Probing macro for B-center on Okuma P300?

[danielm]

I'm guessing that this is close to asking for a post....but would anyone care to donate a macro for finding B-center on an Okuma using a Renishaw probe and sphere?

 

 

Thanks in advance...

DM

[mkd]

What's a B-center? lol

what kind of okuma?

[danielm]

ok.  to clarify.    Okuma  MB4000H  .  Horizontal milling machine.   Hope that someone would share a macro that probes a sphere to pick up 3 points and calculates the center of rotation for the b axis.

 

 

Thanks.

[jlw™]

I can show you some samples but they are all Siemens or Mazak.  Never really touched an OSP control.

[Guess_who]

From an old comment for 5th axis, but this works just as good for 4 axis. You'd change the positions from Y&Z to X&Z

from this comment  CHECK HERE

 

On 3/6/2018 at 7:24 AM, Guess_who said:

If anyone cares, I created a similar program to find the -Y- and -Z- centerline based on 3 points. 

Basically, store the following variables then run the below code. It will set your 19700's. 

#750= 1st Y position

#751= 1st Z position

#752= 2nd Y position

#753= 2nd Z position

#754= 3rd Y position

#755= 3rd Z position

 

 

(MATH TO CALCULATE CL OF Y IS WITH 3 POINTS) 
#101=[[#750*#750]+[#751*#751]]*[#753-#755] 
#102=[[#752*#752]+[#753*#753]]*[#755-#751] 
#103=[[#754*#754]+[#755*#755]]*[#751-#753] 
#104=#101+#102+#103
#105=#750*[#753-#755]
#106=#751*[#752-#754]
#107=#752*#755 
#108=#754*#753 
#109=2*[#105-#106+#107-#108] 
#763=#104/#109( CALCULATE Y CENTERLINE)
#763=#763*100000 

(MATH TO CALCULATE CL OF Z IS WITH 3 POINTS) 
#101=[[#750*#750]+[#751*#751]]*[#754-#752] 
#102=[[#752*#752]+[#753*#753]]*[#750-#754] 
#103=[[#754*#754]+[#755*#755]]*[#752-#750] 
#104=#101+#102+#103
#105=#750*[#753-#755]
#106=#751*[#752-#754]
#107=#752*#755 
#108=#754*#753 
#109=2*[#105-#106+#107-#108] 
#764=#104/#109( CALCULATE Z CENTERLINE)
#764=#764*100000 
 
M00( PRESS START AGAIN TO UPDATE 19700 ETC)
( PRESS START AGAIN TO UPDATE 19700 ETC) 
(UPDATE 19700) 
G10G90L52
N19701R#763
G11
G10G90L52
N19702R#764
G11

 

 

[danielm]

55 minutes ago, Guess_who said:

From an old comment for 5th axis, but this works just as good for 4 axis. You'd change the positions from Y&Z to X&Z

from this comment  CHECK HERE

 

I'm pretty new to Okuma Macro lingo.....Its completely different than FANUC.    

Appreciate the tips tho.   

I'm sure that there's an OSP program that probes a sphere in three different B angles and then calculates for the center of rotation.   Im needing it more to educate myself  OSP macro logic than actually needing it for a job.     Hopefully I can find one.

 

Again....Thanks.

 

55 minutes ago, Guess_who said:

 

 

[Guess_who]

55 minutes ago, danielm said:

 

I'm pretty new to Okuma Macro lingo.....Its completely different than FANUC.    

Appreciate the tips tho.   

I'm sure that there's an OSP program that probes a sphere in three different B angles and then calculates for the center of rotation.   Im needing it more to educate myself  OSP macro logic than actually needing it for a job.     Hopefully I can find one.

 

Again....Thanks.

7

 

Well, I'm no Okuma expert, but the macro math is the same. I believe Okuma can set anything as a variable , but mainly they use VC1 thru VC199

But you can also set anything as a variable like RAY1 or RAY2. Whatever

So change #101 to VC1, and change #102 to VC2, etc. And most other things are the same like EQ, LT, LE. GOTO

Does that all make sense?  

EDIT - I think I can convert this for you if you want. 

 

Try this, I think it will get you close. Your centerlines will be stored in V63 and V64

V50= 1st X position

V51= 1st Z position

V52= 2nd X position

V53= 2nd Z position

V54= 3rd X position

V55= 3rd Z position

(MATH TO CALCULATE CL OF Y IS WITH 3 POINTS) 
VC1=[[VC50*VC50]+[VC51*VC51]]*[VC53-VC55] 
VC2=[[VC52*VC52]+[VC53*VC53]]*[VC55-VC51] 
VC3=[[VC54*VC54]+[VC55*VC55]]*[VC51-VC53] 
VC4=VC1+VC2+VC3
VC5=VC50*[VC53-VC55]
VC6=VC51*[VC52-VC54]
VC7=VC52*VC55 
VC8=VC54*VC53 
VC9=2*[VC5-VC6+VC7-VC8] 
V63=VC4/VC9( CALCULATE Y CENTERLINE)
 

(MATH TO CALCULATE CL OF Z IS WITH 3 POINTS) 
VC1=[[VC50*VC50]+[VC51*VC51]]*[VC54-VC52] 
VC2=[[VC52*VC52]+[VC53*VC53]]*[VC50-VC54] 
VC3=[[VC54*VC54]+[VC55*VC55]]*[VC52-VC50] 
VC4=VC1+VC2+VC3
VC5=VC50*[VC53-VC55]
VC6=VC51*[VC52-VC54]
VC7=VC52*VC55 
VC8=VC54*VC53 
VC9=2*[VC5-VC6+VC7-VC8] 
V64=VC4/VC9( CALCULATE Z CENTERLINE)