[ckirchen]

I'm trying to run the following code:

T2 M06
G90
S436 M03
M08
G01 G43 X1.75 Y-.45 H02 Z.1 F200.
G83 X1.75 Y-.45 Z-1.8814 R.1 Q.125 F2.15
G80
M09

The spindle rapids to Z.1" (above the part) and starts drilling. When it reaches Z-.025", it stops moving. The spindle continues to turn, but the axis no longer moves.

I've run code like this hundreds of times before without any problems. And my MiniMill runs the same code just fine.

To get around it, I had to modify the code so that the block before the canned cycle uses G00 instead of G01.

T2 M06
G90
S436 M03
M08
G00 G43 X1.75 Y-.45 H02 Z.1
G83 X1.75 Y-.45 Z-1.8814 R.1 Q.125 F2.15
G80
M09

Does anyone have any idea why this would happen?

[Geof]

Gremlins

In many years of running many Haas machines I have encountered this type of inexplicable behaviour. This particular one I have not seen probably because I always have my G43 Hnn on its own line and always have a G00 approach move. I cannot suggest any idea why it is happening.

Is it a new machine, have you contacted Haas? Back in the early 2000s when I was buying new machines some glitches were in the software which was constantly being upgraded so all it needed was a more up to date version loaded on the machine.

[mactec54]

ckirchen

You are just missing a G98 or G99 next to the G83 ,It is not always needed, but good practice to use it, Plus do the rapid position move before the Z move

T2 M06
G90
S436 M03
M08
G00 X1.75 Y-.45 F200.
G00 G43Z.1H02
G83G99 X1.75 Y-.45 Z-1.8814 R.1 Q.125 F2.15
G80G0Z3.
M09
M5
M30

[Ydna]

G98 is the default when the machine is booted up, so it's active unless you stick the G99 in there. But...wouldn't the drill still return upwards after the hole, just using the initial 0.1 height either way?
(I would test it out myself but the machines are tied up)

[mactec54]

Ydna

That is correct, one of Haas control defaults is G98, but because ckirchen put his Z move with the X Y move, the Control would not know what to do,so would need the G99 so the R.1 would then be active

It is always good practice to use them, either the G98 or the G99 depending on what you are doing, you can then use the same program in other controls