UCCNC sometimes skips about 300 lines of code

[eddyheide]

Hi Guys,

I'm using an UC300ETH with UB1 Brake-out board for a while now with no problems.

But now I have a little issue I can’t solve by myself.

The following is happening:
When I start the program.
UCCNC sometimes skips about 300 lines of code. Which almost every time results in a broken drill bit and a wasted work piece.
Most times after a couple of holes, sometimes right at the beginning.
It only happens during the drilling. For the rest there are no problems, all working fine.

Have you seen this before? And perhaps know what I can do about this?

I am using Fusion 360 for CAM software and UCCNC for motion control.
I included the G-gode for you to look at. (but I don’t see anything out of the ordinary)

I don’t know if it is relevant, but the part is drawn in Solidworks and imported to Fusion 360

I hope anyone can help me, thanks in advance.

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[dezsoe]

Hi!

Which UCCNC version do you use? Can you post your profile (.pro) file?

[eddyheide]

I Use version 1.2049

[dezsoe]

Hmm. Interesting. I saw it one times and it doesn't depend on the settings (profile), because I saw it with my profile. We'll try to find out something.

[eddyheide]

Thanks, I'm very curious if you can find something.

[eddyheide]

Hi,

Did you find something?
Or should I look into an other solution? Maybe give mach4 a try or something like that.

Best regards, Eddy

[dezsoe]

Hi,

Not yet. It's not so easy to find something that happens only sometimes. I saw the problem on the first run of you code, but never again. First I have to find the conditions that cause the issue.

[eddyheide]

I found something new.
When my spindle is in front of the workpiece, its happens not often.
but when the spindle is above or behind the workpiece its happens more often.
when I swap the order of operations and I do the bore operation first.
it almost happens every time when the drilling operation starts.

so I think spindle location is a factor.

[dezsoe]

OK, thanks, it works! I got 3 bad runs of 10. That's enough.

[dezsoe]

Hi Eddy,

We debugged and found the reason for the problem.
We fixed this issue now and will be fine in the next development release.
If you need a quick fix then put a short dwell (G04) after each G73 code, that will fix it.

[eddyheide]

Hi, that’s great news.
I will test the G04 option.
when will the next development be released?

Thanks!, Eddy

[dezsoe]

Hi,

I can't tell you.We are working on it. Register on forum.cncdrive.com • Index page and there you'll see it.