Hello friends, how are you about Professor REYNER, today we are going to do a video class
where we are going to give preventive maintenance, therefore we are going to go we are going to address
what preventive maintenance of machines in this case we are speaking around
which a failure has given us a very common very frequent failure the moment we are making
a thread we activate the threading lever and the split nut presents a failure
the failure is that it is deactivated when it receives the thread load That can happen at a good time
in some machines because they are old, it turns out that they have discards at
least this lathe that we are going to review has about 30 years or so of use
and this is due to the fact that the same parts are wear or they are loose then what
we are going to do is either it could be a new nut to change the series of adjustment well
we are going to see what results from it We are going to give you maintenance
then a split nut of the carriage that is the threading lever of a harrison m3
cent. We hope it will be of help to all those who are working in the
maintenance part of the machining part in the industrial area. He sent some greetings to all our
subscribers who are from Mexico City, he is from Spain, we also have people from South America, Peru,
Colombia, Bolivia and Uruguay, all those people who greet us and who are our followers
because we also send a greeting reciprocally for the start of work
I am not going to record the whole procedure because I think it is quite simple or at least I already know that
we have some videos on YouTube where we download this so we must release the two screws
on both sides so that it is removed or at least true for a beginner every time we have
approving the screw vague to be able to see that it will come separating the box from here it will
come has Down below what we want is to find the fault here, why is it that
when we anchor the split nut for threading in the step or when the blade begins to cut due to the cutting
effort it deactivates itself, so technically what we say
is that he is fanning the step, he cannot hold it in the cut and it is deactivated then what we are going
to do is lower the box and we take the whole series out of all that part I am not going to record it because
not to make the video but in fact What we intend is to get to where
the split girl is and what you look at here every time I activated and deactivated there I think
it looks when I activate there you see a split nut when I activated and deactivated when activated
and deactivated then This is that part, it is giving us some kind of problem, maybe
the pin, maybe it is worn, we are going to remove it and we are going to analyze that situation,
good to remove everything, then we release the four or bolts this will remain so that it
does not remain in the air we are going to remove the ends that are in this machine which in
this case is the ignition spindle of the ignition lever that there are lathes that have
the small ones have one here but There are also some large lathes that have on both sides
so the detail that we are going to release this impact we are going to release the rock spindle
decides to enter and we are going to release the threading lucido, also be careful when
releasing this to remove it to remove all the box because we can not leave it supported
because we can also damage those shafts, or they can flex due to the load because this now weighs
on this small lathe like this model that is 300 of a 1 point bed of a 1.5 meter
a person can do it but when we talk about a lathe larger than four out of five
of a much larger bed, these parts will therefore be a little larger and the operator or
maintenance will need to esitar the help of one or two people who collaborate because it
weighs more in this case is lighter even someone can do half can put
here some some light that hold support generally recommend either wood or something
rubber because metal and metal with metal let's try not to be colliding metals against
metals but if something that has a cushion is something that cushioned the blow when it goes down,
true well then this we will record later right now we will leave this box
well So here we have the box, we have already cleaned it, we have cleaned it and how we can see
the transmission that we are going to analyze is that of the split nut which is the one we use to
thread and in which right now it is giving us the problem that When we activate it and
we cut it, it deactivates itself, we have the maintenance catalog, this is the prisoner
that sometimes it gets out of adjustment and we can adjust it per or we would have to review make
another review but the other evelyn sprockets do not have to do with this, what we are going to
analyze is this then at the time of making a movement to move away please
the nut what is doing this this is good for you to see beginners so that they see and
understand how the transmission occurs the moment of making the thread, so if
we come to analyze here we are going to remove the nut to see it because at
first glance we have observed that with this environment they are like the year 82 80 from
80 to 82 then it is more than 30 years old and therefore we are going to remove it to see the
state of the split nut in fact here we already have something back here, in case
the failure is that we are going to change it then you have to remove the split nut
as we can see if there is a mismatch in this clamp, the split nut is therefore
the one that makes the journey but the screw that it has here and that is seen in the catalog or
maintenance machine what it does is lower or raise them because as a game but it
has this guide but over the years as we can see this nut is already quite worn
until I see that it already has another shirt and in the background you can see that it already has against shirt And another
other guide, what we are going to do is change it, we had already analyzed it in advance, we are going to
change this nut is close, it will be left aside and since it is generally close they are made
of favor bronze, we already have this one that is made of cast iron and for your Effect here we have this one that I
had saved is stored in the warehouse this is much better and we are going to install this to
see if it no longer gives us the fault that the automatic environment shows the change
and it takes only leaving it as the correct means we are going to do the try
anahí now and now they grab it
for good
to no one
does not get stuck at the time of activating it is a fact as we can see not in editing it
