5 axis spindle XYZB table A

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07 Oct 2017 15:25 #100049 by narogon
I have a cartesian XYZ machine which spindle can rotate over Y axis (B) and has a table what rotates over a translated X (Ly Lz) axis (A).

My problem is I don´t understand so well how to express the relation between the origin of the workpiece space (that I supposed is the G54 touch) off and the X rotation axis.

Could you guide me to a start point in order to make the kinematics of this machine?

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10 Oct 2017 22:42 - 10 Oct 2017 22:46 #100172 by andypugh
Unfortunately, unless you use a specific kinematics file, LinuxCNC simply doesn't know where the rotary axis is in XYZ space.

There is some (rather detailed) info here: linuxcnc.org/docs/devel/html/motion/5-axis-kinematics.html but I don't think it helps you very much.

Do you actually want TRT (which is not often used with a 4-axis machine).

I see you have a 5 axis :-)

This sounds a lot like this machine:

Which uses "maxkins"
linuxcnc.org/docs/html/man/man9/kins.9.html
Last edit: 10 Oct 2017 22:46 by andypugh.

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13 Oct 2017 17:11 - 13 Oct 2017 17:13 #100328 by narogon
Replied by narogon on topic 5 axis spindle XYZB table A
This is a schema of the machine

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Last edit: 13 Oct 2017 17:13 by narogon.

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13 Oct 2017 18:30 #100329 by andypugh
Unusual...

If you have a 3D model you can easily make a Vismach model to test out kinematics:
linuxcnc.org/docs/2.7/html/gui/vismach.html

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