4th Axis with Linuxcnc

[DaPeace]

Hello,

ive tried to create a cylinder and mill out 2 pockets with my rotary axis.

Ive edited the post like described here -> http://forums.autodesk.com/t5/computer-aided-machining-cam/3-1-machining-using-linuxcnc/td-p/6028460...

When i export 1 of both toolpath everything works.

When i export both toolpath in one gcode-file i get the following error:

Output path: /Users/PmK/Fusion 360 CAM/nc/1.ngc
Checksum of intermediate NC data: c1081b44d946764c5e81ef55fd369041
Checksum of configuration: 1dea9e9b1b35f5bb3383d866c1e122a5
Vendor url: http://www.linuxcnc.org
Legal: Copyright (C) 2012-2015 by Autodesk, Inc.
Generated by: Fusion 360 CAM 2.0.2139
...
Error: Failed to invoke function 'onSection'.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error: Failed to invoke 'onSection' in the post configuration.
Error: Failed to execute configuration.
Stop time: Sun Jul 3 10:39:36 2016
Post processing failed.

Modification of the post-processor:

if (true) {
var aAxis = createAxis({coordinate:0, table:false, axis:[1, 0, 0], range:[-360,360], preference:1});
machineConfiguration = new MachineConfiguration(aAxis);
setMachineConfiguration(machineConfiguration);
optimizeMachineAngles2(0); // TCP mode
}

var tcp = false;

Any hint how i could export a toolpath with rotary informations?

Or maybe a working post-processor-cps-file?

Regards, Jan

[ArjanDijk · Accepted solution]

Hi Jan (are you Dutch?)

It probably has to do with the orientation of your WCS. Cant see it in the picture. For a working A axis, the Z axis must be normal to the wall of you cilinder.

[DaPeace]

Hello and thanks for trying to help me.

No im not dutch. Im from germany and living in austria..

My WCS is like shown on the attachment.

My Machinesetup is a little special..

My A-Axis is along the y-axis and not x-axis. Maybe i have to setup the axis in post-config as a b-axis?

Regards, Jan

[DaPeace]

i got it working. Ive added a baxis in linuxcnc-postprocessor and now it seems to work.

now i only have to figure out how tool orientation really works.. the interface to set the correct orientation is a little annoying.