Re: [Emc-developers] Non-Cartesian tool comp

2016-06-10 12:50 GMT+03:00 andy pugh : > My question was how you prevent the TP from doing it. > > The forum post seems to say that motion.tooloffset.z only changes when > G43 is invoked, That's what I observed.. > and at that point something (maybe not TP, maybe some >

[Emc-developers] Here and there comments & questions.

Greetings all; 1. I've noted one foible in the 2.8-pre's. About a week ago I was getting an exceeds z positive limit error during the loading phase, and it refused to run unless I "run it anyway", but the path never exceeded the z upper limit when it was run. I could seen the errant move in

Re: [Emc-developers] Non-Cartesian tool comp

2016-06-10 13:30 GMT+03:00 andy pugh : > Do you use Z or W for the tool-length in your tool table? > > I try to avoid usind more axis if not absolutely nesessary. That is I use Z for now. Bad things (joints jump) happen only when tooloffset is applied with non-vertical tool. I

Re: [Emc-developers] Non-Cartesian tool comp

2016-06-10 12:50 GMT+03:00 andy pugh : > So, one question is how to do a tool-change without applying the > offset twice. (perhaps a remap is the way) > Oh, right. There are actually two offsets: tool and coordinate. I think I use tool offset to handle RTCP and coordinate

Re: [Emc-developers] Non-Cartesian tool comp

On 10 June 2016 at 11:23, Andrew wrote: >> and at that point something (maybe not TP, maybe some >> other layer) applies an offset in cartesian Z. >> > > I haven't observed any additional cartesian offset. Do you use Z or W for the tool-length in your tool table? I don't have

Re: [Emc-developers] Non-Cartesian tool comp

2016-06-10 13:30 GMT+03:00 andy pugh : > I don't have a machine to experiment with (I am at work) but I could > imagine that a Z-offset is applied in cartesian space, but a W-offset > from the tool table won't be, it will just appear on the > motion.tooloffset.w pin. > I just

[Emc-developers] Non-Cartesian tool comp

https://forum.linuxcnc.org/forum/10-advanced-configuration/30953-the-tool-coordinate-system-of-a-6-dof-robot?start=10#75720 Interesting question. How do you do tool-length comp and diameter-comp in a non-cartesian system? Do we have an accepted way? The kinematics should be able to do it, but

Re: [Emc-developers] Non-Cartesian tool comp

2016-06-10 12:20 GMT+03:00 andy pugh : > > https://forum.linuxcnc.org/forum/10-advanced-configuration/30953-the-tool-coordinate-system-of-a-6-dof-robot?start=10#75720 > > > Interesting question. How do you do tool-length comp and diameter-comp > in a non-cartesian system? > >

Re: [Emc-developers] Non-Cartesian tool comp

On 10 June 2016 at 10:34, Andrew wrote: >> The TP is not doing it. > I've done it in kinematics for hexapod. My question was how you prevent the TP from doing it. The forum post seems to say that motion.tooloffset.z only changes when G43 is invoked, and at that point

Re: [Emc-developers] Here and there comments & questions.

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Re: [Emc-developers] Here and there comments & questions.

On Friday 10 June 2016 11:06:50 EBo wrote: > On Jun 10 2016 8:57 AM, Gene Heskett wrote: > > On Friday 10 June 2016 10:18:26 Dave Cole wrote: > >> I'm going to try the standard screw comp out next week on a brand > >> new > >> ball screw that must have been made with a hammer, anvil and file. > >

[Emc-developers] DISCUSS: Merge the "joints-axes" project to master branch

I propose that we vote the following items at the next IRC meeting (Saturday, June 25, 2016-06-25T1600Z): That we * Thank all developers who have contributed to the joints-axes project, but particularly Dewey Garrett, Michael Geszkiewicz, Alex Joni, and Andy Pugh for their major

Re: [Emc-developers] Here and there comments & questions.

On Jun 10 2016 8:57 AM, Gene Heskett wrote: > On Friday 10 June 2016 10:18:26 Dave Cole wrote: >> >> I'm going to try the standard screw comp out next week on a brand >> new >> ball screw that must have been made with a hammer, anvil and file. > > You paint a picture of a Chinese, working over a

Re: [Emc-developers] Here and there comments & questions.

On 10 June 2016 at 14:58, Gene Heskett wrote: > 2. Since I am about to get a bigger lathe, and I have no experience with > with mapping screw compensations, I need to ask if its possible to use > a screw comp file to map in both directions so that a reasonable amount > of

Re: [Emc-developers] Here and there comments & questions.

On Friday 10 June 2016 10:11:55 andy pugh wrote: > On 10 June 2016 at 14:58, Gene Heskett wrote: > > 2. Since I am about to get a bigger lathe, and I have no experience > > with with mapping screw compensations, I need to ask if its > > possible to use a screw comp file to

Re: [Emc-developers] Here and there comments & questions.

On 6/10/2016 9:58 AM, Gene Heskett wrote: > 2. Since I am about to get a bigger lathe, and I have no experience with > with mapping screw compensations, I need to ask if its possible to use > a screw comp file to map in both directions so that a reasonable amount > of bed wear, which will

Re: [Emc-developers] Here and there comments & questions.

On Friday 10 June 2016 10:18:26 Dave Cole wrote: > On 6/10/2016 9:58 AM, Gene Heskett wrote: > > 2. Since I am about to get a bigger lathe, and I have no experience > > with with mapping screw compensations, I need to ask if its > > possible to use a screw comp file to map in both directions so