Hello welcome to Enots engineering I'm Alan in this video I'll show you how to
use the lathe as a shaper to form some spanner flats on a bar and use the
woodwork tool as a form tool on the lathe. So let's go into the workshop this
is what I'm trying to make its point 187 diameter which is 3/16 I want different
lengths on this end is a dome there's a couple of flats and the thread is 40
teeth per inch which is 3/16 by 40 teeth per inch and I think that's a model
engineering thread I have this stainless steel rod and out of that I've made
three using the die to cut the thread so now what I want to do is to turn a dome
on the end now checking the dome on this one this one is 10 mm and I've checked
some of the other parts that came with the bore gauge and depending on the size
the radius on the end is different so the bigger the bore
the bigger the radius so on these that I've made I want to cut a radius of ten
mil and on this part which is another one I've made but this is a quarter inch
bar off because I needed a face on this I need to cut a six mil radius I thought
am I going to grind ten and six mil radius on it lathe but then I'll notice
something that I've got in stock these are router cutters for woodwork
that has got a 10-mile radius already ground into it that one's got a six mile
radius and it's tungsten carbide tungsten carbide shoot cut stainless
steel and that's what I'm gonna do next to see how I can reproduce the radius on
the end. Fitted the part I want to produce the radius on into an ER 20
collet this is a tool I want to use just to put that radius on the end it's
not that far off the shape of the the tip already so the next job is to set
this at centre height in the tool holder with the radius at about that angle
I,ve fitted the router tool into the tool holder use the piece of aluminium so I
don't damage the diameter on the router cutter now I'm just setting the tool
height to center this is a blade I'm using on this side and that set up to
tool height I can turn that round put some black felt-tip pen on the ends so I can
see where it's cutting
I don't know if you can see that the finish is really good. Change the tool now to the
ten mill cutter you can see there that's a 10 mil radius gauge I will set that
at centre height and then set up the next part
I,ve set my lathe tool a narrow tool I've set it sidewards in the tool
holder so when I place it into the tool holder I can move it backwards and
forwards and use the tool to cut like a shaper to get the depth of cut I'm using
the height adjuster on the tool holder so by turning these lowering the tool
it'll put the cut on highering the tool it will take the cut off and I've
got a scratch mark on there that I use just so you can see where you turn you
too so what I do with the one side say 2 6 o'clock there
I will then turn it round back the tool off then come back down to the same
position so that each side is equal and you control the depth the length in you
can just turn the handle or you can set a dial indicator on your carriage
depends very important the depth is or the length to move up to the same stop
use the tool height adjustment to lower it down to the metal
I've got these I've got the spindle lock on so I know where that flat is
being produced and just go along using the lathe tool like a shaper backwards
and forwards produce the flat
return the tool of the higher position
then rotate the job to 90 degrees
what I'm doing is using the micrometer
just held on there so give me the position when that's vertical I know that the
flat I've already cut on the bottom is horizontal go back over to the top and
lower the tool down there
let's check the depths is correct lower the tool down a bit further to get the next
cut
check the size
so that's about 0.010" off I'll just lower this - that's the same position as I did
the other side
Thats ok if I got a flat there flat on the other side. there you see the finished items the
three on this side of the originals that came in the bore gauge these three are
the ones we've just made. That's it for today and I hope to see you next time
on Enots engineering