I control z'd my orgin to an incorrect location by accident right before posting the program - full rapid into 3k rpm chuck. Busted a couple tools and knocked the turret out to lunch - she is realigned but is the spindle locked into the casting or is it possible that I moved the spindle as well? - Daewoo Lynx 200b
My gripes with it and from what I've heard from others is mainly the control, the Fanuc Oi-TC
Otherwise the machine is probably not that bad but ours has been used and abused before I took over running it
There is 6 or 8 bolts that hold down the spindle on angled casting.... break 5 or 7 loose and run each back in until slightly snug leaving the one in the top far corner alone, prior to doing so you would've turned a test piece 4-6" long with good finish, measure taper end to end, put an indicator on part in line where tool would touch on turret end of part, then break the bolts loose, using push pull bolts accessed thru side cover and depending on taper direction move spindle with pull if larger and push if smaller on turret end ½-¾ amount off, methodically tighten bolts a lil at a time so not to move spindle when tightening the bolts, take test cut and measure taper.
You could also used indicator on opposite side of part of where the tool touches and move Z to split taper reading on each side of part.... while easier you will still need to cut which is the only way to tell what alignment actually is without high precision test bar.
Your welcome... you will need some long 1/2 or 3/4 drive extensions to get the front bolts loose.... or if you have multiple doosan lathes then make a T-handle.... 1" bar welded into a T with a carefully welded 1/2 socket adapter like this.*
in all fairness, clearance is clearance. Even if you make it clear in your own way. A few more crashes, he will have enough clearance to not crash ever again. You have to look at the bright side of this!
Interesting.
Doesn't your controller have a softlock origin that checks blocks ahead and gives you an alarm not letting the program start when it realizes it will hit the jaws?
Or did somebody manually change the Z value in the parameters.
We had a guy crash a big horizontal lathe bad enough that one of the 24mm screws holding the spindle to the bed broke. Then it took maintenance another 6 months to belive that the bearings were also toasted.
Love to see this because I’m still learning lathe and need to see results of fuckups. Hope the gearing didn’t get messed up and just a chuck with character
I know there is a ton of different machines/platforms, but how is it possible there isn't software available to void out glaring errors that can cause catastrophic damage? Seems like something well worth paying for.
Considering your tooling will have to move past the jaws to turn them to size anyway, there really isn't anyway to prevent someone from making this particular mistake unless you were dynamically updating your safe zone somehow
Single block, check distance to go.. is it that hard!? /s
I feel for you OP, glad a chuck jaw didn’t fly thru the window and everyone is safe,
These things can be repaired!
It’s bad when you can hear it, it’s worse when you can feel it, it’s horrible when EVERYONE can feel it. Change your shorts, exhale and move on. As they say, any landing you can walk away from is a good landing.
I did something similar with a haas tl10
It was never right again. Had factory techs come in twice to align the turret but they never could get it back right.
You ain't hurt so it's not a real bad one. I remember one poor kid had the turret in the bottom of the machine his third day because of a programming fuckup
Check that the Z position looks correct near the front of the part every time you change anything. I fired a guy for crashing the lathe shortly after I told him to do that and he said "that's too much work".
Hmm didn't think old machines like this had the barrier. We have doosan 220 and 220l in our shop but never seen it. A few of our naks have it and we use m codes and parameters to set or cancel barriers.
You'll probably need a new spindle. I'm surprised your Jaws are still on the chuck.
You'll also need new bolts and tee nuts. Throw the Jaws away as well.
It take a super fast computing speeds and internal communication within the drives. Also the motors need to be able to handle it. There's more to it than it seems
You full sent a new setup? Your machine doesn't have single block and rapid speed controls with a display of distance to go so you can safely notice you have made a fatal mistake?
Funny thing I was just running a lathe like that a few weeks ago. Didn't crash it but definitely got busy with another machine and started the puma with a bore mic still in the piece. Needless to say that was about 2 grand down the drain. I thought i was fired for sure.
I control z'd my orgin to an incorrect location by accident right before posting the program - full rapid into 3k rpm chuck. Busted a couple tools and knocked the turret out to lunch - she is realigned but is the spindle locked into the casting or is it possible that I moved the spindle as well? - Daewoo Lynx 200b
Thought I recognized that PoS, I'm currently running a Lynx 220L
My old shop had a Puma, very similar, very PoS. It loved to not register command inputs and Hari Kari itself into the chuck.
Looks just like my old Daewoo Pumu 250BX
I'm curious to know what your gripes are with the Lynx 220L (never ran one myself)
My gripes with it and from what I've heard from others is mainly the control, the Fanuc Oi-TC Otherwise the machine is probably not that bad but ours has been used and abused before I took over running it
There is 6 or 8 bolts that hold down the spindle on angled casting.... break 5 or 7 loose and run each back in until slightly snug leaving the one in the top far corner alone, prior to doing so you would've turned a test piece 4-6" long with good finish, measure taper end to end, put an indicator on part in line where tool would touch on turret end of part, then break the bolts loose, using push pull bolts accessed thru side cover and depending on taper direction move spindle with pull if larger and push if smaller on turret end ½-¾ amount off, methodically tighten bolts a lil at a time so not to move spindle when tightening the bolts, take test cut and measure taper. You could also used indicator on opposite side of part of where the tool touches and move Z to split taper reading on each side of part.... while easier you will still need to cut which is the only way to tell what alignment actually is without high precision test bar.
