Chamfer lead in collision

[friesendrywall]

Any ideas why Setup->Over->[T13] 2D Chamfer2 won't chamfer all the selected holes?  It says the given lead ins would cause a collision.

[Steinwerks]

Your Tolerance (in the Passes tab) is way too loose. Bringing it in to .0005" solved that issue. Change the Safe Distance in the Linking tab to .05" and the "Lifting feed plane to topmost ramp." warning goes away as well.

[friesendrywall]

I see.  

The issue with that though, managing g187 with haas really needs a better way.  As it is now, I have modded the post give a divide by N variable for the G187 command.  Without, its tough to get a precise part.  I'd like to be able to set G187 separate from the Tolerance, but as it is now there isn't a good way.

[Steinwerks]

What do you mean by precise?

Personally I've altered the G187 variables a bit, removing the E value entirely and removing the axial stock to leave requirement for P1. No issues getting good parts. To be fair, I'm using HSMWorks at work, rarely Fusion.

[friesendrywall]

I am not sure my year (1996 vf2) has the P1 option.  Anyway, I find running a fast circle with E.05 ends up inside by a few thousandths.  Say, 70ipm on a 1 inch circle.  Also, I have a few corners that have to get sharped, the standard .05 doesn't really cut it there.

[Steinwerks]

G187 doesn't do anything without a P value AFAIK.

From the Haas DIY site: (Setting 191) This setting is set to ROUGH, MEDIUM, or FINISH and uses parameters 302, 303, 314, 749, and 750-754 and G187 to set the smoothness and a maximum corner rounding factor. The default values are used when not overridden by a G187 command.

Edit: https://diy.haascnc.com/reference-docs/default-smoothness-and-g187

The Safe Distance is only for linking moves. Otherwise it'll just force your toolpath to .07" above the stock instead of the .05" you have specified in the heights. It's not an issue and won't invalidate your toolpath, just a warning.

[friesendrywall]

It does on the old machines per the manual, and my experience.  The machine acts different, as well as showing a G187 E value with a plane jane

G187E0.01

See archived link here

Or navigate to archived 2000 operators manual--

Then see page 199 (Pdf page 207)

[Steinwerks]

Interesting, didn't realize it had been expanded since its introduction. Well you can always MDI a P value and see what happens! 😉