Newbie- Okuma Newbie Needs Help

[craven12]

2003 Okuma Captain L370M OSPE100L, IEMCA VIP 80 Barfeeder.

Hi folks, new to this site. For the last 10 years I have run Fanuc controls. We now have a used Okuma, which I have no
experience with. This is a SSB file that was with the machine when we got it. I am trying to understand it. It's for
the barfeeder. Can someone explain what some of the commands mean? G and M codes (except for the M436, I can't seem to find what that is) I do know, but VDIN, NRTS, RTS, I don't know.
Any help would be appreciated.

Craven12

-------------------------------------------------------------------------------------------------------------------
OBAR2
N1 G50 S3000
G0 X22 Z22 M5
T010101
X.200 Z.02 T010101
M84
G4 F8 (pusher does full retract, so it doesn't whip in the sleeve. Slow to advance, hence the 8 second dwell)
M83
G4 F2
G0 Z1
IF [VDIN[24] EQ 1] N100 (what does this line mean?)
GOTO NRTS
N100 M77
M84
G0 X22 Z22
G4 F8
M436 (what the heck is this?)
M83
M76
G4 F2
G0 X.100 Z.02 T010101
M84
G4 F8
M83
G4 F2
G0 Z1
NRTS RTS

[neilw20]

Originally Posted by craven12 2003 Okuma Captain L370M OSPE100L, IEMCA VIP 80 Barfeeder. Hi folks, new to this site. For the last 10 years I have run Fanuc controls. We now have a used Okuma, which I have no experience with. This is a SSB file that was with the machine when we got it. I am trying to understand it. It's for the barfeeder. Can someone explain what some of the commands mean? G and M codes (except for the M436, I can't seem to find what that is) I do know, but VDIN, NRTS, RTS, I don't know. Any help would be appreciated. Craven12 ------------------------------------------------------------------------------------------------------------------- OBAR2 (LABEL. Thats an uppercase 'O') N1 G50 S3000 (SETS MAX RPM May default to zero and spindle won't start) G0 X22 Z22 M5 (move away from end of job assuming X0Z0 at end. STOP spindle) T010101 (Tool change) X.200 Z.02 T010101 (Rapid move relative to tool 1 table settings IMHO) M84 (unclamp?) G4 F8 (pusher does full retract, so it doesn't whip in the sleeve. Slow to advance, hence the 8 second dwell) M83 (Clamp?) G4 F2 (Pause for clamping. Is this needed?) G0 Z1 (1 unit inch/metric? from end of job) IF [VDIN[24] EQ 1] N100 (what does this line mean?) (CLAMPED?) GOTO NRTS (ABORT PROGRAM I think is check for correct clamping) N100 M77 (??) M84 (some canned machining cycle. Not much good if no material removed) G0 X22 Z22 (RAPID Away from the job. The rest is a mystery) G4 F8 M436 (what the heck is this?) M83 M76 G4 F2 G0 X.100 Z.02 T010101 M84 G4 F8 M83 G4 F2 G0 Z1 NRTS RTS

I have had an different model Okuma and are making a few assumptions.

[broby]

[quote=craven12;403215]2003 Okuma Captain L370M OSPE100L, IEMCA VIP 80 Barfeeder.

Hi folks, new to this site. For the last 10 years I have run Fanuc controls. We now have a used Okuma, which I have no
experience with. This is a SSB file that was with the machine when we got it. I am trying to understand it. It's for
the barfeeder. Can someone explain what some of the commands mean? G and M codes (except for the M436, I can't seem to find what that is) I do know, but VDIN, NRTS, RTS, I don't know.
Any help would be appreciated.

Craven12

-------------------------------------------------------------------------------------------------------------------
(Making the assumption this program is Imperial)
OBAR2 (sub program name, ie what is called from the main program)
N1 G50 S3000 (max spindle speed)
G0 X22 Z22 M5 (Rapid to Home posn and stop the spindle)
T010101 (select tool 1, Tool Nose Rad comp for 1 and Offset 1)
X.200 Z.02 T010101 (move to posn making sure tool 1 is selected first)
M84 (open the chuck)
G4 F8 (pusher does full retract, so it doesn't whip in the sleeve. Slow to advance, hence the 8 second dwell) (well you know the answer here already)
M83 (Close the chuck)
G4 F2 (wait another 2 seconds)
G0 Z1 (rapid to Z posn)
IF [VDIN[24] EQ 1] N100 (this is checking an input to see if it is on or not)
(to find out which one you need to have the maintenance manual)
(if the input is ON then it will jump to line N100)
GOTO NRTS (unconditional jump to line NRTS)
N100 M77 (what does M77 do when input via MDI?)
M84 (open the chuck?)
G0 X22 Z22 (rapid to home position, but if M84 is Chuck open then lookout!)
G4 F8 (wait 8 seconds)
M436 (what the heck is this? Have you tried via MDI to see what happens? With hand near E-Stop!)
M83 (close chuck)
M76 (Try via MDI to work out this M Code)
G4 F2 (wait 2 seconds)
G0 X.100 Z.02 T010101 (rapid to XZ position with tool 1)
M84 (chuck open)
G4 F8 (wait 8 seconds)
M83 (chuck Close)
G4 F2 (Wait 1 second)
G0 Z1 (rapid to Z1)
NRTS RTS (RTS means ReTurn from Sub, Equivalent of Fanuc's M99)

I would suggest that you try in MDI mode some of the M codes to see what they do, then the process of decoding the program will be much easier!
If this program is to be used for barfeeding it seems to contain some rather strange coding and movement values.

