Post Procesor for siemens 840d, the 4th axis

[toneanu_livia26]

Hi,

   I want to make a piece in the 4th axis, but when I open the program on the machine, an error appear at the phrase "TRAORI". Is there a post procesor that replace "TRAORI" with something else?

   And another problem that I have with this post procesor is that it doesn't inserts the workpiece and the name of the tool. I have attached below the program and the post procesor that I use for the 4th axis.

[Arun.rs · Accepted solution]

HI @toneanu_livia26 

Most of the 4th axis machines has no any TCP function, so it is possible you have to configure it in this way :

optimizeMachineAngles2(1);

 b. Go to line number 819 and put '//' in front of below code. 

 

writeBlock("TRAORI");​

This will omit the TRAORI code in NC output.

c. Go to line number 247, and make it as true to enable the 'WORKPIECE' option

if (true) { // stock - workpiece
    var workpiece = getWorkpiece();
    var delta = Vector.diff(workpiece.upper, workpiece.lower);
    if (delta.isNonZero()) {
      writeBlock(
        "WORKPIECE" + "(" + ",,," + "\"" + "BOX" + "\""  + "," + "112" + "," + xyzFormat.format(workpiece.upper.z) + "," + xyzFormat.format(workpiece.lower.z) + "," + "80" +
        "," + xyzFormat.format(workpiece.upper.x) + "," + xyzFormat.format(workpiece.upper.y) + "," + xyzFormat.format(workpiece.lower.x) + "," + xyzFormat.format(workpiece.lower.y) + ")"
      );
    }
  }

Save the file and test the output carefully,

Regards

[toneanu_livia26 · Accepted solution]

Hello,
Thank you very much, I am looking forward to test it tomorrow.

[toneanu_livia26]

Hi again 🙂

Please, when you have time, I have two contoured pieces. One works, with your solution, another no. The postprocessor does not output anything. I know it works because I've done this piece in the past. Thanks a lot!

[Arun.rs]

HI @toneanu_livia26 

You have incorrectly set the WCS. 

Set the WCS as shown in image and check the output 

Regards

[toneanu_livia26]

Hi

He has something else if it doesn't work... yet 🙂

[Arun.rs · Accepted solution]

HI @toneanu_livia26 

This is happening because limits you have mentioned in the post are reached, so it tries to retract to the home position. Mostly the 4 axis machines allows the cyclic motion it doesn't need to be retract and reconfigure.

Change this:

var aAxis = createAxis({coordinate:0, table:true, axis:[1, 0, 0], range:[-360.0001,360.0001], preference:1});

To this:

var aAxis = createAxis({coordinate:0, table:true, axis:[1, 0, 0], cycle:true, preference:1});

Regards