hello welcome to Enots engineering i'm Alan in today's video we'll be looking at some of
the tools i made when i was an apprentice and on the lathe i'll be changing over my x and y
readings on the digital readout so let's go into the workshop and see how we do it
a few weeks ago i showed you some of the things we made when there's apprentice
and i've just been looking through some of the other stuff i made i thought show you some of the
things that are still here 50 years after i made them. this is a cast iron block and we use the
shaper to remove some material from the bottom to form four feet
it's a six inch square block of cast iron the top originally was just machined
on the shaper and then it was ground flat and i still use that on and off these days
to go with that we made a scribing stand block so you can adjust
just the height hold the scriber in here to mark things out nowadays i tend to use it
to hold the dial indicator and that fits nicely on the cross slide of the lathe
so you could use a dial indicator on an object in the lathe
we also made a set of g-clamps
a pair of pliers
these are made from scratch just square pieces of steel and you cut them out machine them
simple spanner
and i found this in an old tool box.
which is a screwdriver or will be i can finish this one off
you see the blade it's just been roughed out
i have three other blades here that have been roughed out
the idea is you just undo the end of the screwdriver and you can remove the blade
this has a square hole in it
s machine body bore
that goes inside the blade goes in and you just tighten up the end
we also had some v blocks which i've used but they're starting to go rusty again
this size of v block
this was mainly done on the milling machine
i think most people that had an apprenticeship in the 70s 80s probably made the same tools
over at the lathe and this scribing block i fitted the dial indicator into it
and it fits nicely on the cross slide on the boxwood lathe
so you could check run out of a bore
that's the scribing block used on the lathe to check bore run out
if you're wondering what this is here this is just a tin with oil in
and there's a brush on the end of the cap to you use on the lathe when you're cutting
and it's held on the end of this
this is my scale for the y-axis it's held on the end
with a magnet on here just holds it in there
take this off
take the
cover off
so what we have is the scale here for my y-axis which is across the lathe
and at the back on the bed of the lathe of a scale for my x-axis
i had a comment a few days ago from somebody who watched the video i did a few years ago
about fitting the x and y-axis on the lathe
and that's me why i've got mine opposite to normal
so on this video i'm just going to show how to put it back to correct or how to change it to conventional
it's not important you can you can use whichever one you want
the only time it becomes important is if you have a cnc machine and you're using or using your lathe on a cnc program
with stepper motors and what that will do is put the axes out so when it thinks it's moving
the x-axis it's actually moving the y-axis so if you want it for cnc operation you need to get the
x and y right if it's just for manual use you can set it as as you like
what i want to do is change this over now
to set it to the same as a milling machine so it makes it a bit easier
when you use one machine then go to the other machine
the x and y readings are the same
this is a cross slide which should be y axis
but as you see it's coming up on the X
and this is the backwards and forwards along the bed which you can see its moving the Y axis
so all i've have to do is change the two sockets over at the back of the digital display
and there's another couple of things i need to do at the same time
because i have this in diameter mode
which gives me the diameter of the workpiece rather than a direct reading
so that first of all we'll change the sockets on the back
turn the read out round
and we're looking at the back all i need to do is undo the screws for the sockets
and swap them around so that the
the bottom one will go to the top
and the other one goes there
i'll turn it back around to the front
and i'll take the plastic cover off at the same time so you can see easier
to change the axis from diameter to direct reading
you switch it on holding the button down on the front here and it goes into setup mode
and asks to select a type using the up and down arrows
you can have direct
r d
dial change your resolutions sub data put into slope mode
axis type step mode angle mode error live mode display and clear all or quit
so what i want to do is put it into r and d which is radius diameter
and enter saying select the axis
now because i've changed them round i want the y axis which is the cross slide
so i want to select y
which is by one
that's not selected that's selected if you wanted x
put that there just put one on there
so i've selected that enter
and move back up again to select direct for the second axis
enter select axis now this time i want the x axis this as one
which it's already set up to press enter
so the x is direct which is if it moves a millimeter it gives you a millimeter readout
so i'll come out that now just go through until you get to the bottom which says quit
Enter
testing the d.r.o. readout the first thing i want to do
is move my compound slide to zero position to take out any backlash
then touch my tool post onto the end of the spindle
and zero my axis
x axis to zero and do one complete turn of the compound slide
the compound slide is pushing on the spindle moving the x-axis
back to zero on this lathe it's two and a half millimetres
it's about there and you can see it's saying to 2.5 millimeters so it's not doubling up
the reading so i know this is reading correctly now and set this to zero here
your Y turn the y axis which is the cross slide
in one revolution on the dial
if you move your tool in a 0.001" you're actually taking 0.002" off the diameter
and this is showing you what the diameter would be
i've set the dial indicator up in my tool post
and all i'm doing is using the dial indicator to represent the cutting tool
so what you do to set your scale you just bring your cutting tool in
until it touches the part
obviously with a cutting tool i would use a feeler gauge between the tool
and the part to get the feel
so you bring your cutting tool in i'll
set this at zero just for an example
and then on your digital readout and i've put in
a size of 10.5 that's the diameter of the bar
and then
move your tool over to what you're going to cut
you can put a cut on
keep keep taking cuts until you come down
on your digital readout so if i was cutting that bar 10.8 i wanted to finish it 10.5
i'm just looking at the readout and not the dial indicator i'll turn the tool in until it was there
and that's nearly 10.5 and looking at the dial indicator it is on size
you just need to remember not to change your tool position
or turn the tool in the tool holder or you lose your datum
oh well that's it for today hope that was useful
i hope it was interesting and we'll see you next time on enots engineering