Sinumerik 840D Probing Help

[Devin M]

Does anyone have some experiance with probing on a 5 axis using a Sinumerik 840D that could guide me through the process?

[JG]

Devin,

 

Do you plan on using the canned cycles? which side of the control do you prefer?

[Devin M]

well, we have the renshaw probe for the machine, but it's never been used. What i would like to do, is setup my trim tool on the machine, probe it to find its actual location, then translate my trim program so it matches where the tool actuly is. i need some help as to how we would use the renshaw probe to find the location of my tools.

[JG]

that sounds completly doable, below is a routine that changes the programs zero (based on variables). is there training available to you? it would make things alot easier.

 

thanks,

 

jg

 

 

note: parenthesis were changed to [], bbs said they are not allowed in a html tag??

 

IF[R16<2]

GOTO N100

ENDIF

 

IF[R13

GOTO N100

ENDIF

 

IF[R19==1]

R9=.5

ENDIF

 

IF[R19==2]

R9=-.5

ENDIF

 

R4=1

R0=20

R18=R12/2

T999

M6

M27

G0 C0

IF[R15<>9999]

A=R15

ENDIF

TRANS X=R10 Y=R11 Z=0 ;<<<<<<<<<<< shift zero

TRAORI

X=0 Y=R18+R9

Z=R13

G1 Z=R14 F300.

WHILE[R4<=R16]

IF[R17==1]

G1 Z=R14

ENDIF

 

MEAS=1 G1 Y=R18-R9 F15.

STOPRE

R[R0]=$AA_MW[Y];R[R0]+$AA_MW[Y]

R0=R0+1

Y=R18+R9 F300.

 

IF[R17==1]

Z=R13

ENDIF

 

AROT Z=[360/R16];*R4

G3 X0 Y=R18+R9 C=IC[[360/R16]] CR=R18+R9

R4=R4+1

ENDWHILE

 

G1 Z=R13

R4=R16

R0=20

R2=R[R0]

R3=R[R0]

R1=0

WHILE[R4>0]

IF[R[R0]>R2]

R2=R[R0]

ENDIF

IF[R[R0]

R3=R[R0]

ENDIF

R1=R1+R[R0]

R4=R4-1

R0=R0+1

ENDWHILE

R1=R1/R16

R2=R2-R1

R3=R3-R1

R1=R1*2

IF[R15<0]

R4=SIN[R15]*R8

R8=R8+R4

ENDIF

IF[R19==1]

R1=R1-[R8*2]

ENDIF

IF[R19==2]

R1=R1+[R8*2]

ENDIF

TRAFOOF

ROT

G0 C0

N100 M30

[Joe788]

I can't help with your question, but I can show you a video of how NOT to use the probe!

 

http://www.youtube.com/watch?v=seLQ5Bo_AIc

[Devin M]

Can you clarify to me what the variables stand for? also, do you have a complete coded program for probign a strait line (probe 2 points, find the angle, rotate by that angle)

 

These are the things I need clarification with:

 

- TRAORI

- MEAS

- STOPRE

- $AA_MW[Y]

- AROT

- TRAFOOF

- ROT

 

What are the variables initialized to at the beginning and which ones?

 

Also, how can you check if the probe is activated (ready to be used)?

How do you turn it on/off?

[JG]

Devin,

I don't think I can give you all that you are asking but....

 

quote:

---

Also, how can you check if the probe is activated (ready to be used)?

How do you turn it on/off?

---

On this particular machine it is turned on automatically when called, it can also be turned on by a M27 code.

 

quote:

---

What are the variables initialized to at the beginning and which ones?

---

That depends on the program and what you need, I did not list the ones that were preset, this was meant as an example.

 

quote:

---

These are the things I need clarification with:

 

- TRAORI

- MEAS

- STOPRE

- $AA_MW[Y]

- AROT

- TRAFOOF

- ROT

---

TRAORI = TRAnsformation and ORIentation (dynamically), it is tool point programming, if you rotate the table

(on a head/table config for example) the tool tip will "follow" automatically maintaining the same relative position.

 

-MEAS = enables measuring mode on the control (G31 skip signal)

-STOPRE = STOPREading ahead, prevents the control from buffering to far ahead.

-$AA_MW[Y] = reading the Y axis position after the probe triggered.

-AROT = Additive ROTation of the WCS

-TRAFOOF = shuts traori off

-ROT = ROTation of the WCS

 

quote:

---

Can you clarify to me what the variables stand for?

---

I would have to go thru and re-figure them myself, this macro was used to probe dia's that the machine could not reach using X and Y, it rotated the part instead.

 

quote:

---

do you have a complete coded program for probing a strait line (probe 2 points, find the angle, rotate by that angle)

---

I don't, that was a canned routine in the control (I no longer have access to the control)

 

hope this helps, I'll look and see if I have any other info.

 

thanks,

 

jg

[Devin M]

were you able to find otu any more information? this will become very valueable to our company very soon.