fortunatelly I havent met this problem (customers havent )
So still I know only this:
- on every cutcom ON - add M120 LA3
- try to change operation tolerance
- try to generate operation with different tool you will use in real
But I am sure these above are not 100% solutions
- M120 I've already used, and it helped me.
- I wouldn't like to "play" with tolerances and guess every time if I get error or without error.
- A lot of ideas are written above, but I have one more: maybe to use 3D compensation instead 2D (if the machine has this option). The advantage of this method is programming of path for tool's centre instead contact point.
Maybe, but thing is you cant turn on 3D comp in planar mill or in cavity on last path.
Also you have no contact points generated - no contact normal.
In particular Ive met problem when customer machined 2,5D blade profile and turn on cutcom.
Even he was using cavity with cutcom on last pass because he wants constant stock for finishing.
So small lines with cutcom -problem.
Why I can't?
I did it and then simulated in the Heidenhain Virtual PCstation. Unfortunately I can't to do the same test on the machine now.
There are several formats of 3D compensation. See the chapter 3D-compensation Peripheral Milling in the Heidenhain Guide. This is very simple output like 5-axis path. Switch on M128 and output XYZABC for tool tip without any contact normals. To add RR/RL you can use UDE Cutter Compensation for your operation.
The only minus of this method is the linear output without arcs.
aha, I know what you mean,
I use 3D in PP like FN XYZ TX TY TZ NX NY NZ
and T.. componenst are contact normal what you dont have in planar mill
Anyway this is a solution for 3-axis operations where it is failure of 2D compensation with no RTCP. Don't you think so?
Switch on RTCP + RR/RL and be happy
Then it remains only to appreciate the smoothness of surface in this mode on the machine (?)
hm, I think it could be possible. I have not studied it more.
But probably everybody wants normal working 2D cutcom within 2,5D geometry.
back to 2D cutcom problem:
I really dont know cause of that failure. Ive heard that cutcom normals are crossed and M120 LA3 could recalculate the profile and make it works. But sometimes it doesnt work.