hello everyone I'm professor rainer today we are here on youtube to
make a new video and today we are going to talk about the topic of taper turning
industrial machining itself in lathes get the job done pretty
phonic turning to start we have to understand that the cone that
works around is merely a cone symmetric has a symmetric generatrix
in the classroom we have to learn identify the elements of a tone
so that later we can do the calculations today we have prepared this piece
to make a tonic tornado previously where we're just going to explain one of
the methods in taper turning there are three methods is the method of with
the upper car the second method would be displacing the tailstock and the
last method is with an arm or ruler guide then videos let's do it
displacing the upper carriage
having already made the measurements having the important data we are going to
substitute in the tangent equation of average angle will be equal to the diameter
greater 34.7 mm less the diameter less than 20 millimeters this
we are going to divide twice the length that in this case we have here
40 and 49 points
and here we have already resolved most of the equation of the exercise we have 34
points 7 minus 20 gives us 14.72 for the length which is 49.2 where 98.4 the
division of this result gives us 0.14 93 here with decimals we will be
using four decimals because if you teachers recommend to have a
good precision better accuracy in the calculation or that already having this number
what we are going to do is clear tangent tangent when passing the other side
what happens is here we have people at the other side happens to be the inverse the
inverse of the tangent of this number that we have here therefore there
we have some half is going to be equal to inverse of the ats of the tangent of
point 14 then we have to do that situation here we have a this
calculator and the way in which it is carried out in the
calculator because it depends on the brand depending on the model in this
calculator works this way come on to put chip or second function
inverse of the tangent and let's type now the number that this one we are
looking for is that value 1493 0.14 93 and we put equal here gives us a quantity
degrees or this value this angle is the same here half angle goes
to be equal to 8.49 15 degrees this calculator makes it easy for me to
pass on this key that we can observe here to degree minutes and seconds
to have better precision then the number we have here we leave it there
on the screen and we detect you here now he tells us with a little older
precision that the mean angle is going to be equal to eight degrees with 29 minutes and
so in this way we can say that here we finish the calculation
to do this this taper turning calculation gives us eight degrees
with 29 minutes then now we come to tell us to define which way
we will turn if we come and we tilt the car on this side towards
the left side clockwise the larger diameter will be on the right side and
the smaller diameter will be next left
in the characteristic of the piece that we have here and the largest diameter is
to the left side therefore we must tilt the cart to the right side
that is we are going to look for the 8 degrees towards this side to the right side so that of
that way we have the largest diameter to the left side of the environment and the
smaller diameter next to this right i
ok as the largest diameter what we need the left side and the
smaller diameter we need it next right then the offset the
turn we will do it to the side counterclockwise, that is to the side
left here each division of the scale equals a degree like us
we have to move 8 degrees so that way we have to go
counting the divisions ok then we come here here the division we go
moving forward we're still going to get to the line number 5 then 6 7
here we have 8 lines the calculation to it tells us that it is 8 degrees with
29 minutes but it turns out that the scale precision
it doesn't allow me it doesn't allow me to measure minutes only degrees what I can
do is that in this feature of this lathe we will say like this to the calculation
we are going to give you the line that line is between 8 and 9 degrees
because the this scale this graduation no allows me to measure degrees and minutes in
this feature of this lathe but we can't do like this after
that we have to hold the nuts correctly and then start the
machining
after you have properly aligned the machine was just just continues to do
the tangency to make contact and start machining the
turning in this case to perform machining
of turning like this supporting a upper tear
and the depth we are going to do a cross jar but the last the
displacement we will do it leaning on carlos superior
and this in this type in this method has its advantages and its disadvantages a
advantage is that we can make angle or turning at fairly high angles of 0
up to 180 degrees but the downside is that the lengths
are short by the lengths are going to be depending or are going to depend on
tour that has a top car another disadvantage is that we can't like
your environment we will be working conventional environments are semi lathe
automatic in the case of the car superior does not have
does not have automatic therefore the advance has to be manual and this that
implies that the turner has to be a lathe that has good precision in the
advance to achieve good finishes choose good speeds and choose a
good progress in the hand this is in the mesh
being able to appreciate now we must keep in mind that it will already be
to finish this diameter here must also match there remember
that the the conical tournament what are we national re of the smaller diameter the
larger diameter and length separating to those two diameters forming what
we know as color therefore when let's get to finish in one of them
must also match completion of turning on the other diameter the
turning position also already what had mentioned is important remember
than the smallest diameter in this method since How are we working right now?
smaller diameter is on the right side of the operator if we are facing and the
larger diameter as it is next left
so we rotate counterclockwise the car its lower
let's see there must end coinciding the heights of the
diameters we already need little if they don't match me it would mean
that the calculation is wrong or dimensions were wrong from measurements like
we can see there we are correct the diameter is about to end here
I have already made tangency in the smaller diameter and to return to a perspective
different there I already have the diameter that
we had turned here that was the smaller diameter therefore there already I
must end in diameter at zero the blade in diameter over there in the
larger diameter and in that way what we can observe
and appreciate is that the calculations they were good and that the
dimensions were fine
important machine alignment too
and today we finish this video on youtube
that the apprentices keep learning like this is by improving your knowledge of what
is machined on industrial machines as in this case is the lathe