Centroid Community CNC Support Forum

Yep, the current one is a completely new build, but it requires the machine configuration to do more than 3 axes.

TCP must set to true in the PP

I already made the rigid tapping changes and pecking instead of chip breaking.

I will add more stuff. Maybe we can work together on it, so we will have all mods in one place.

Uwe

suntravel wrote: ↑Mon Jan 13, 2025 12:38 pm Yep, the current one is a completely new build, but it requires the machine configuration to do more than 3 axes.

TCP must set to true in the PP

I already made the rigid tapping changes and pecking instead of chip breaking.

I will add more stuff. Maybe we can work together on it, so we will have all mods in one place.

Uwe

Hi uwe, that sounds good. If you have discord or whatever we can talk about a way to organize this.

I have no discord, but we could open a new thread like Spikee/Uwe PP.

If one of us is making changes post the new PP version.

Any change should be with a spikee / Uwe comment.

I have the next days anyway no time to work on it, must get the new control in a perfectly working condition and build the 5th axis to have some hardware for testing. So I doubt we are working on it in the same time.

Uwe

I tired tapping holes with chip breaking on some 7075 aluminum toe clamps. I used the chip breaking simply to see how delicately I can tap holes in the event that I want to sue 3d printed soft jaws. Just an experiment. I think every worked fine, but the spindle made loud sounds as it stopped abruptly for each peck cycle.

I did not have luck video taping the actual run, but here is another test run using 6061. It sounded exactly the same. On the actual run, I used MQL lubrication. It was too loud for the test run so I loaded the tap and hole with A9.

NOTE: This is an uncoated spiral point tap. I wanted to use the same tap that I used for the toe clamps, so I drilled the hole all the way through for this test run.

https://www.dropbox.com/scl/fi/e26n3i6i ... idr8r&dl=0

What do you think... Does this sound strange or am I overthinking?

Richard

this is the sound from play in the quill driving profile.

Uwe

Thanks... I did not think about that. Looks like all is working fine. Thanks.

Update on rigid tapping with chip breaking.

When I tested this a few weeks ago, it worked perfectly but I was only tapping one hole. Today I tried to tap four holes and quickly learned that it tapped the first of four holes with chip breaking, but the 2nd, 3rd and 4th holes did not have the peck cycle and only tapped as deep as one peck depth.

When I graphed the g-code in CNC12, it displayed it as pecking the 1st hole, and not the rest (The simulation in Fusion was correct). Fusion and g-code below. Here is an image of the part for reference:

Part: https://www.dropbox.com/scl/fi/9eotke9p ... 4y44c&dl=0


Fuson File: https://a360.co/4hPa6Px
g-code for rigid tapping with chip breaking: https://www.dropbox.com/scl/fi/gkhmgovo ... sjs9a&dl=0

PS: I know I don't need tapping with chip breaking for this part, just wanted to test it.

That looks like a postprocessor issue.
Block N75 tells it to tap the first hole to a depth of -0.25.
Block N80 tells it to re-tap that same location to a depth of -0.4175.
Blocks N85, N90 and N95 tap three additional locations, once each, to a depth of -0.4175.

So the Centroid control is presumably doing just what the G codes tell it to do.

To get the results I assume you wanted (do each hole twice, once to -0.25 and then to -0.4175) the code would have to read:

Yes. That is precisely what I observed.

I will try to fix this.

Uwe