CNC machine won't stop to change tools

[raquelbennaton]

Hi, The cnc machine usually stops to change tools in between cutting but this time it continued to machine without pause and drilled a bigger bit. why does this happen and how can I solve this issue?

[seth.madore]

It sounds to me like you have two tools that are numbered the same.

If that is definitely not the case, could you share your Fusion file as well as state what post processor you are using?

[raquelbennaton]

Here is the fusion file, the tools I used are 6mm and 4mm. trace is 6mm and contour is 4mm

[seth.madore]

And what post processor?

[raquelbennaton]

 the post process is for a mach3mill 

[seth.madore]

Does your machine have a toolchanger, or do you have to swap out bits manually?

[raquelbennaton]

we have to change the tools automatically. So after finishing cutting the 6mm bit the machine pauses so we can change the tool to 4mm but sometimes it doesn't stop "jumping" to the next step and cutting out the 4mm path with the 6mm tool.

[seth.madore]

Your statement sounds contradictory (perhaps I'm misunderstanding you). Does your machine have a toolchanger that manages the entire process of changing out tools, or do you need the machine to stop for you to manually change the tool, using wrenches and the like?

[raquelbennaton]

Sorry, I meant the machine needs to stop so we manually have to change the
tools with wrenches

[seth.madore]

If you are willing to edit your post processor, we can get an M0 added right after the tool call.

Find this spot in the Mach3 post (approximately line 894):

if (getProperty("useM6")) {
      writeBlock("T" + toolFormat.format(tool.number), mFormat.format(6));
    } else {
      writeBlock("T" + toolFormat.format(tool.number));
    }

Change it to this:

if (getProperty("useM6")) {
      writeBlock("T" + toolFormat.format(tool.number), mFormat.format(6));
    } else {
      writeBlock("T" + toolFormat.format(tool.number), (mFormat.format(0))); 
    }

This will give you an output such as:
T2M0 (which will stop the machine)

[raquelbennaton]

Hi, I am trying to cut the inside of the mounting holes that at the moment are all in one layer. But when I select to cut it it cuts on the outside and not the inside. Is there a way to invert it so that way it cuts inside ?