[tc429]

never done rigid tapping, but wonder if simply fudging the spindle offset at 539 by a little to cause creeping at zero speed would do it? orient uncouples the reference,so it shouldnt affect that, just wondered if it was moving slightly if it might take off...

[Behnod]

Dear tc429 you mean fudging the spindle by changing the parameter 539 .

its value is :
N0539 P 00000000

what should it be changed to ?

[landslide1]

Thank guys for your kind and quick replies .

we used to use this program for rigid tapping before . but an electrical defect caused parameters lost . we restored the parameters and now everything work well except rigid tapping.
i think the program needs a signal or waiting for a command to do rigid tapping .

the parameters related for tapping on OM .

19#4 =1 signal 135 or 123
256=29 M code
911#2=0 rigid tapping


do you think there may be a problem with a parameter or hardware ?

regards

I think you have parameter troubles. my machine never had rigid tapping enabled. I switched it on in the spindle drive parameters F31=1. my machine recognizes M29 but exhibits the same behavior you machine has.
911.2=0 on my machine too. this is supposed to be 1 if the machine is optioned with rigid tapping. I can't change this bit on my machine 0m-a.

try changing this bit. and also check the spindle drive parameters F31 should be =1.

[Behnod]

Thanks landslide
The parameter 911#2 can be changed in this machine .in this case It's active when it's value is set to 1 . But about F31 I didn't understand what you exactly mean because there is no parameter named F31 in this machine .
Regards

[landslide1]

the spindle parameters are in the drive board. even if it looses power they stay resident.
maybe you have a more modern systems without the spindle drive parameters. if you look at the spindle drive board and there are 4 multi segment led displays and 4 buttons next to them mode, up/down arrows and data set. you hold down all 4 untill FFFF is displayed the hold mode and press the arrow to step through the parameters.
FANUC-PAGE-8

[landslide1]

also check diagnostic 700 while the tapping cycle is being executed. when mine pauses it is saying it is doing an in position check.

[Behnod]

Dear landside1
The machine is busy now . I will change the parameter as soon as possible and tell you the result .

[Behnod]

sorry for delay .
dear Landside i checked the parameter F31 . it's value was set to 1 .
but about DGN 700 .
at normal condition it is 00010000
when starting rigid tapping it changes to 00000010
and when it hangs it changes to 00001000
i don't have the diagnostics manual and don't know what it says.
is it possible for me to find the manual for diagnostics .
thanks

[landslide1]

sorry for not responding sooner

Diagnostic 700

700 bit 6: The M, S, or T function is being executed.
700 bit 5: A move command in the cycle operation is being executed.
700 bit 4: Dwell is being executed.
700 bit 3: An in-position check is belng executed.
700 bit 2: Override is at 02.
700 bit 1: Interlock signal (STLK) is turned on.
700 bit 0: Speed arrival signal of spindle i-s turned on.

these are from an om-b manual so they may have changed on newer controls but these are usually kept the same and new diagnostics added else where. the last one is the in position check. so it is hanging where it needs to confirm it's position. could be an encoder issue?

if the machine was originally optioned with rigid tapping (unlike mine) you would expect the ladder and software to have rigid tapping sorted. on mine since it never had it optioned ,and I'm turning it on myself, I have a feeling that the software isn't capable of rigid tapping. or it could just be my encoders, but I can't afford to experiment with replacing encoders to see if that fixes the in position check.

[Behnod]

-----SOLVED------
It finally started working
Thank to dear Landside’s guidance the problem solved .
There was a parameter problem which didn’t let rigid tapping work so .It was doing position checking when performing rigid tapping .
I changed the parameter 20#5 to 1 (do not execute position check ) and it started to work .
Thank you all who replied to this thread and helped me and special thanks to land side 1 for his great clues that helped me find the problem .
Best Regards

[KQHung]

Dear ALL,

I need rigit tapping and searched it for quite sometimes. Tonight I met this and it may help me very much.

But for sure I just want to know if the OKK MCV-500 with fanuc OM-B (mainboard serie: A16B-1010-028/06A), manufactured 1988, has rigid tapping option? In 911.2 I had changed to 1.

Thank you very much in advance. Tomorrow morning I will tried more what I've learnt from here.

MARRY CHRISMAS AND HAPPY NEW YEAR TO ALL!

Hung

[admin]

i get ex1040 main spindle rigid tap command alarm.
when i run one cycle it work fine but when i start continue cycle than after every single part it keep giving me alarm. the fanuc control is 31i.
my program is
t232 m103 s600 p1;
g95 g18 g97;
g0 y0;
g0 x0;
m105;
m29 s600 p1;
g84 z-.350 p100 f.0312;
g80;
g0 z.200;
m105;