hello welcome to enots engineering i'm Alan in today's video i finish off making the screwdriver
i started when i was an apprentice all i need to do is machine the
screwdrivers flats on these two on this one i'm making the phillips head screwdriver
so we'll use the milling machine and the lathe to form the head of the screwdriver
so let's go into the workshop and see how we do it i was looking at this the other day
and this is a screwdriver partially completed screwdriver i made when i was an apprentice
the body is aluminium with a steel end cap with square hole in it
this part that holds the blades is steel
with the thread in the end that goes inside and the blades
steel with a screw thread on a square and it looks like partly finished or part done
screwdriver flat the idea is that goes into the square
the handle screws in behind
and then pulls the blade in
stops it turning so what i want to do is first of all give all this a good cleanup
and then
machine the screwdriver flat here see that's far too thick
this one is another one just once finishing off it's nearly there just once tidying up cleaning up
and this is a blank one and what i thought i'd do is have a go at making the phillips
type screwdriver head so first of all go to the lathe and clean these up
start with the screwdriver handle
i'm taking a strip of wood so i can support the emery cloth this
strip holds the ember cloth in position and allows me to put more pressure on the emery
looks a bit better turning is not very good on this the finish is not too bad
but it looks if i've dug the tool in there at some time when i was making it
let's try this piece
all i want to do on here is the outside part
let's set a few batches by the look of it
see if i get some of those marks out
some of them are a bit too deep
but it looks a bit better than it did finally i did this this screwdriver blade
i've just finished the other two off then we'll go to the milling machine
the reason why i use backing stick i'm using emery cloth is i can get more pressure onto the
workpiece i can use the emery cloth right up to the end the other advantage is it gives you a flat
back because when you're using your fingers you have the curve of your
fingers this gives you a flat surface so you can use the whole width of the emery
that'll do for now we'll go over to the milling machine and then mill the screwdriver flats
held the screwdriver blade in a collet which is in a
square block in the vice and i've used the existing
surface to set the
screwdriver parallel it's about five thou out that way and then across that way
only a few though so that will be ready for machining and what i'll do is use an end mill
just to machine that flat properly and then turn it over and do the other side
i think i'll leave it at that what i'll do now is just square the end off
the end this fits in there
and just tighten the end down and it pulls the blade in
that's the first one done
okay now i want to make the philips type screwdriver head and to do that i need to cut
four slots on the end of the screwdriver
one that forms an l-shape there
one that forms one that side so i'm left with four strips one millimeter wide
all the way around and then it needs to go in the lathe and put the taper
on the front for those that are interested this is how i calculated the
milling operations the diameter of the bar is 6.25 and what we want is to take out this area
on the four sides so it leaves us a one millimeter piece that will fit into a screw slot
so that meant once you know the outside just touch the tool on the outside move it in 2.625
move it down 2.625 and that's the section you mill out and then because it's on a block you
can turn it right in the vice and use exactly the same settings for the four
sections so the first thing to do is go down to the depth of the strip which is i've touched
on the top of the bar the bar is a 6.25 mil diameter and i need to go 2.625 deep and 2.625 in
this cut is 1.5 earthways
take that make it 1.8 both ways
i've turned the block around 90 degrees i'll do the same again on the next side
you can see now i've formed the first
loop so now turn the block around again
back in i'm using the nut to locate up against the face of the jaw to give you the depth
you can see the
pattern forming now of each
now you can see the formation of the star for the phillips these should be a millimeter
wide now that's been machined all the way around it gives me the four
locations so now all i need to do is put in the lathe and form the point on it
i'll set the compound slide to about 28 degrees i'm just going to put
a chamfer on the end of that using the compound slide
that fits on the end and holds okay
well that's the three screwdriver blades completed
and that finishes the job that started when i was an apprentice
oh well that's it for today hope that was useful hope you enjoyed it
and we'll see you next time on enots engineering