Why do These 5X drill ops crash?

[lowcountrycamo]

This program contains 2 5x drill paths 180 degrees apart.  Posted separately they are fine but when posted together, when the second drill op starts it goes through part, then back up, then drills where it should.  I guess this needs some 5x linking but why?  This is not a criticism, I just want to understand why, and where to look out for this.  My verify does not wipe out  the  part as it usually does with 5x crashes like this. 

Thank you,  Steve A 

 

5X DRILL CRASH.MIN

5X DRILL CRASH.mcam

5X DRILL CRASH.ZIP

[gcode]

try doing both holes in a single operation and uncheck

"Use  Clearance only at Start and End of operation"

[gcode]

You  could also set up a Safety Zone if you really want to do this in two operations

see Linking/Safety Zone

[Colin Gilchrist]

Is there a Reference Point set? How are the MI/MR values configured? (I don't have Mastercam at work, so I can't check until tonight, but I'll give it a go later and see if I can get you a real answer...)

[Colin Gilchrist]

It is likely (if it isn't a Ref Point), than the XYZ values are likely the "prior XYZ Positon", relative to the last rotation, in the "new rotation view".

But I'll have to dig into that to be sure...

[gcode]

After thinking a little more on this

try unchecking "Use  Clearance only at Start and End of operation"

on both operations.

I think it will post correctly now

[Nils N]

I add geometry like this to get the tool safely to the other side. using the line at the arc ends and one in the middle for my axis lines.

[lowcountrycamo]

2 hours ago, gcode said:

After thinking a little more on this

try unchecking "Use  Clearance only at Start and End of operation"

on both operations.

I think it will post correctly now

 

I think that made it worse.

[lowcountrycamo]

So drilling both holes in one op does fix the real crash in post, but now shows the crash in verify.  Errr!

[Colin Gilchrist]

Can you simply add a Point Operation to get the Drill "out of the way" as a Retract move, between the two separate Ops?

[Colin Gilchrist]

That way your Verify would at least work. Then just "Ghost" the Point Op, so it won't Post?

[Nils N]

i forgot to add I use a 5 axis curve for that move. Using that i know i wouldn't be hitting.

[Matthew Hajicek - Singularity]

Could also have something to do with how your post was written.  My post from Postability is really good about retracting before indexing without me having to tell it to.

[Colin Gilchrist]

2 minutes ago, Matthew Hajicek™ - Conventus said:

Could also have something to do with how your post was written.  My post from Postability is really good about retracting before indexing without me having to tell it to.

I think his issue is that if he drills both holes in a single Op, the Post works, but Verify crashes.

Steve, have you considered paying a Post Developer to hook up your Post to Mach Sim? At least that way you'd get a simulation that would actually match your G-code Program...

[lowcountrycamo]

1 minute ago, Colin Gilchrist said:

I think his issue is that if he drills both holes in a single Op, the Post works, but Verify crashes.

Steve, have you considered paying a Post Developer to hook up your Post to Mach Sim? At least that way you'd get a simulation that would actually match your G-code Program...

I had not until now.  Today that would be money well spent

 

[So not a Guru]

Have you tried using forced tool change?