[deadlykitten]

Hello, i prepared an sk22-t with air dryer included (dscn0057.jpg) + 1000liters recipient/tank(dscn0056.jpg) before installing the MB66VB with bt50shank.

After the mill started working into production regime, the sk22-t unit started to work almost non-stop

The dealer told me that the mill uses air only when it changes tools, or if i use air thru/near the spindle when cutting.
But the mill always uses air, even if it does nothing ... so, after talking again with okuma dealer, he said that it uses air constantly to grease the main spindle.

The sk22-t works between 7-8 bars ... i was told that i can also adjust the watch located on mills back (dscn0050.jpg), but i did not messed with nothing ... please, how should i adjust sk22t and the tiny watch ? maybe i can make that sk22t take a break, and i think that 1000liters tank is big enough ...

this is a chart for sk22t
14.10 start
14.15 stop
14.18 start
14.22 stop
14.22 start(same moment)
14.27 stop
14.30 start

kindly !

[OkumaWiz]

Check the parameters for the spindle. I think that there is a parameter that will shut off the spindle air purge when the spindle is not running. Older machines did not have this parameter, but the newer ones should - probably E-100 and newer.

Best regards,

[deadlykitten]

hello, i changed compresor range from 7..8bar to 5.4..8bar
this happened ~1 month ago

i have a label on mill's back that sais not to drop pressure under 5bar ... is says actually 0.5mpa, but google is good

this reduced the number of start-stops for the compresed_air_unit ... and now it starts from time to time, and i have no more the feeling that it goes non-stop

[deadlykitten]

Check the parameters for the spindle. I think that there is a parameter that will shut off the spindle air purge when the spindle is not running. Older machines did not have this parameter, but the newer ones should - probably E-100 and newer.Best regards,

Hello again, after 1-2 weeks from when changed compresed_air_unit domain, i have observed that most of BTshanks were rusty.

This should have no connection with the compresed_air, and the service team told me that there was no oil-air blown from spindle when tools were changed.

They fixed this, and now the spindle blows as crazy - i think they put it on max ... i don't know, maybe is optimal, but it is loud

Also, when machine is not moving, i can hear how the air circulates inside it ...
Like this, even if it is not moving, it consumes 0.7bars in 10minutes.

I discused about what you said, to shut off the spindle air purge when the spindle is not running, but i received no solution : i was told that it must work like this, and i can just reduce power_save_timer. They told me that air keeps inside an oil mist, so to be lubrication when spindle starts ... i guess it is a bit too much, and i think that is enough for the air to work only when spindle rotates, and maybe some time after, but not always.

I measured some part yesterday, so machine was on for ~1 hour, and it was consuming air for nothing, because spindle was not rotating

I started to look into parameters area ... i found something about oil-mist, and i attached these pages.
Also, there is a movie with all parameters, just in case
Please, can you help me locate the needed parameter ?
Please ?

kindly !

[deadlykitten]

i insisted again at dealer ...

[Algirdas]

Did you checked if the compressed air is dry? Hold your palm on air flow for twenty seconds and you will see. Drain water from compressed air system . . .

[Algirdas]

.

[OkumaWiz]

Which control are you on? Please show the spindle parameter pages, I only see 1,2 and 4 out of 5. I think it may be on the un-shown pages. I also think that #21 Air purge after spindle stop of 120 min may be excessive. Try to set to 1 minute to see if purge quits properly. I think you will want something more like 5 min.


Best regards,

Never mind, I saw your movie of parameters...missing pages were there. Stick to #21 and adjust to 1 minute to test.

I may be at a customer tomorrow with a similar machine that I could look at, so please let me know which control soon.

[deadlykitten]

...

hy, yup, is #21 ... i set it to 3 minutes; thank you ! again !

during testing :
- i also changed #13, i input 1 instead of 60; i thought that #21 is the ON timer, and #13 the OFF timer
- after spindle stopeed, air still blow for #21=3 minutes, and after that it stopped blowing
- i thought that will start again after #13=1 minute, but did not ... so, how i can not see what behavior this #13 targets, i put it back to it's default value of 60 minutes
- also, just to be sure, i checked while rpm is on, and air did not stop
- variable change - machine OFF / ON - test so to be sure

- air pressure drop :
....10 minutes ... 0.7bar ( before )
....45 minutes ... 0.1bar ( now )


what happens actually inside that spindle ?
i guess it uses air to cool it up ?
and from time to time it mixes air with oil to lubricate the spindle ?
and why was #21 set to 120minutes ? hope is safe to put it to 3 ... diference is huge, and i just hope there will be no side effects

about this #21, is translated from japanese i think a bit confusing :
....oil air lub output time after spindle stop
....oil air lub output duration after spindle stop
....oil air lub duration after spindle stop > this is short and clear
during a few days, all interfaces from one lathe changed automatically from english to nort_pole language i guess there was a quiet update, so to say, and i got lucky because i remembered what buttons to press without the need to read them ... but, even it was my native language, god what a lame translation ... i reversed it to english

time is not a measuring unit, is just time
when something happens, it starts at a specific moment and it lasts for a specific duration
time is a flow, and what happens should be reffered as moment / duration, not as time

kindly ! is time 4 me to go

[deadlykitten]

Did you checked if the compressed air is dry? Hold your palm on air flow for twenty seconds and you will see. Drain water from compressed air system . . .

hello mr bunny i checked a few weeks ago if there is water in the air recipient from the underneath valve, and there was none ... thank you for the tip with the palm

i don't think this aspect is connected with the problem, but besides that, i also swept arround the mill, and turn on the lights

[deadlykitten]

besides stuff from post9, after air has stopped, it is restarted only by rotation and power OFF-ON, while reset button/emergency stop/G0/G1, won't restart the air flow

so, mixed with M130 ( ignoring rotation while G94 ), you can use the mill for stuff like measuring w/e

M131 will cancel that