The SSB file I created for barfeeding is much easier to follow...
Program is written for a maetric system!
The call to the program contained several variables allowing the user to select the barfeed tool number, length to feed out, Diameter at which the tool is to be positioned at and the position at which the "cut" face is located at.
the G94 allows the machine to move in feed mode without the spindle rotating! (feed per minute rate rather than G95 feed per rev)



$B-FEED.SSB%
SUBPROGRAM OBARF USED FOR BAR FEEDING IN LCS15 ONLY
LAST UPDATED 29/08/97 BJR
TO USE, COPY FOLLOWING LINE INTO MAIN PROGRAM
CALL OBARF LEN=84.5 CUTP=-2.5 TOOL=505 DIAM=05
OBARF
N1 G0 X600 Z600
NBARF T=TOOL
N3 X=DIAM Z=LEN+5
N4 Z=CUTP
N5 M84
N6 G1 G94 Z=LEN+0.5 F3000
N7 G4 F1
N8 M83
N9 G0 G95 X600 Z600
N10 RTS

Hope some of this makes sense!
If not... oh well, one but can try eh!?!
Cheers
Brian.

[dcoupar]

My M-Code Chart only goes to M362
M76 is Parts Catcher Retract
M77 is Parts Catcher Advance
Could VDIN[24] be the End of Bar signal? I don't have a maintenance manual.

[craven12]

I'm getting to understand some things now I think.
Yes, M77 and M76 are parts catcher adv and ret.
I do a search on the control for M436 and it's blank. Weird!

I think "VDIN[24]EQ 1]" is how many parts till end of bar, and when it sees EQ 1, (last part) it will then go to N100 and perform bar change.

OBAR2
N1 G50 S3000
G0 X22 Z22 M5
T010101
X.200 Z.02 T010101
M84
G4 F8 (pusher does full retract, so it doesn't whip in the sleeve. Slow to advance, hence the 8 second dwell)
M83
G4 F2
G0 Z1
IF [VDIN[24] EQ 1] N100
GOTO NRTS
N100 M77 (parts catcher adv)
M84 (chuck open)
G0 X22 Z22 (turret moves away from chuck)
G4 F8 (pusher pushes new bar 1/2" out of face of chuck pushing remnant from old bar into parts catcher, set by barfeeder settings)

M436 (still don't know)
M83 (chuck close)
M76 (parts catcher ret)
G4 F2 (dwell, prolly not needed, but was there when we got machine)
G0 X.100 Z.02 T010101 (rapids to position)
M84 (chuck opens)
G4 F8 (sigh! wait for pusher to come back and push bar to stop T0101)
M83 (chuck closes)
G4 F2 (dwell)
G0 Z1 (rapids 1" away from part)
NRTS RTS (returns to main proggy)

Thanks for the help guys, this site is awesome.
I still have to figure the barfeeder settings to match this OBAR2 sub program.
The barfeeder manual is converted Italian to english, so it doesn't make alot of sense. Gonna have to call IEMCA monday and talk to support.
Thanks again guys

Craven12

[broby]

Have you tried entering M436 via MDI to see what happens?

[broby]

Just had a look in my handbook, even tho it is quite old and is for OSP5000L-G controllers, it lists the inputs for 23~24 as being for External Inputs (EC), so my guess would be that the statement "IF [VDIN[24] EQ 1] N100" is def looking at the End of bar condition.

[craven12]

Originally Posted by broby Have you tried entering M436 via MDI to see what happens?

Yes sir I did, and it didn't seem to do anything. Still puzzled. Gonna call the rep on Monday and see what he has to say.

Craven12

[broby]

Originally Posted by craven12 Yes sir I did, and it didn't seem to do anything. Still puzzled. Gonna call the rep on Monday and see what he has to say. Craven12

Bummer!
Was really hoping that you would see something happen!
But oh well, like you say... time to call for help from Okuma!
Cheers
Brian. (no "Sir" please!)

[craven12]

Originally Posted by broby Bummer! Was really hoping that you would see something happen! But oh well, like you say... time to call for help from Okuma! Cheers Brian. (no "Sir" please!)

LOL! ok, thanks Brian.

[craven12]

Originally Posted by broby Bummer! Was really hoping that you would see something happen! But oh well, like you say... time to call for help from Okuma! Cheers Brian. (no "Sir" please!)

Got it!

From Okuma: M436 automatic M Code to do a complete bar change and have the part sticking out to the top cut position. (sometimes M336)

Machine has to be in system link mode for this to work.

Finally! lol

[broby]

Hi Craven12,
Well OK then, now we know a bit more about the various codes, your program is basically doing this:

Set Maximum Spindle Speed.
Start from Home posn, Spindle off
Select tool 1
Move to posn 0.02 from machined face
Open the Chuck
Wait for bar feeder to advance
Close the chuck
Wait another 2 seconds
Rapid to Z1
Check to see if Bar Feeder is empty, Jump to reload routine if it is
Jump to end of Sub Program if not empty.
N100 Advance the Part Catcher
Open the Chuck
Move at Rapid to Home Posn
Wait 8 Seconds
Change the Bar
Close the Chuck
Retract the Parts Catcher
Wait 2 seconds
Rapid to end of bar posn?
Open the Chuck
Wait 8 Seconds
Close the Chuck
Wait 2 seconds
Move to Z1
Return from Subprog.


I do have some questions however...
Where is Z0 on the job? Is it at the back face?
What is the length of Bar Feed each run?
Does the part move out of the chuck as the tool moves away, or does the tool move and then the chuck opens allowing the material to move out?
There appears to be no ability in your program to allow for varying the barfeed amount.
Hope you can answer these questions as I am curious to know how it is going.
Regards
Brian.