Slavko,
Thanks for the schematic! That is an elegant solution, in lieu of a
built-in software routine. Could you explain how you are controlling the
on/off of the PASS2HOME relay from EMC2? Or are you doing it manually?
Using a pushbutton is a good safety feature. Another idea might be to
2010/4/25 d...@umich.edu
Slavko,
Thanks for the schematic! That is an elegant solution, in lieu of a
built-in software routine. Could you explain how you are controlling the
on/off of the PASS2HOME relay from EMC2? Or are you doing it manually?
Using a pushbutton is a good safety feature.
d...@umich.edu pravi:
Hi Cliff,
I am glad to see you are thinking about the homing of tandem motors on
an axis. I plan to make a 4' x 6' table with tandem X axis motors. I
think this functionality will attract many people with gantry mills to EMC2.
How about this sequence:
1. Move both
during homing).
Regards,
Alex
- Original Message -
From: Cliff Blackburn cblackb...@powertechrepairs.com
To: emc-developers@lists.sourceforge.net
Sent: Tuesday, April 20, 2010 10:11 AM
Subject: [Emc-developers] Coordinated Gantry Homing by Linked Joints
I started
@lists.sourceforge.net
Subject: Re: [Emc-developers] Coordinated Gantry Homing by Linked Joints
Isn't the separate homing of linked joints needed to remove any
misalignment in them? If you just want to do same speed and same
acceleration to them,
you might just connect control wires to both motors from
On Wed, 21 Apr 2010 11:27 -0700, dave dengv...@charter.net wrote:
Taking this a half-step further ...
a. hold position on master side of gantry
b. while monitoring a strain gage on the cross member minimize strain.
c. sync sides
d. home using master side.
Not
- Original Message -
From: Cliff Blackburn cblackb...@powertechrepairs.com
To: emc-developers@lists.sourceforge.net
Sent: Tuesday, April 20, 2010 10:11 AM
Subject: [Emc-developers] Coordinated Gantry Homing by Linked Joints
I started working on a modification to homing.c so you can home a gantry
: Cliff Blackburn cblackb...@powertechrepairs.com
To: emc-developers@lists.sourceforge.net
Sent: Tuesday, April 20, 2010 10:11 AM
Subject: [Emc-developers] Coordinated Gantry Homing by Linked Joints
I started working on a modification to homing.c so you can home a gantry
style machine properly
Sent: Tuesday, April 20, 2010 10:11 AM
Subject: [Emc-developers] Coordinated Gantry Homing by Linked Joints
I started working on a modification to homing.c so you can home a gantry
style machine properly I have started working on it but have more work
before i find how many bugs I
Here I'm not understand what in reality is problem?!?
Well I don't have gantry machine but as I observe my machine the gantry
can be homed in same way.
So if I assume the AXIS_0 and AXIS_1 are the gantry then user just must
use same parameters for homing speeds and types and
HOME_SEQUENCE to
Main problem seems to be that you need to make sure you don't increase skew
between linked axis while homing or working.
Hoping that it's small enough and machine can cope with it could be
expensive.
Second problem, it should still look as one axis to interpreter and gui.
Alex.
20.04.2010
20.04.2010 18:07, Slavko Kocjancic пишет:
Alexey Starikovskiy pravi:
Main problem seems to be that you need to make sure you don't increase skew
between linked axis while homing or working.
Just that.! The homing as is doesn't increase the skew (if parameters
are correct)
Alexey Starikovskiy pravi:
20.04.2010 18:07, Slavko Kocjancic пишет:
Alexey Starikovskiy pravi:
Main problem seems to be that you need to make sure you don't increase skew
between linked axis while homing or working.
Just that.! The homing as is doesn't increase
On Tue, 20 Apr 2010, Alexey Starikovskiy wrote:
Date: Tue, 20 Apr 2010 13:46:41 +0400
From: Alexey Starikovskiy aysta...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Coordinated Gantry Homing
Gantry Homing by Linked Joints
On Tue, 20 Apr 2010, Alexey Starikovskiy wrote:
Date: Tue, 20 Apr 2010 13:46:41 +0400
From: Alexey Starikovskiy aysta...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers
20.04.2010 19:30, Peter C. Wallace пишет:
(Syncing on index of course assuming you could not easily rack the gantry
1/2 a leadscrew turn)
There is a much bigger assumption -- you are running servos, they have
index,
index is routed in, and index offset between motors is known beforehand.
Gantry Homing by Linked Joints
20.04.2010 19:30, Peter C. Wallace ??:
(Syncing on index of course assuming you could not easily rack the gantry
1/2 a leadscrew turn)
There is a much bigger assumption -- you are running servos, they have
index,
index is routed in, and index offset between
2010/4/20 Slavko Kocjancic esla...@gmail.com
Alexey Starikovskiy pravi:
20.04.2010 18:07, Slavko Kocjancic пишет:
Alexey Starikovskiy pravi:
Main problem seems to be that you need to make sure you don't increase
skew
between linked axis while homing or working.
Just that.!
Hello,
from my understaning of EMC2 code this problem is another
manifestation of axes/joints difference. Home switch is on joint, home
position is probably considered in cartesian (axis) space. Not all
joint coordinates are vadid. And homing should somehow avoid theese
invalid positions.
Maybe
2010/4/20 Cliff Blackburn cblackb...@powertechrepairs.com
The only thing this would really change is stopping the gantry from
skewing it's self any worse while homing. What would happen with homing
right now if one of your home switches wasn't working? One joint would stop
and the other
To: emc-developers@lists.sourceforge.net
Sent: Tuesday, April 20, 2010 10:11 AM
Subject: [Emc-developers] Coordinated Gantry Homing by Linked Joints
I started working on a modification to homing.c so you can home a gantry
style machine properly I have started working on it but have
Gentlemen,
The schemes I have seen to confirm home switch functionality is to inhibit
homing if the homing switch is not made and to have a maximum axis departure
during the homing cycle.
thanks
Stuart
--
dos centavos
: [Emc-developers] Coordinated Gantry Homing by Linked Joints
I started working on a modification to homing.c so you can home a gantry
style machine properly I have started working on it but have more work
before i find how many bugs I created in the process. It adds a option
to link 2
Slavko Kocjancic wrote:
2010/4/20 Cliff Blackburn cblackb...@powertechrepairs.com
mailto:cblackb...@powertechrepairs.com
The only thing this would really change is stopping the gantry
from skewing it's self any worse while homing. What would happen
with homing right now if one
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