Struggling with the z-axis
- martinwh99
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16 Nov 2013 03:31 #40843
by martinwh99
Struggling with the z-axis was created by martinwh99
Hello
I just got my cnc mill ready and the axix are running. But i do have problem with the z axis. I have the following defined in Steppconf.
x form 0 to 540
y from 0 to 940
z from -110 to 0
and my 0,0,0 is in the left upper corner.
so fare i read and understood what is written in the wicki. although i do not understand why the z axis must be defined like that.
when i try to run the linuxcnc example it tells my that the z-axis is out of limit.
in linux.ini i have set the following values
5221 0.00000
5222 0.00000
5223 -110.00000
When starting my machine is on 0,0,0 than i do the reference and set home to the axis.
But the error i get is that my z axis is out of the lower limit.
can someone please help me, thank's
regards
Martin
I just got my cnc mill ready and the axix are running. But i do have problem with the z axis. I have the following defined in Steppconf.
x form 0 to 540
y from 0 to 940
z from -110 to 0
and my 0,0,0 is in the left upper corner.
so fare i read and understood what is written in the wicki. although i do not understand why the z axis must be defined like that.
when i try to run the linuxcnc example it tells my that the z-axis is out of limit.
in linux.ini i have set the following values
5221 0.00000
5222 0.00000
5223 -110.00000
When starting my machine is on 0,0,0 than i do the reference and set home to the axis.
But the error i get is that my z axis is out of the lower limit.
can someone please help me, thank's
regards
Martin
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16 Nov 2013 07:18 #40847
by andypugh
You probably need to "touch off" the Z-axis. This means telling the system what you want to call the current position.
The sample files are set up with Z=0 at the surface of the work, then the rapid moves are clear of the work at + something, and the cuts are to - something.
In the non-offset machine coordinates, anything +Z is out of bounds. This is perfectly normal, you pretty much _never_ work in machine reference coordinates.
So you need to jog to somewhere inside the machine limits, and say _this_ is where I want Z=0 to be.
Replied by andypugh on topic Struggling with the z-axis
when i try to run the linuxcnc example it tells my that the z-axis is out of limit.
You probably need to "touch off" the Z-axis. This means telling the system what you want to call the current position.
The sample files are set up with Z=0 at the surface of the work, then the rapid moves are clear of the work at + something, and the cuts are to - something.
In the non-offset machine coordinates, anything +Z is out of bounds. This is perfectly normal, you pretty much _never_ work in machine reference coordinates.
So you need to jog to somewhere inside the machine limits, and say _this_ is where I want Z=0 to be.
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16 Nov 2013 15:26 #40856
by Rick G
Replied by Rick G on topic Struggling with the z-axis
Also take a look here for some info on the "touch off button"...
wiki.linuxcnc.org/cgi-bin/wiki.pl?Coordi...r_origin_on_material
Rick G
wiki.linuxcnc.org/cgi-bin/wiki.pl?Coordi...r_origin_on_material
Rick G
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16 Nov 2013 20:53 #40861
by BigJohnT
Replied by BigJohnT on topic Struggling with the z-axis
You might also read the first few comments in the linuxcnc file and see that it tells you you must touch off first.
JT
JT
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- martinwh99
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22 Nov 2013 22:08 #41115
by martinwh99
Replied by martinwh99 on topic Struggling with the z-axis
Thanks to all. I managed it and now my machine is running. Once again thank you
regards
Martin
regards
Martin
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