Need Help Please... Mesa 7i76 conversion
25 May 2016 23:19 #75092
by andypugh
The script knows how to convert gantrykins to the new trivkins, but a gantry config becomes pretty simple.
www.linuxcnc.org/docs/ja/html/getting-st...#_kinematics_modules
For a typical gantry you would use
loadrt trivkins coordinates=XYYZ
to connect the X-command to joint0, the Y command to joint1 and joint2 and the Z command to joint3.
(In JA the motors/actuators are referred to by numbers, and the numbers are not hard-coded anywhere to cartesian axes).
If you wanted the machine to home the Z then the X then the two Y motors together, with the Y motors waiting for each other to find separate limit switches for auto-squaring then you would set the HOME_SEQUENCE to 0 for Joint2 (Z), 1 for Joint0 (X) and -2 for joint1 and joint2.
And that is basically, as I understand it _all_ you have to do to set up a gantry in JA14.
Replied by andypugh on topic Need Help Please... Mesa 7i76 conversion
How well this will work on a a trivkins --> gantry comp set of files is unknown
Perhaps Andy Pugh can chime in, I believe he wrote the conversion script
The script knows how to convert gantrykins to the new trivkins, but a gantry config becomes pretty simple.
www.linuxcnc.org/docs/ja/html/getting-st...#_kinematics_modules
For a typical gantry you would use
loadrt trivkins coordinates=XYYZ
to connect the X-command to joint0, the Y command to joint1 and joint2 and the Z command to joint3.
(In JA the motors/actuators are referred to by numbers, and the numbers are not hard-coded anywhere to cartesian axes).
If you wanted the machine to home the Z then the X then the two Y motors together, with the Y motors waiting for each other to find separate limit switches for auto-squaring then you would set the HOME_SEQUENCE to 0 for Joint2 (Z), 1 for Joint0 (X) and -2 for joint1 and joint2.
And that is basically, as I understand it _all_ you have to do to set up a gantry in JA14.
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