Aug 2023, John Dammeyer wrote:
Date: Mon, 14 Aug 2023 16:36:16 -0700
From: John Dammeyer
Reply-To: "Enhanced Machine Controller (EMC)"
To: "'Enhanced Machine Controller (EMC)'"
Subject: Re: [Emc-users] Rigid tapping
Hi Andy,
I don't know. How can I tell? The encoder is
Hi Gene,
It's why I'm filtering. And yes. I agree, at this slow a speed I suspect
what I will find is two different velocities reported from edge to edge.
I'm guessing when the speed is fast (small gap) then a faster than required
distance/vel is implemented. Then on the next wider pulse it's
Hi Andy,
I don't know. How can I tell? The encoder is connected to the MESA 7i92H and
according to my documentation is noisy so needs to be filtered. In either case
it looks like the MESA board is providing Velocity and Position. I'd make a
guess that based on its own internal clock it
On 8/14/23 15:53, John Dammeyer wrote:
This thread has some good information about this
https://sourceforge.net/p/emc/mailman/message/34363029/
For interest sake I set my mill up to turn 1 RPS with my 60 tooth
non-symmetrical encoder (4mm slots, 2.5mm teeth) and then ran the power
tapping
On Mon, 14 Aug 2023 at 20:57, John Dammeyer wrote:
> What I found is that it moved in short spurts.
Are you using straight encoder position, or position-interpolated?
(this might not be an option depending on what is counting the encoder
pulses)
--
atp
"A motorcycle is a bicycle with a
This thread has some good information about this
https://sourceforge.net/p/emc/mailman/message/34363029/
For interest sake I set my mill up to turn 1 RPS with my 60 tooth
non-symmetrical encoder (4mm slots, 2.5mm teeth) and then ran the power
tapping G-Code to see what the knee Z axis would
I don't recall if I finished off this thread with a report on the results.
Here's a photo of how it worked out. I connected the encoder to a
dsPIC33ch128mp504 which was on a PIM installed into the Microchip Explorer
16 development board. I used my ELS to run the motor and encoder pulses
were
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