4th axis tangent to path XY

Has there been any further dev on tangential path follow or does anyone know of a cam program that will give the c axis output with xyza ?

mgenton85 wrote: Has there been any further dev on tangential path follow or does anyone know of a cam program that will give the c axis output with xyza ?

From a quick Google it seems that Gcodetools (a plug-in for Inkscape) can do this.

An alternative would be an input filter for LinuxCNC. This would take normal XY G-code and add additional C-axis moves.

andypugh wrote:

mgenton85 wrote: Has there been any further dev on tangential path follow or does anyone know of a cam program that will give the c axis output with xyza ?

From a quick Google it seems that Gcodetools (a plug-in for Inkscape) can do this.

An alternative would be an input filter for LinuxCNC. This would take normal XY G-code and add additional C-axis moves.

yeah that makes no sense to me i tried to use the tangentkins with 2.6.4 but all that happens is joint 3 following error and i dont really understand the language yet
if tangentkins worked that would be ideal can you provide a helpful link so i can decode and learn your program? because i really need to have this capability and i refuse to go back to mach mach 60 ipm with steppers linux 200 ipm same setup except for encoders yeah not going backwards

mgenton85 wrote: can you provide a helpful link so i can decode and learn your program?

Can you re-phrase the question? I am not sure what you mean.

i dont know the lanuage that the tangentkins is wrote in i also dont know where all the variables come from and what they do is there a list that explains what variables there are and what they do so i can work backwards and understand tangentkins ?

with the trajectory planner is there way to link the direction of movement to a c axis?


(side notefor those who dont know what i am aking about) infosys.beckhoff.com/english.php?content...axistracking.htm&id=

Tangentkins is written in C.

To avoid C-axis following errors the simplest solution is to set the f-error limits very wide. There are no trajectory limits on the C-axis with tangentkins.

I don't think that tangentkins is a good solution.

linuxcnc.org/docs/html/motion/kinematics.html