[LUX93]

I'm having trouble getting my spindles to sync RPMs, I normally do it when picking up a part and parting off, but in this case I am chucking a center in the sub and using it to steady a thin part for turning. I tried using M203 but get a alarm about my chuck condition, I assume it's because it's in closed position. So, just to get the parts going I used M206 for each spindle which sucks but works, only problem is when I call up my tool geometry, T1212, I get an alarm saying tool offset not allowed in polygonal mode?

Old Code:
N5
( SUB SPINDLE ON PART )
G18
G0G30U0V0
G30W0B0
T1212
G97S500M3
G55G0Z-2.125
G97S500M203(<--- alarm )
G0B-18.5
M86
G1G98B-19.13F10.
G99
M87

N6
( TURN OD - VNMG NEUTRAL )
G18
G30U0.V0.
G30W0.B0.
T1212
G50S3600
G97S2193M3
/M8
G55G0X6.Z.05
G96S600
X1.
X.375
G99G1X.235F.005
Z-1.375F.006
G0X.375
Z.05
X.25
G1X.218
Z-1.375F.004
G0X6.M9
G30U0.V0.
G30W0.B0.
T1200
M1

Current Code:
N5
( SUB SPINDLE ON PART )
G18
G30U0V0
G30W0.B0.
T1212
G55G0Z-1.
G50S3000
M206
G96S500M3
M206
G96S500M103
G0B-16.6
M86
G1G98B-16.827F10.
G99
M87

N6
( TURN OD - VNMG NEUTRAL )
G18
G30U0.V0.
G55G0Z-.5
T1212 (<---- alarm )
G50S3600
M206
G97S2193M3
M206
S2193M103
/M8
G55G0X6.Z.05
X1.
X.375
G99G1X.235F.005
Z-1.375F.006
G0X.375
Z.05
X.25
G1X.218
Z-1.375F.004
G0X6.M9
G30U0.V0.
T1200
M1

[Heavy_Metal]

Hi,

We own a Doosan Z290SMY and with both spindles closed we can syn. turning/milling.
Maybe you can try something like this;

N1( TEST )
G18
G00G28U.V0.
T0303G99
G50S1500
M43( SPINDLE SYN. CONTROL ON - SPEED )
G97S500M3
/M8
G0X240.Z50.
-------
-------
G0Z25.
M9
M42( SPINDLE SYN. CONTROL OFF - SPEED )
M5
G0G28U0.
G28V0.
M1

Heavy_Metal
The Netherlands

[LUX93]

Thanks HeavyMetal, I'll try and mess with it, been having problems with another machine so I'm jumping all over this week. I'll post my results as soon as I a chance.

[LUX93]

I ended up modifying a live center to chuck up. Now my problem is with the torque skip, the machine keeps alarming because of the pressure sensor. There is supposed to be a sub-program for using G300 to adjust the pressure against the center. The program is not in the machine and I don't know what the format looks like. The command is supposed to be G300 -200 ( -200 = 20% of max pressure ) Cancel with G301. Anybody have any idea what the macro looks like or possibly have a copy?

[yatin555]

Hello!

I understand your problem and suggest to use M131-sub/right spindle clamp/unclamp bypass command (M31 for left/main spindle) before synchronous command.

Please try and give feed back.

Regards,

Yatin

[yatin555]

Hello!

G300 is optional torque skip function and if you need then you have to contact local Doosan office.

Insted of this you can search torque D parameter from PLC and increase its value. Generally D para for torque is D472 but this is not safe in case of some accident in machinne it will damage more.

you can use your previous method with M31/ M131 by skip chuck open close command.

[Don18P]

Just a thought, are both spindles in the same gear range?

That was what I encountered.