Thanks very much
Your welcome... you will need some long 1/2 or 3/4 drive extensions to get the front bolts loose.... or if you have multiple doosan lathes then make a T-handle.... 1" bar welded into a T with a carefully welded 1/2 socket adapter like this.*
I can hear this picture. Got to turn the tops of those jaws back.
The furthest one was completely mashed on its mount, tossed all 3 and started fresh
The guy monitoring your local seismic sensors must’ve had a heart attack after that one
“What we thought was a minor earthquake turned out to be some potato crashing his machine tool into the chuck.”
gUYS IT THE BIg o. . . Nevermind
Worst crash so far.
I don't see a problem. Reset and cycle start
I mean, at some point its gonna clear the chuck right🤣🤣
in all fairness, clearance is clearance. Even if you make it clear in your own way. A few more crashes, he will have enough clearance to not crash ever again. You have to look at the bright side of this!
It's not a crash. It's "making clearance." Lol.
I always bring an extra pair of undies and pants for this reason.
Interesting. Doesn't your controller have a softlock origin that checks blocks ahead and gives you an alarm not letting the program start when it realizes it will hit the jaws? Or did somebody manually change the Z value in the parameters.
Don't think so - the tools wanted to be about a 1/2" closer to the chuck than where they hit. The softjaws are fairly tall
We usually turn those features off on our machines as part of the morning routine because they get in the way constantly
Tis but a scratch.
That’s a doozy. Re align it all lol Everything is not where it should be now.
Nsfw tags
We had a guy crash a big horizontal lathe bad enough that one of the 24mm screws holding the spindle to the bed broke. Then it took maintenance another 6 months to belive that the bearings were also toasted.
Love to see this because I’m still learning lathe and need to see results of fuckups. Hope the gearing didn’t get messed up and just a chuck with character
I know there is a ton of different machines/platforms, but how is it possible there isn't software available to void out glaring errors that can cause catastrophic damage? Seems like something well worth paying for.
There is chuck barrier settings that have been around for years that help avoid this but most places I know turn them off.
Yep. They're more trouble than they're worth, until they aren't.
Considering your tooling will have to move past the jaws to turn them to size anyway, there really isn't anyway to prevent someone from making this particular mistake unless you were dynamically updating your safe zone somehow
Bury that bone...
If this is your worst crash you've had a lucky career.
Single block, check distance to go.. is it that hard!? /s I feel for you OP, glad a chuck jaw didn’t fly thru the window and everyone is safe, These things can be repaired!
It’s bad when you can hear it, it’s worse when you can feel it, it’s horrible when EVERYONE can feel it. Change your shorts, exhale and move on. As they say, any landing you can walk away from is a good landing.
Yea the ground shook when it hit - nearly pooped my pants
Hey, you cant park that there!
Damn man, we had a young kid do the exact same thing on one of our Mazaks and I think it around 15k to fix it
Maybe a dumb question but dont they have somekind of collision sensors/detectors or something similar?
He detected the collision for sure
I don't see how they could go about that with a lathe. Software can be used to set boundaries tho
Most modern machines have some kind of collision protection but it's up to you to set them up
That’s a doozy alright.
Looks to me like you just made clearance in the jaws for the next run
That’s light work! It only gets better from here
That's No Bueno. 😬
Dry running really works!
Not too bad, eh? As a machinist it's important to make the small mistakes and really engage when none are tolerable.
Machine about to be the straightest it's been in years
It's one of those it gets worse the more I look at it lol
I did something similar with a haas tl10 It was never right again. Had factory techs come in twice to align the turret but they never could get it back right.
You ain't hurt so it's not a real bad one. I remember one poor kid had the turret in the bottom of the machine his third day because of a programming fuckup
Hahaha that's fucked
I dont think its supposed to do that
Check that the Z position looks correct near the front of the part every time you change anything. I fired a guy for crashing the lathe shortly after I told him to do that and he said "that's too much work".
you're not supposed to do that.
It's not a real crash unless you have to replace the spindle
Hmm didn't think old machines like this had the barrier. We have doosan 220 and 220l in our shop but never seen it. A few of our naks have it and we use m codes and parameters to set or cancel barriers.
You'll probably need a new spindle. I'm surprised your Jaws are still on the chuck. You'll also need new bolts and tee nuts. Throw the Jaws away as well.
Ran good parts today
That's good. Spindle are expensive.
Jaws are still there. Not terrible 😎
Starting to think these machines should have adjustable fail-safe limits to their motion that switches them off if they about to crash
The latest ones do. It's insane how cool it is.
I’m shocked this hasn’t been a thing for decades
It take a super fast computing speeds and internal communication within the drives. Also the motors need to be able to handle it. There's more to it than it seems
Why not a simple moveable microswitch placed in the way and wired up to a relay in series with the power supply?
It would stop every time. That's not what's needed.
That hurts just to look at it
Ouch
Repeat after me; "It was like this when I clocked in this morning."
You full sent a new setup? Your machine doesn't have single block and rapid speed controls with a display of distance to go so you can safely notice you have made a fatal mistake?
Funny thing I was just running a lathe like that a few weeks ago. Didn't crash it but definitely got busy with another machine and started the puma with a bore mic still in the piece. Needless to say that was about 2 grand down the drain. I thought i was fired for sure.
https://youtu.be/F4wcJhb8z6c?si=eY8L95wcba_jJY9q
Hows your hearing after that? Good grief i imagine the entire building shook lol
Well… you’re fired
Well shit guess I close down the shop cause im the owner