topic 4th Axis with Linuxcnc in HSM Post Processor Forum

4th Axis with Linuxcnc

DaPeace — Sun, 03 Jul 2016 10:44:21 GMT

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/page/2

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

Re: 4th Axis with Linuxcnc

ArjanDijk — Mon, 04 Jul 2016 12:37:13 GMT

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.

Re: 4th Axis with Linuxcnc

DaPeace — Mon, 04 Jul 2016 14:08:52 GMT

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

Re: 4th Axis with Linuxcnc

DaPeace — Mon, 11 Jul 2016 07:03:59 GMT

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.