I'm sorry, I thought the pic was humorously apropos here.
As far as what happened to the newsgroup; If you want to know every
political view & perspective on an issue - we've got just the trolls
If you want to know every view & perspective on Global Warming -
we've got those trolls for you as well.
Bypassing door interlocks, now that's a touchy subject since it's
obviously an OSHA safety issue as Charlie implied. This is probably
one of those cases that if you have to ask, you probably shouldn't be
Sometimes you can put a magnet on certain types of sensors and it will
fool it into thinking it's closed. But you didn't hear it from me - I
disavow any knowledge of having said anything on the subject.
Watch those long sleeves now, or we might have a new series of photos
to show (where you've become *ONE* with your machine). LOL
What ever happened to this Group, Used to get REAL Answers and Real
Help. Now ALL BS
1. since the yanks joined in........
2. if you cant run a lathe safely without guards then you should not be
running one at all.
3. I bet all those horror picture poster knowit alls have used a guardless
machine be it lathe mill drill grinder....in many cases try doing it
otherwise especially pillar drills.
I Guess there are No Real Machinists here. I have been Machining for
over 30 years. I agree that you should never override a saftey on a
Production Run. I am doing a LOT of 1 Offs ( My biggest order in the
Past Year was 3 Parts) and being able to polish a few tenths out of a
Bore would be Helpfull. As of righ now I am taking the pieces over to
a Manual Lathe and Polishing what is Needed ( Hmmm No Interlocks on
Maual Equiptment... I wonder Why? Also OSHA ALLOWS for Set Up personal
to have access to the 1 Event Software override
15 years ago I used to come to this Group Very Often and it WAS Great
to Have Fellow Journeymen and Such to be able to "Chat" with and trade
Ten P> > > > Black Drag> > >>> Maybe all this guy wanted to do was a little finish polishing, eh. LOL
In defense of the group, let me just say that in your first post you
made no mention of your experience or the reason you wanted to bypass
the door interlocks.
You "could" have had only 3 hours of machining experience, and giving
out any door interlock override information would NOT have been the
smart/safe thing to do.
I'm sure you can see that giving out information that could compromise
the safety of an inexperienced operator is not something responsible
people would tend to do.
Now that you've made your situation an experience more clear, I'd help
you if I could but I just don't know the override code for your
machine. The magnet idea didn't work?
No you didn't. alt.machines.cnc was created on Oct 1995, Friday the 13th
to be specific, not Feb 1994.
It still is.
Have you pondered the situation where perhaps no one who has read your
question has a definitive answer for it?
Having little CNC lathe experience, I certainly don't. Yet here I am
chatting and trading info. Imagine that.
Yeah, You are right. I know several different codes and would NOT give
them to anyone I didnt Know...
The Lock on this Machine is a Mechanical Lock, you CAN NOT OPEN the
Door unless everything is Off and ten ONLY in MPG Mode.
Its just a Pain to have to go to a Manual Lathe to Polish a couple of
Unless the machine is very, VERY poorly designed, there aren't any
codes to disable a door interlock, or any other safety feature that
fundamental. At the very least, you'd need to change the ladder logic;
and on some machines even that won't work, since the safety systems are
all hard-wired (negative true logic, fail safe) into a black box that
does all the safety stuff and just tells the PLC and the CNC when
they're allowed to move. Nothing about it can be programmed in the
field, and any attempt to bypass it pretty much puts the whole machine
On a more practical note, as someone else mentioned: If you don't
know how to bypass the interlock, then you probably shouldn't. Safety
devices like this are typically very simple. That's what makes them so
reliable. If you can't look at one, understand what it does, and see
how to deal with it, then it's likely that there are other things you
won't understand either. And some of those can hurt you.
I'm not trying to talk down to you, or to discount your experience.
But if your experience doesn't include this, then it doesn't, and
that's something any responsible person needs to consider before
answering your question. I can infer, for example, that you've never
worked with a factory technician while he/she was installing or
servicing this machine, and DID disable the interlocks. That probably
means that you didn't see or learn all the rest of went along with
handling the machine safely under those special conditions. A little
bit of knowledge - especially the wrong little bit - really can be
It's often true that there are no safety interlocks on manual
equipment. There are also no parts of a manual machine that just start
moving all by themselves. And usually nothing that moves nearly as fast
as a modern CNC machine. When you use a manual machine, you normally
have the controls (clutch levers and start buttons) between you and the
machine. On most CNC's, because of the way they're guarded, it's common
to lean into the machine, leaving the controls behind you, over your
shoulder, where you can't get to them if something bad starts to happen.
Safety IS more important than the inconvenience of taking your parts
to the manual machines. So is setting a good example. If you have
decades of experience, then its likely that there are younger people
around you who, like you 15 years ago, want to hear and see what more
senior people have to show and tell. Even if you don't hurt yourself,
you could easily help someone else get hurt without even knowing it.
And, if you really respect skill and experience, then the advice
you've heard from this group, and the choices made by the people who
designed and built your machine, ought to count pretty heavily.
Think. Be safe. And don't EVER let your guard down. That way,
you'll be able to make more parts, and polish them on your manual lathe,
BottleBob wrote in
Having seen a man put his chest in the 3/8" space between the end of a
rewind roller and a 2" thick solid steel machine frame (he bypassed the
Having seen a man get 6 of 10 fingers mashed to greasy spots in a trim die
(safeties were bypassed),
Having helped get a guy out of a chip conveyor with his arm in nearly 2
pieces, (he had put a door key in the switch to do some set-up work,
dropped a part in the conveyor and instinctively reached after it)
Having a guy come to me with his thumb in his glove, and his hand not
(female center and he clamped the tailstock up with his hand between the
part and the female center)...on a manual lathe without safeties.....
I'm not about to give out information about how to bypass a safety switch
on a machine tool.....
Flame all you want....I've seen enough carnage in my lifetime.