Engine Lathe Basics

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okay getting ready to run the lathe and

the first thing you want to do is try to

get all you

if everything you need

you get ready to start that saves time

you can go back to the tool room and

various things like that we're going to

start off with this print

it's a six inch long print you can use

one-inch diameter

there's just three steps largest

diameter is nine hundred thousandths

this middle one is 800 and the smallest

of seven under so I already have my stop

material here is two inches longer and

then what I need

we have a little room to put it to chuck

so let's go ahead and mount our bike so

I know I'm gonna leave about the fun

things hanging out that basis off I'm

gonna put summer grilling

all right champ

we've been using high speed steel we had

to grind this tool well here's another

type of tool this is a cemented carbide

has a carbide tip on it and it has a low

where it was cement glue to this piece

right here this is an inserted carbide

tool which you all will be using later

they come in different sizes and

different grades great assistant so

first thing I'm going to do is I'm going

to go ahead and mount this tool in here

so but it's a little bit closer so you

can see what I'm doing okay now that we

have our tool mounted in in place what

we need to do is talk a little bit about

speeds and feeds over here is our

gearbox for rpms and we're looking at

this side over here and if you look at

lowest one earlier it's a little hard to

read on this camera but it's showing 45

being the low range and 355 being our

high range if you notice these little

air symbols here it's representing this

top up here so here we're in low range

that would be neutral and all the way

over over behind this and this gear

right here it shows these symbols a

little wristlet so right now if we look

at it we are in the bottom showing

straight down and over so low range

would be 250 and the hiring should be

2,000 I'm going to be running about to

save 355 that'd be at the top high range

look at the Sun walk it looks like

all the way over this way and this way

thank you now now that we have our speed

we need to think about our feed rates so

I'm going to move this out the way so we

can see butter here's our feed rates

down here this size feeds and this side

over here is fourth reading which one

we'll get to in a little bit so the

first thing we want to do is I'm going

to be going anywhere from four to eight

thousands per revolution all right so

here's four thousands here so that would

be one hundred number four you should be

right here I have to roll the chop there

number four and we also need to be in

beings we are already in beat so now

that means that every time this chuck

goes around one revolution my carriage

is going to be moving for thousands each

each revolution alright let's go ahead

and put this in low range there and we

could turn up

we already switched them all to one so

if we hit the green button that's going

to start us up now this lever here you

push it forward

we've Chuck something coming towards you

right you're Chuck should always be

coming toward you but push down on it

will be reversed all right now here's

our tail stock that's used for drilling

or either mounting nice laughs Center

and therefore support I'm gonna go ahead

and turn this tool post around so we can

go ahead and start cutting with the tool

post turn now

turn the Machine off make sure you learn

new glasses

ah I can already tell that this tool is

right below Center but I go ahead and

make them more

I can see now way below Center down so

we need to adjust that let's see what

this looks like our machine off

this way so I'm going to bring this up

so I'll make contact

take my carrots we roll down a little


and lift up now we're automatic feeding

we need to speed that up a little bit uh

Pete right but anyway I did a good job

alright now let's go ahead put a Center

in I'm out that didn't just tell stock

notice it has a flat on it so whenever

you stick it in it will find a certain

place pop it and it locks in on slide

our compound you know tail stock up okay

this the way so get to it and you always

want to make sure that whenever you turn

the machine on your pool isn't gonna be

in the way

that's very very very important you turn

that and we know we're clear now just

leave it on the backside if I pull that

up that will lock my tail stop to the


this by the way is a number 30 centered

over whenever I drill into it it's going

to form a 60-degree angle the same angle

that is going to be on our live son I

will give a support whenever we're


okay now let's turn this tool post



and we'll pull it out one half just a

little bit hanging out up inside the


that good and tight

background co-sleep a car laughs Jacobs

joke that I can write a minute sermon

now I need to make sure I can get your

spinning of that shaft

that's good enough up until stop

right daddy

okay now this longest part we have here

26 inches I have a six inch rule so no I

can go that far but I'm gonna go just a

little bit beyond it because I'm at the

saw it all for you to take a part off

tool and part it off

bring this here


we're a little bit beyond six inches

which would be fine I'm going to turn

the machine I want to make a more

into that more okay now what we're going

to do this is the cross slide we're

going to touch off on this part and say

no zero

then this scratched the surface madness

out of the way turning off now there's a

lot there's a nut right here so if I do

that now I could set this on zero

there's a line right here if we want to

line that up all focus a little better

can we lock it

