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Weak air blast for Haas dual spindle lathe transfer

GiroDyno

Hot Rolled
Joined
Apr 19, 2021
Location
PNW
We have a DS30SS and DS30SSY, both have the same pitifully weak air blast for both spindles. Its so weak we actually can't use it, because the hoses catch chips and drop more onto the chucks than they blow away.

I plumbed shop air to the main/sub valves so they both have full 150PSI shop air vs. 90PSI machine air, but it's still pretty lame.

Anybody else have this issue? Workarounds?

I'm trying to reduce scrapped parts due to chips on the jaws during transfers from main to sub. Right now we have coolant hoses on the turret aimed at the chucks to wash away chips, and run the spindles at a few hundred RPM while transferring to fling off chips but it isn't bulletproof by any means. The coolant flow is equally as weak as the air, but the hoses aren't a problem hanging off the turret so its kinda-sort-maybe-marginally better.
 
can you change your workflow? i have recently changed my programs round so the sub always holds a part.
so instead of
opp1
part off
opp2
drop off

we have been doing
opp1
drop off
part off
opp2

it means that you have one part in the sub chuck at the end of the run, but it's quicker for us and the jaws are only open for the second or so between parts.
 
We have a DS30SS and DS30SSY, both have the same pitifully weak air blast for both spindles. Its so weak we actually can't use it, because the hoses catch chips and drop more onto the chucks than they blow away.

I plumbed shop air to the main/sub valves so they both have full 150PSI shop air vs. 90PSI machine air, but it's still pretty lame.

Anybody else have this issue? Workarounds?

I'm trying to reduce scrapped parts due to chips on the jaws during transfers from main to sub. Right now we have coolant hoses on the turret aimed at the chucks to wash away chips, and run the spindles at a few hundred RPM while transferring to fling off chips but it isn't bulletproof by any means. The coolant flow is equally as weak as the air, but the hoses aren't a problem hanging off the turret so its kinda-sort-maybe-marginally better.


Bigger air line, bigger valves, and bigger nozzles?
You can find any of these in Dallas.


-----------------

Think Snow Eh!
Ox
 
can you change your workflow? i have recently changed my programs round so the sub always holds a part.
so instead of
opp1
part off
opp2
drop off

we have been doing
opp1
drop off
part off
opp2

it means that you have one part in the sub chuck at the end of the run, but it's quicker for us and the jaws are only open for the second or so between parts.
This is not a barfed application, were holding slugs 7-11" diameter and 1/5-3" thick, holding them in pie jaws.
We transfer the part back and forth between chucks, load in the sub for a cleanup so it sits nicely in the jaws, transfer to main to do the heavier material removal, handoff back to sub to finish side 2.

@Ox The offending air lines are 3/8" (1/4" ID) from the valves, and the valves themselves have 1/8" NPT ports, so I'll try swapping them with 1/4" ported valves.

Really hoping somebody with a similar (read: poorly designed) machine would chime in and have a specific fix vs my everything-but-the-kitchen-sink approach.
 
I don't know that I have ever used air blast?
Air is going to blow it off here and deposit it there.

If it were me, I would put my efforts into coolant flush.
Coolant doesn't need a whole lot of pressure to flush, just volume and a slow turn of the spindle.


----------------------

Think Snow Eh!
Ox
 
Actually, all you likely need to doo is to point the coolant nozzle from a non-used turret position towards the chuck.
Position the turret and spin the chuck a few revs.


-------------------

Think Snow Eh!
Ox
 
Actually, all you likely need to doo is to point the coolant nozzle from a non-used turret position towards the chuck.
Position the turret and spin the chuck a few revs.


-------------------

Think Snow Eh!
Ox
Thats what we do, except the coolant blast is weaker than the air blast, it just has the advantage of not catching and dropping chips onto the chucks.
If the larger ported air valves don't work I may plumb the coolant pump to the valves for the air blast so I can use the same M-codes and run some different coolant lines that hopefully get me higher pressure.
 
what about reversing the direction of rotation a few times before syncing? just spinning the jaws might be holding the chips to the jaws, but the acceleration and deceleration might flick them off.
 








 
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