Problem with Fusion360 on Haas machine... Z height to start is too low.

[HappyHapgood]

I've run into a problem and I can't figure it out. And of course I am under the gun on a deadline.

Using Fusion360 I have a CAM file to drill some holes in a part. The part is tall, and the drill is long.

On the Haas I have my tool loaded (T3) and it is ABOVE my part and to the left (+x). G54 is set correctly at the TOP of the part.

But as soon as I Cycle Start it lowers the drill and start moving X positive... and it's going to crash. I've caught it and stared at my code, but I can't see why it is lowering the tool below the clearance/retract/feed heights.

Here's my .nc file:
And pasted is a screen shot of the heights tab.

Any ideas?



I can upload a video if that helps, but it's fairly straight forward. First thing the Haas does is lower the Z. Then start moving left.


O62302 (Drill Final)
(Using high feed G1 F500. instead of G0.)
(T3 D=0.4375 CR=0. TAPER=118deg - ZMIN=-1.2314 - drill)
N10 G90 G94 G17
N15 G20
N20 G53 G0 Z0.

(Drill29 2)
N25 T3 M6
N30 S900 M3
N35 G54
N40 M8
N45 G0 X4.25 Y3.969
N50 G43 Z1.25 H3
N55 G0 Z0.6
N60 G98 G83 X4.25 Y3.969 Z-1.2314 R0.6 Q0.1 F4.
N65 Y0.469
N70 Y-0.469
N75 Y-3.969
N80 X-4.25
N85 Y-0.469
N90 Y0.469
N95 Y3.969
N100 G80
N105 G0 Z1.25

N110 M5
N115 M9
N120 G53 G0 Z0.
N125 X0.
N130 G53 G0 Y0.
N135 M30

%

 

[AJ H]

Nothing wrong with that program, make sure your "H" offset is set correctly

 

[Fancuku]

Code looks fine. There has to be a problem with you not touching off the tool correctly or G54 not setup correctly.

 

[csharp]

I've run into a problem and I can't figure it out. And of course I am under the gun on a deadline.

Using Fusion360 I have a CAM file to drill some holes in a part. The part is tall, and the drill is long.

On the Haas I have my tool loaded (T3) and it is ABOVE my part and to the left (+x). G54 is set correctly at the TOP of the part.

But as soon as I Cycle Start it lowers the drill and start moving X positive... and it's going to crash. I've caught it and stared at my code, but I can't see why it is lowering the tool below the clearance/retract/feed heights.

Here's my .nc file:
And pasted is a screen shot of the heights tab.

Any ideas?

View attachment 323456

I can upload a video if that helps, but it's fairly straight forward. First thing the Haas does is lower the Z. Then start moving left.


O62302 (Drill Final)
(Using high feed G1 F500. instead of G0.)
(T3 D=0.4375 CR=0. TAPER=118deg - ZMIN=-1.2314 - drill)
N10 G90 G94 G17
N15 G20
N20 G53 G0 Z0.

(Drill29 2)
N25 T3 M6
N30 S900 M3
N35 G54
N40 M8
N45 G0 X4.25 Y3.969
N50 G43 Z1.25 H3
N55 G0 Z0.6
N60 G98 G83 X4.25 Y3.969 Z-1.2314 R0.6 Q0.1 F4.
N65 Y0.469
N70 Y-0.469
N75 Y-3.969
N80 X-4.25
N85 Y-0.469
N90 Y0.469
N95 Y3.969
N100 G80
N105 G0 Z1.25

N110 M5
N115 M9
N120 G53 G0 Z0.
N125 X0.
N130 G53 G0 Y0.
N135 M30

%

Have you tried this in single block. I assume the head is dropping on the G53 Z0 line. Likely you just don't have enough travel. I believe G53 z0 is below the max z height the machine can travel. In MDI crank the head up as far as it will go and command the G53 z0 and see if the head drops

 

[toolsteel]

This may help
https://www.youtube.com/watch?v=Rd-h0YA9IzQ

 

[SeymourDumore]

Unless I misunderstood your problem, what's up with this:

(Drill29 2)
N25 T3 M6
N30 S900 M3
N35 G54
N40 M8
N45 G0 X4.25 Y3.969
N50 G43 Z1.25 H3 <------????

How' bout this instead:

(Drill29 2)
T3 M6
G00 G43 H03 D03 (<-------!!!!)
S900 M3
G54
N40 M8
G00 Z1.25 (<-----!!!)
G0 X4.25 Y3.969

IOW, you were moving in X and Y before activating the length offset.
If you are normally doing it that way, I guess the machine won't bitch and it won't be an issue with collision if there is enough albow room in Z.
Now that the part is tall and tool is long, you've just got bitten in the ass for a perfectly good reason!

I absolutely do not understand why would anyone not activate length and dia BEFORE any movement!
My standard SOP is:

Tx M06
G00 G43 Hx Dx
always always always always ....

 

[HappyHapgood]

It's dropping PRIOR to the N45 line. Then starts to move sideways into the work. That's what I don't understand. I'll try your recommendation.

And sorry to you and the others who replied... I've been so under the gun that I haven't typed replies. I have been working with someone from Phillips Corp (Haas vendor) and not yet resolved it either. I ended up manually doing the drilling with the machine (just annoying because can't peck and I had a BUNCH of them to do.

Have you tried this in single block. I assume the head is dropping on the G53 Z0 line. Likely you just don't have enough travel. I believe G53 z0 is below the max z height the machine can travel. In MDI crank the head up as far as it will go and command the G53 z0 and see if the head drops

 

[HappyHapgood]

Really good point. As you may have noticed... I am not very experienced and still learning. I appreciate your clear guidance and will try this over the weekend.

Unfortunately, my compressor crapped out yesterday (fortunately, I finished the job right as it was dying. Kinda humorous... I think it literally threw a rod. Made a most god-awful racket for about ten minutes (I was too desperate to finish the job to shut it down and after about 10 minutes it slowly quieted down. Figure it ate a rod or something. I'll be disassembling it this weekend to see if it's salvageable. It was a cheap unit that lasted 35 years so probably time to replace it anyway.

 

[HappyHapgood]

Yup. Threw a rod. Wedged a piston. Tore up the fan. But now fully overhauled and back to being very mediocre!