Help adding tool Breakage detection to post

[Anonymous]

Hello, I was hoping someone could help me.  I'd like to add tool breakage detection to my post.  I'm using the standard okuma milling post and my machine has a blum laser.  I would like my post to automatically add some code before every tool change the check for tool breakage.  The code needed would be

M3 S2000

CALL O9608 PH=50. PX=0. PM=1. PQ=0.02 PW=0.

M5 

I've made many simple post changes in the past, but this is a bit over my head.

One thing to note the PH=50. is call up the tool offset to use when checking so this would need to be driven off of whatever tool is in the spindle. For example tool 8 would be PH=8.

Any help would be greatly appreciated

[bob.schultz]

It is pretty straight forward to get this output.  First add the following function to the post, you can place it in front of onSection.

function checkTool(_tool) {
  writeBlock(mFormat.format(3), sOutput.format(2000));
  writeBlock("CALL", "O9608", "PH="+_tool.number, "PX=0.", "PM=1.", "PQ=0.02", "PW=0.");
  writeBlock(mFormat.format(5));
}

Next add the following line in onSection just prior to the tool change.

    checkTool(tool);
    if (properties.preloadTool && !isFirstSection()) {
      writeComment("T" + toolFormat.format(tool.number));
      writeBlock(mFormat.format(6));
    } else {
      writeBlock("T" + toolFormat.format(tool.number), mFormat.format(6));
    }

This should get you the desired output.

[Anonymous]

Thank you Bob, this is really close, the only thing is that it's outputting the height offset for the tool that it is about to change to, not the tool in the spindle. Did I do something wrong or does something else need changing?


Thank you again

[bob.schultz]

Yep, I should have noticed that the tool check is being done before the tool change.  Modify the call to checkTool that you added to onSection to look like this to check the tool currently loaded into the spindle.

    if (!isFirstSection()) {
      checkTool(getPreviousSection().getTool());
    }

[Anonymous]

Sorry, I'm still having some issues I think I'm missing something as to how to put this in the post. Whenever I add this part in it won't post and gives me an error. One other thing I noticed is that it does this at the beginning of the program before the first tool change, I could see this causing some major issues, is there a way to get it to not check in the beginning before the first tool change?


Thank you so much for the help

[bob.schultz]

Your code should look like the following after inserting the new code.  You will notice that there is a check for the first operation.

    if (!isFirstSection()) { // don't check tool on first operation
      checkTool(getPreviousSection().getTool());
    }
    if (properties.preloadTool && !isFirstSection()) {
      writeComment("T" + toolFormat.format(tool.number));
      writeBlock(mFormat.format(6));
    } else {
      writeBlock("T" + toolFormat.format(tool.number), mFormat.format(6));
    }

[Anonymous]

Thank you Bob, this is closer its outputting the proper code but is still outputting the code with the tool its about to change to.

(2D Adaptive1)
M09
M01
M03 S2000
CALL O9608 PH=3 PX=0. PM=1. PQ=0.02 PW=0.
M05
M03 S2000
CALL O9608 PH=1 PX=0. PM=1. PQ=0.02 PW=0.
M05
(T3)
M06
G30 P1
(T3)
G116 T3
T60
S5500 M03

This is an example of what I get, it first run the tool breakage check with the wrong tool offset, the one its changing too, and then the proper one.

Thanks so much

[bob.schultz · Accepted solution]

I think you left the original call to checkTool in your code.  There should only be one call and it should be the one in the isFirstSection() conditional.

[Anonymous · Accepted solution]

Thank you, yes I had forgotten to take out the one check tool.  It works perfectly now.

Thank you for all your help

[Anonymous]

Hello I've run into another problem with this on my Laser side, it looks like certain tools also need a VC115=1.0 added in the post. It would need to look like this


M3 S2000

VC115=1.0

CALL O9608 PH=14. PX=0. PM=1. PQ=0.02 PW=0.

M5


Any help is greatly appreciated.


Thank you

[bob.schultz · Accepted solution]

You can enter the following conditional in the checkTool function to output this line.  If you take a look at this code you can see how easy it is to add output to the NC file.  Since you state that "some" tools need this value, I included a conditional that you will have to add so that the line is not output with all tools.  If you want it output with all tools you can simply replace conditional with true.

function checkTool(_tool) {
  writeBlock(mFormat.format(3), sOutput.format(2000));
  if (conditional) {
    writeBlock("VC115=1.0");
  }
  writeBlock("CALL", "O9608", "PH="+_tool.number, "PX=0.", "PM=1.", "PQ=0.02", "PW=0.");
  writeBlock(mFormat.format(5));
}

[Anonymous]

Thank you that gives me everything I need

[s.noke71]

Hi Guys,

will this work with the standard siemens 840d post i would love tool breakage detection for my machines

[bob.schultz]

The basic logic would work, but the actual output would have to be modified to match the Siemens 840D requirements.