notice right here we showing one slash

diameter symbol point zero zero two that

means that each one of these lines is to

thousands of an inch I'm going to take

beep the thousands this first cut so the

first long line I come to it's going to

be ten there's twenty thirty forty

50 Thanks now we'll go and turn the

machine back off well first we're gonna

slow it down I'm not gonna turn 355 rpms

we're going to turn around about 180 so

180 if you notice is in our low range so

we're going to switch it to little range

all right now we need to see what the

symbol for 180 looks like that is both

love on going this direction

180 now this category over here

that's if you switch the gears in the

back of the machine then you'd be in

this category over here right now we're

the large gear on the bottom small get

it top over here small get on the bottom

large gear on the top just by its first

Troy infernal machine home

the board and made our sitting right

here and keep the thousands

bring it up a little closer you're

almost touching and right here if we

take this lever and push it to the left

now we're turning stopping point

getting ready to disengage the feed

what I do is I disengage teeth just

before I get to it then take my hand

we're not gonna barely pull them I know

I don't go beyond on

okay he is disengaged so habitus which I

machine off always disengage the feed

before you switch your machine on let it

come to a stop now we can roll the

carriage back and we can measure our


okay well hain't get on micrometer and

it's going to get a measure

nine hundred plus two lines and it's on

the tubes so that would be 52 952 that

means that we have to take off another

mm okay I'm not gonna take 50 mm I'm

gonna take maybe about 47 that way I'm

gonna be at the top my tolerance this

should be our final four diamond

every disengaged pea

each disengaged a hand wheel slowly

bringing up this egg this was not that

important because we've been sawed off


but place in the habit of boon correctly

all right Swiss some seen off and we

need to measure up our hundred and four

thousands so let's go ahead and

go back to the beginning and what we're

going to do now is we're going to take

it back okay let's turn the machine back

off go in make this some more

now can back this back up

let me touch off again go on so smooth

this out of the way and we're going to

take it to 150 which actually 50,000 per

cut 10 20


pick the thousands and engage our feet

but halfway to the link

up here and we'll slowly bring him up to


going beyond it that's it

sweet some cheat off my church back

and we're going to get a measurement 852

and we're already sitting on a 50 mark

150 we'll just take it 200 thousands

that beats having to rezero each time

you can continue counting from where

you're at you don't have your wrist a

chance of every time you turn turn this

on loosen this and turn it moving it in

or out one of the others let's turn the

Machine off bring our carriage up a

little closer to the workpiece

and engage our feed there should be a

final 800 thousands

in our house

I should say

that's come out good the breaking off

the little sixes 106 for man

okay disagree feet

each disengaged slowly bring the hand

they're stop the machine

they've come to a complete stop and this

way big rough are the part on the tail

stock in is 802 and at the end of the

eight hundred thousands time for is 803

so that's good we don't we don't have

much taper in it at all now we need to

turn these seven hundred thousandth

diameter back two inches and it's a

little hard to get your scale in now so

what I'm going to do is I'm going to

back this tail stock out of the way and

back this out of the way as well now I

could take my rule and I can measure it

and set it over two inches easier there

see it's on two inches now I'm going to

take my tail stock push it back into

place and be very careful not to push it

too far up inside the chunk by the way

this handle right here I didn't explain

it earlier that locks this hand wheel so

I take the hand wheel I'll put just a

little bit of pressure on it now if I

lock this that keeps my hand wheel from

backing out of the way let's turn the

machine on and make them our own

if I go back right they touch off

I'll show you something the reason why I

wanted that tool to be sticking out as

far as it was

so what interfere me the tailstock I

don't have much clearance to here at all

I had to go any smaller then I would

have to adjust this a 400 okay now we

wound up both 200 I'm gonna take 50,000

there's 10 20 30 40 50 thousands we're

close to it

and again speed

it's wiremock for the light brother

let's take a little more time

beeps engage disengaged hand wheel off


switch the Machine off

disengage first turn the Machine off and

then crank it back and get a measurement


we are at 7:52 might has really bothered

750 mm so I'm just gonna go ahead and

take the 50,000 and be done with it

10 20 30 40 50 thousands and this should

be our final thing movie through with

the park

we're engaged our fee



all right this very feet slowly burn



as next will she know

that should be a funnel car

let's measure and see what's going on

all three of our diameters are correct

the lengths are correct

so we're through the park let's go ahead

and back our tool post out of the way

well tailstock out of the way and take

our part out of the machine

alright see this that should never be

left in the chopped tickets take it out

of sinners to get through using it

alright that's our finished part

okay all of the diamonds are correct 700

this one

800 and the last one

nano to

he holds a micrometer like this you can

operate it with one hand

anyway switch it off and the next video

we don't threading