please can not close remember that this has to close here and if we come
here in what we do the opening here the lever is not activated at all
here the lever is not activated and we take a shot from here there it is open when we close there is
an opening and considerable to that fact we have to do that we have to give it an adjustment
means that we are going to loosen this prisoner that is here so that this clamp goes up a little
and thus it can lower more what we are going to do here is an adjustment so that the nut can close because
it is not closing there Well here in the nut, as we can see, I do not know if we can appreciate here
that we have disassembled what we are going to do is raise and lower this die to make that adjustment
by already having the nut installed, now it is necessary to adjust it so that at the time
of move it away please close and open and so that the moment of anchoring it manages to close
the nut well the nut when it closes well then it will be anchored that are in the
marks on the front when we activate and we deactivate not here it is activated and here it
is deactivated so when the brand does not reach here it is not well activated
as you can see there it is not to the other end and that is why it is not closing
well when it is not closing well we need adjust them now to explain it
here we have the old split nut where we can see the prisoner that is in the
upper part I think it says look at a small prisoner it is quite small and in the lower part we have
another then to be able to upload this guide that is where it is anchor each internally that we do not see him
but there is where he accommodates we have what we need is to make him lower
more to make the one that goes also what we are going to do is move he is here then as he
the piece we need him to lift more to accommodate them we need to loosen here loosen
the bottom prisoner and touch the top one by touching the top one the thread what is going to be
pulling the They are going to do that millimeter but those millimeters that move here allow you to
set the adjustment to allow it to close properly and move it away now, we already
explained to do so now, that is, you have to loosen it, it is uncomfortable maybe we can not record everything
but yes there you have to loosen the prisoner that is below and then touch the one that is above
trying to do it in another way you cannot make it look good good it does not look good
in the recording but if there is a movement there in the nut and you can hardly appreciate because they are
very short advances but that short advance is what is needed so that this begins to close
now it is already more slightly closed but I still think it needs it, it still needs it
so that it arrives then we have to give it other turns here down and other turns up
so that it advances is that it mentions that it moves and allows us to close the nut more when the
closing nut more embraces the threading then the lever here now in a position where it activates
well now that we have adjusted it is arriving we are seeing that it is there to give the adjustments
I can see the closure there it is like this we are going to leave it because the
adjustment then we are going to mount and we are going to put a green step that does not fail
but be careful then we are going to know the k
i
at the moment to accommodate the one to be careful with the pinion that meshes with the
transverse spindle because sometimes it is the one that costs the rack you have to align the four bolts that
hold it there it is simple this is simple because this small environment and in the case of
this head is small all this box is small large environment that the
feet are bigger it is more difficult to align it and more help is needed
and we can see that it is closing it is not necessary to remove the English well others are
only put on arrival as we did approximate
and there you only need to put the supports in the case that sometimes it becomes difficult to
attach it here we just have to align it because it must be well aligned or and we lean on the
automatic or we anchor the lever with the same crank we help it to approximate it for here but of
course it has to be aligned because in some it has a key and has pins and that has to
be aligned if it is not aligned and we give it with the lever anchored the split nut what
we can do is find here some elements but if we have it well relieved
then we activate that and we turn it over and we bring it here this is for the installation
here we have already made the assembly we are going to make a test at this time the test
devised suitable or ideal was already with a material working a blade and putting thread load
to see if the red lever does not trip but we are going to do it like this in a vacuum and
in many occasions because this test is also valid So how can we see here,
here we have, we already have it working, I'm not going to choose a single step, any
step as long as it is turning light and overthrow why And we understand
that until it is out of water, the rotation means that it can work well, so
we come and anchor the screw lever, we activate it here, how to keep it, it is
already in a good position, as we can see there and we can already see
what it is turning here. then I go, I force it with my hand, I don't stop it,
hello I stop, it means that it is working well, this is a manual test, that is,
I put the effort here and if it does not go off and it is okay, the ideal was true. He brought
a material but right now I am doing it, as we can see, I cannot stop it
and the lever is not deactivated anyway you are there on your lathe here you deactivated it and it
stops active the transition of the movement of the nut is given again game and deactivated it
well in any case the work that we did the adjustment, the change and the adjustment that
apparently well in everything was good in these nuts broken by wear sometimes they end up
lost. endo the transmission in any way in the ideal test here around you in your country you know
how you are going to try to solve this problem the idea the purpose of this of this idea of ​​this
of this video class was the truth a guideline on how to repair it to a lathe when
that type of case occurs that type of problem in your workshop thank you very much thank you
very much to all those who are watching the video class on our
youtube channel we hope you will subscribe if it is the first time you are here
subscribe, leave us your line, a comment about which country you write to us and thank you very much
to everyone, Professor Rainer says goodbye as always, wishing maybe everyone from the center
and no no