Re: [Emc-users] making post square.

2022-12-10 Thread gene heskett
On 12/10/22 04:48, andy pugh wrote: On Sun, 12 Dec 2021 at 11:12, Gene Heskett wrote: I need access to the Z position that is G53 referenced as I need the absolute position on the post assuming the home switch abut 40 thou below the top is at 0.0. "Matrixkins" was just added to Master,

Re: [Emc-users] making post square.

2022-12-10 Thread andy pugh
On Sun, 12 Dec 2021 at 11:12, Gene Heskett wrote: > > I need access to the Z position that is G53 referenced as I need the > absolute > position on the post assuming the home switch abut 40 thou below the top > is at 0.0. "Matrixkins" was just added to Master, this allows you to correct th

Re: [Emc-users] making post square.

2021-12-12 Thread Gene Heskett
On Sun, 12 Dec, 2021 at 4:26 PM, Chris Albertson wrote: To: enhanced machine controller (emc) On Sun, Dec 12, 2021 at 12:39 PM Gene Heskett mailto:ghesk...@shentel.net>> wrote: > On Sun, 12 Dec, 2021 at 2:54 PM, Chris Albertson < > albertson.ch...@gmail.com>

Re: [Emc-users] making post square.

2021-12-12 Thread Chris Albertson
On Sun, Dec 12, 2021 at 12:39 PM Gene Heskett wrote: > On Sun, 12 Dec, 2021 at 2:54 PM, Chris Albertson < > albertson.ch...@gmail.com> wrote: > > > To: enhanced machine controller (emc) > I'm surprised that people don't use kinematics to remove the residual > alignment errors that can't be mechan

Re: [Emc-users] making post square.

2021-12-12 Thread Gene Heskett
On Sun, 12 Dec, 2021 at 2:54 PM, Chris Albertson wrote: To: enhanced machine controller (emc) I'm surprised that people don't use kinematics to remove the residual alignment errors that can't be mechanically removed. Of course, you can't remove tool orientation errors this way. If the z-ax

Re: [Emc-users] making post square.

2021-12-12 Thread Andy Pugh
> On 12 Dec 2021, at 19:55, Chris Albertson wrote: > > I'm surprised that people don't use kinematics to remove the residual > alignment errors There is millions: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ContributedComponents ___ Emc-users mailin

Re: [Emc-users] making post square.

2021-12-12 Thread Chris Albertson
I'm surprised that people don't use kinematics to remove the residual alignment errors that can't be mechanically removed. Of course, you can't remove tool orientation errors this way. If the z-axis is a few milliradians "off" the tool will also be "off" but kinematics can compensate for the X,

Re: [Emc-users] making post square.

2021-12-12 Thread Gene Heskett
On Sun, 12 Dec, 2021 at 12:13 PM, Chris Albertson wrote: To: enhanced machine controller (emc) Would "non-trivial kinematics" correct for non-square mechanical axis? It seems to me this is the way to correct the residual errors that all real-world machines have. IDK, Chris, no one has men

Re: [Emc-users] making post square.

2021-12-12 Thread Gene Heskett
On Sun, 12 Dec, 2021 at 12:01 PM, Andy Pugh wrote: To: enhanced machine controller (emc) > On 12 Dec 2021, at 17:40, Gene Heskett > mailto:ghesk...@shentel.net>> wrote: > > Is joint.N.cmd-pos the stable value I need? It might be motor-pos-cmd. I am not at home at the moment to test. I

Re: [Emc-users] making post square.

2021-12-12 Thread Chris Albertson
Would "non-trivial kinematics" correct for non-square mechanical axis? It seems to me this is the way to correct the residual errors that all real-world machines have. On Sun, Dec 12, 2021 at 8:40 AM Gene Heskett wrote: > On Sun, 12 Dec, 2021 at 6:09 AM, me wrote: > > > To: emc-users@lists.so

Re: [Emc-users] making post square.

2021-12-12 Thread Andy Pugh
> On 12 Dec 2021, at 17:40, Gene Heskett wrote: > > Is joint.N.cmd-pos the stable value I need? It might be motor-pos-cmd. I am not at home at the moment to test. Is the problem that the column is not square to the table top surface or not square to the Y or X slides? ___

Re: [Emc-users] making post square.

2021-12-12 Thread Gene Heskett
On Sun, 12 Dec, 2021 at 6:09 AM, me wrote: To: emc-users@lists.sourceforge.net Greetings all; I need access to the Z position that is G53 referenced as I need the absolute position on the post assuming the home switch abut 40 thou below the top is at 0.0. Which hal pin or signal gives m

[Emc-users] making post square.

2021-12-12 Thread Gene Heskett
Greetings all; I need access to the Z position that is G53 referenced as I need the absolute position on the post assuming the home switch abut 40 thou below the top is at 0.0. Which hal pin or signal gives me that value? Thank you. Cheers, Gene _