Fagor Canned Cycle, G68, Roughing in Z. What am I doing wrong?

I've already finger cam'ed the roughing to get this part running, but I'll need to know how to make G68 work at some point in the near future...

I've studied the manual (from Upgrade Technologies) but can't figure out what I'm doing wrong. The program errors a couple lines before the G68, but I'm quite sure the G68 line is the problem. I've heard the Fagor canned cycles are quirky, now I'm living it.

%00034
N00(2012 DROPOUT)
N10G25N40.520.12
N20M30
N30(HOLD)
N40G54(PROGRAM ZERO)
N50G90G95S2000T2.2M3
N51G0Z1
N60G0X.54
N62G0Z.05
N63G1F.005
N64G68P0=K0P1=K0P5=K.06P7=K.004P8=K.001P9=K.002P13=K100P14=K141
....
....
N100G1X.1978F.002(FINISH PATH)
N110X.2350Z-.2675(CHAMFER)
N120X.2350Z-.5905
N130X.4298Z-.5905
N140X.4725Z-.6286(CHAMFER)
N141X.4725Z-1.516
N150G0X.6
N160Z1.0
...
...

QB

Question Boy said:

I've already finger cam'ed the roughing to get this part running, but I'll need to know how to make G68 work at some point in the near future...

I've studied the manual (from Upgrade Technologies) but can't figure out what I'm doing wrong. The program errors a couple lines before the G68, but I'm quite sure the G68 line is the problem. I've heard the Fagor canned cycles are quirky, now I'm living it.

%00034
N00(2012 DROPOUT)
N10G25N40.520.12
N20M30
N30(HOLD)
N40G54(PROGRAM ZERO)
N50G90G95S2000T2.2M3
N51G0Z1
N60G0X.54
N62G0Z.05
N63G1F.005
N64G68P0=K0P1=K0P5=K.06P7=K.004P8=K.001P9=K.002P13=K100P14=K141
....
....
N100G1X.1978F.002(FINISH PATH)
N110X.2350Z-.2675(CHAMFER)
N120X.2350Z-.5905
N130X.4298Z-.5905
N140X.4725Z-.6286(CHAMFER)
N141X.4725Z-1.516
N150G0X.6
N160Z1.0
...
...

QB

Click to expand...

Hi QB,
I'm more familiar with an 8055 control, but I've found the manual on the 8025 and your code looks like it should work. What error are you getting?

Its my understanding that a value for P9>0 will force a finish pass. If P9=0, there will be no finishing pass; but there will be a final roughing pass that maintains the excess material indicated by P7 and P8.

In your example, the P9 value will force a finish pass, then the program will repeat the finish path with the profile definition immediately after the G68 cycle.

If you wanted to use a finishing tool, you should put the profile description at the end of the program, something like the following:

N64G68P0=K0P1=K0P5=K.06P7=K.004P8=K.001P9=K.002P13=K100P14=K141
G0 X_ Z_
M30
N100G1X.1978F.002(FINISH PATH)
N110X.2350Z-.2675(CHAMFER)
N120X.2350Z-.5905
N130X.4298Z-.5905
N140X.4725Z-.6286(CHAMFER)
N141X.4725Z-1.516
N150G0X.6
N160Z1.0


Regards,

Bill

angelw, I haven't tried the G68 again, but I think you solved my problem.

I had the finishing pass before the M30. The sample program in the book clearly shows it after the M30. Doh!

Thanks!

QB

QB..Do you have a 8025 and if so are you able to DNC with it? Ive never been able to get it to work.

Captdave said:

QB..Do you have a 8025 and if so are you able to DNC with it? Ive never been able to get it to work.

Click to expand...

You have to set a few parameters to allow dnc and select "dnc on" on the main menu screen. Do you have Fagor's dnc program? Download from Fagor or Apollo Machine Tool.

Apollo shows a couple of different versions of the Fagor DNC, any idea as which will work with the 8025 and windows XP?

Captdave said:

QB..Do you have a 8025 and if so are you able to DNC with it? Ive never been able to get it to work.

Click to expand...

I do have an 8025, and I can DNC, and I absolutely love the Fagor WinDNC (V5.2). I can power up the control, push three buttons then start up WinDNC on the PC and see a list of the programs stored in the control, upload/download, edit, etc. all right from the comfort of my shop stool. The whole thing is like an episode right out of the Jetsons.

Getting a CNC to talk to a computer has always been a experience for me, but the Fagor/WinDNC is worth the struggle. I set up the cable, the computer port, the software, the parameter settings, and could not figure out why it wouldn't work. A tech guy at Fagor stepped me through my setup, found the problem, and I was on my way.

What machine do you have?

QB

A hardinge DV59 with an Accuslide gang tool plate. It was my first CNC and love that little machine for small parts and still use it often

I may have a little time over the weekend to give it another go.

If you haven't done it already, make a back up of your machine parameters. Its a real bitch to figure them out later as it really depended on how the MTB set it up and the chance that they will have a copy is nil.

since I couldn't get it to DNC I took pictures of all the screens

Captdave said:

I may have a little time over the weekend to give it another go.

Click to expand...

Definitely give it the 'ol college try, even if you have to for a couple hours it'll be worth it.

Captdave said:

If you haven't done it already, make a back up of your machine parameters. Its a real bitch to figure them out later as it really depended on how the MTB set it up and the chance that they will have a copy is nil.

Click to expand...

Done did it, that's one of the sweet features of WinDNC. Log onto the control and a couple keystrokes gets you all the parms.

Captdave said:

since I couldn't get it to DNC I took pictures of all the screens

Click to expand...

Pictures would be 90% better than nothing, but still a lot of button pushing to reload. And, I figure every button I have to push is like ringing Murphy's doorbell.

Git 'er done.

QB