Yes, hello everyone. I am Teacher REYNER. Thank you for joining us.
to make the piece we will have to tell the facts and how it turns out and how
we can see in a gag chop of independent therefore
we need to enter those to center it we will use this
magnetic mass with this dial gauge the magnetic base has a suite for
be able to turn on the magnet or power turn it off there this on
we can observe with the cloak truth what we can hold anywhere
be metallic so that this rhythm and what more careful we have to be with the
dial gauge dial the cooperative clock
in the comparator very helpful the dial gauge is accurate
here on the cover it says that his minimum division equals 0.01 or
equals one hundredth of a millimeter each division is one hundredth of
millimeter as we can see the cover is
graduated from 0 to 100, that is, 100 hundredths if in hundredths they equal
a millimeter when the needle turns science before
on top will be a tour of a millimeter
we can also see that at the same time of each number of a small number or
whether the needle can rotate clockwise schedule and it's also just like
counterclockwise the scale the graduation equals the same for both
senses for both for sense positive as for negative sense
let's see that there is a needle smaller
in the case of the small strike for every division that runs by millimeters or
be if we put this cover is at zero when it has advanced
100 hundredths the large needle beech advanced seven hundredths which equals
a millimeter the host you take to a division let's see today there is better very
fast i'm going to do it as slow as can
and we can see that here the needle although not also not well appreciated
but with a delivery of 0 the small needle advancing and it will arrive it will advance a
millimeter too since for each turn the large water is
a millimeter and in the case of the needle small for each turn is a 10
millimeters because it brings 10 divisions there already
now so the first thing that we are going to
do good
it's called the clock with words what first thing we are going to do is start
this part entry in the case of this fact
grooves around circle shape that will help us in the first instance
to give an approximation to the piece to when I in this center is that if you are
and left her on the first lap too I will leave this one in the first one
turn this one I'm going to do the first lap and so on this
just give me a help of an approximation now look at how it turned out then I'm going to
leave more or less 75%
again this is going to be done out there we still have room to go
roughly to calculation as a good Christian would say to the eye
then there leaning on the mature ones circulars that brings
I have left it at approximately center but why do I say approximate
because in reality the piece is not centered remember that it is central and
consists in match the symmetric axis of the
machine with that of the part then right now we are going to do a test
some quantity
and we can see that the piece is not well centered yet
we make these circular grooves we would have the need to use a
A point a watch a spiky simple grammy
like right now and my possibilities center the piece as you exhaust them now
we will continue to find the piece with the dial gauge then
we are going to activate the magnet
for us to locate the clock well compared
it is located in this way
what are we going to do
and if there are operatives who went to bed what I always recommend using the
comparator probing on a surface first it has to be the most
realistic possible so it doesn't provoke me vibration when measuring
and also and also true that I managed with the route that is has another aspect
What to take care of is that I must see the benchmark here you
we have a vertical axis in these two a clamp and horizontal unit in these two
gags then in reality there are operators who put the clock on us
comparator here and they're working correctly
that will depend on the taste of the operator so I to teach but we are
working here vertical
the dial gauge we met the graduation cover
we already talk I also have a brand my tutor me but that's different
marks the arms the base support magnetic this screw that has here
This screw that you have here allows me move it slightly and thus achieve a
better precision that is if I really I want to move the needle
a little bit but that little bit has to be a very high precision then the
screw allows me to achieve that precision is already a given case that
need now what are we going to make be moving turning shock
turn the piece and be watching analyzing where the fault has contact
relating always two by two deadly gag number four
we will always relate it to your opposite that will always be 2 the
gag number 1 the opposite of the gag number one is always going to be the
number 3 then in that way we we will achieve enter the piece
relating in opposites 1 and 3 and the dead states with gag 4 when
we already have that and it is experience you don't need to remember those
numbers ok here it has to do the movement of the needle towards the
positive side and towards that side is negative
upwards are positive and downwards are negative so when this progresses
upwards the sense is in favor of the twins and
when I advance down it's going to be in against dawn the clock is going to be
negative this so that we have to see where we are going to loosen and where
let's drop the dead then let's see which is the highest part and
what is the lowest part the most part high is the one where the needle has
advanced as much space to the side right how to observe well
on day
is the lowest part the lowest part will always be opposite to the most part
high the highest part will always be opposite of the lowest and so
successively well
we will try to distribute the examples here we have
there we have the 35 and here it would be 40 then still
we have a little
still here go 30 and still at 40 we reached 40
and on this side we will see the number small
thank you 40
so for us to start see how to focus this let's remember that
we are going to loosen in a gag and tapping on another already loosening
one gag touching the other which is the what we are going to loosen and what is the gag
that we are going to focus on we are going to touch the one is higher and we are going to loosen the one
it is a space issue so for example here
this is the highest gag then let's see when you touch the needle you have to
back
and the to be able to focus because then this one
I have to loosen so that the needle back up to
Over there minimum the opposite that would be the
hamburger 4 come to where we're taking you now
we do a test turning the chat and already we have to
the eccentricity displacement is already less then we continue to play
always the lowest
when the clock now turns out that that are from this work the gag 1 and
gag 3 the gag between which it's higher here look
now he went to the other extreme abundance 4 we already have it then
clamp 2 must be loosened
now let's see when it turns in favor of clockwise is he has raised it
the piece where we have to focus that's the part that is here
look now there is a little jump that the needle makes
it's because of the damage alone the oxide that has
we see we have almost four hundredths from the center we are going to touch the gag
that this map this is the highest one thousand
what other leap of the best he
look we already have
one hundredth
the jump that the needle makes is here material already viewed that way is going to
always center this center one piece using the comparator in this case the
machining on the lathe because if now let's relieve a bomb if we talk
of aligning a press on the machine milling machine this would be the situation with
the reference parameters are different but the dial indicator if
has the same characteristic of the record engraved recorded then
we will use it with the same measurements but look there we already have
about a hundredth
there
we can no longer as we can see the needle jump in
the hundredth with two passes the roughness part there we can
to work