Would you be able to provide a picture (or sketch) of the machine to
clearly show the relative motions of xyza?
On Nov 16, 2012 6:13 PM, "Martin Lederhilger"
wrote:
> Hello,
>
> I have upgraded my 3-axis cartesian machine with a 4th rotatory axis,
> which looks along the X-axis. In my g-code pro
On Sat, Nov 17, 2012 at 01:10:09AM +0100, Martin Lederhilger wrote:
>
> In kinematicsForward and kinematicsInverse: What is the point EmcPose
> 'world' exactly? Is it the absolute pose of the tool tip (like specified
> in the g-code program) or is the tool length compensation already
> applied by
Hello,
I have upgraded my 3-axis cartesian machine with a 4th rotatory axis,
which looks along the X-axis. In my g-code programs I want to use X, Y
and Z for the position of the tool's tip on the workpiece and A for the
angle between the z-axis and the axis of the tool - which is always in
the yz
Jeshua Lacock wrote:
> Greetings,
>
> I was thinking of controlling my CO2 laser intensity using the Z value in the
> G-Code.
>
> Maybe I could use 0-1 for 0% to 100% percent, or perhaps 0-255.
>
> I have a Pico Systems DAC board that outputs 0-5 volts that in turn will
> control the laser power
Why dont you just use the spindle speed S word for the DAC.
On 2012/11/16 08:55 AM, Jeshua Lacock wrote:
> Greetings,
>
> I was thinking of controlling my CO2 laser intensity using the Z value in the
> G-Code.
>
> Maybe I could use 0-1 for 0% to 100% percent, or perhaps 0-255.
>
> I have a Pico S
On 16 November 2012 13:59, Eric H. Johnson wrote:
> There are advantages to using the Z axis for controlling a laser, but they
> come with some problems. Among the advantages are coordinating the laser
> power with the motion of the other axe
M67 analogue output is also coordinated with motion.
You might want to look at
http://www.buildlog.net/forum/viewtopic.php?f=16&t=557&start=60
it is based on graster
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Rastering_With_A_Laser
sam
On 11/16/2012 07:59 AM, Eric H. Johnson wrote:
> Jeshua,
>
> There are advantages to using the Z axis for control
Jeshua,
There are advantages to using the Z axis for controlling a laser, but they
come with some problems. Among the advantages are coordinating the laser
power with the motion of the other axes, lack of stutter as occurs when
adjusting laser power when it is tied to the spindle, the ability to d
I thought it was more traditional to use the S word
to treat laser intensity the same as spindle speed.
The Pico Systems stuff should already have configurations
that present the S word to the DAC for conversion to a
voltage.
Steve Stallings
> -Original Message-
> From: andy pugh [mail
On 16 November 2012 06:55, Jeshua Lacock wrote:
> I was thinking of controlling my CO2 laser intensity using the Z value in the
> G-Code.
The problem with this is that it puts imaginary corners in the
trajectory, and that can make the XY movement stutter.
You might find that M67 works better.
On 16 November 2012 07:49, Klemen Dovrtel wrote:
> The problem is that I don’t know at what time are the signals updated. Will
> the counter increment before the demux will read data or after that?
The HAL components run in the sequence they are added to the HAL.
(though there are parameters yo
2012/11/16 Jeshua Lacock :
>
> Just my 2¢
>
> I think if the axis itself doesn't have any intentional backlash, you could
> mount the torch with a stiff spring.
>
> In normal operation you won't have any backlash from the spring (only if it
> hits the work piece).
That means that this spring has
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