[cjhayes]

Can anyone help me on being able to rigid tap using the sub-spindle.
Machine is a Mori-Seiki SL150SMC (Fanuc 18). I am able to rigid tap
using the main spindle by M329 and then a G84 cycle. Fanuc manual
says rigid tapping is available for the "second" spindle if control
has the multi-spindle control option - which I am positive this machine
has. Also states spindle used for rigid tapping is based on values in
G027 bit 0 and bit 1 (Both are 1, changing bit 0 to 0 would indicate to
use the sub-spindle. A review of the ladder doesn't show any reference
to G027. Anyone know how to change this to enable rigid tapping on the
sub-spindle?

Thanks

[STLMachinist]

G027 might be changed in a function block or with a coil. Have you searched the ladder for both?
Search G027 for function block
W-Search G027.0/1 for coil.

[cjhayes]

G027 might be changed in a function block or with a coil. Have you searched the ladder for both?
Search G027 for function block
W-Search G027.0/1 for coil.

Thanks for the reply...

The spindle selection signals SWS1 & SWS2 are G027.0 and G027.1.
After searching the ladder, unfortunately both G027.0 and G027.1 are
"latched" to an internal relay of R48.0 which is logic "1" for the entire ladder.

The only other route I can see may help is changing parameter 5200.7 (SRS)
to 1 so that the rigid tapping spindle selections signals (RGTSP1 & RGTSP2)
are used instead of SWS1 & SWS2.

RGTSP1 and RGTSP2 are G061.4 & G061.5.

The roadblock now is G061.4 & G061.5 aren't even in the current ladder.
Is there anyway to add to the ladder a 'latch' of G061.5 to R048.0 (logic "1)".
If I could do this, then when parameter 5200.7 is 0, the SWS1 & SWS2
signals would be used, and thus rigid tap with the main spindle.
When parameter 5200.7 is 1, the RGTSP1 & RGTSP2 signals would be
used, and thus rigid tap with the sub-spindle.

Thanks,

[STLMachinist]

R48.0 doesn't have a rung of it's own? Weird.

What do you have in PRM 9936?

[cjhayes]

R48.0 doesn't have a rung of it's own? Weird.

What do you have in PRM 9936?

I appreciate your help....

Parameter 9936 is: 1 0 1 1 1 1 0 0

bit 0 - 0
bit 1 - 0
bit 2 - 1
bit 3 - 1
bit 4 - 1
bit 5 - 1
bit 6 - 0
bit 7 - 1

Thx...

[STLMachinist]

OK, just wanted to verify you did, in fact, have multi spindle control. What happens when you command the sub-spindle with M329 G84?

Also,
What is parameter 3709.2? 3701.4?

[cjhayes]

OK, just wanted to verify you did, in fact, have multi spindle control. What happens when you command the sub-spindle with M329 G84?

Also,
What is parameter 3709.2? 3701.4?

Thank you for your reply....

This is the sequence when rigid tapping
(right hand threads) on the main spindle
(works very well).
(1/2-14 NPT)

G0 X0.0 Z0.750
G0 Z0.050
M329 S65
G84 Z-0.940 P500 F0.0714
G80
G0 X0.0 Z0.750
G0 G28 U0
....etc.

If I add an M203 to the M329 S65 line,
the subspindle will come on and rotate at
65 rpm until the Z-axis reaches -0.940, then
the main spindle comes on (sub-spindle stops
and does not rotate) when retracting the tap.
(I don't think either spindle is "rigid tap" sync'd
to the z axis during this, but the main spindle
may be on retraction just not sure)

Parameter 3709.2 = 1 (MSI)
Parameter 3701.4 = 1 (SS2)

Thanks again for all of your help....

[hotiron]

Did you get this figured out. I am having the same issue on an identical machine