Hello welcome to Enots engineering I'm Alan
in today's video I take a look at the milling machine vice
take it apart see how much swarf and dirt has accumulated inside over the past year
and have a look at a few modifications that will make it easier
to grease the main screw and the end cap
so that's going to the workshop and see how we do it
today I'm looking at the milling machine vice
I've had this just over a year and I thought I'd take it to bits and
see what condition it's like inside whether it needs cleaning
lift up the vice
I'll take this over to the workbench so it can have a closer look at it
so to strip this down first of all I'll remove the rotating base
some swarf in there not too much take the bolts out
and I'll wipe that down
that's the pivot point and underneath we have a bolt here
this holds the main screw in and then we have two bolts on each side
take that off
you can see where it rubs on this strip
take out the 2 cap heads in this end
so this should be able to screw out
there's the main screw you can see it's got some oil on but not much
on this part here it's dry no grease or oil in there
and there's no way you can oil this there's no oil or grease nipple on there
and there's no way you can get at the main thread
so if I lift the top off now
There's the inside fairly clean
so this is the main thread that just comes out
as I've removed the washer off the bottom
that's the vice fully stripped down except for the jaws
which I'm not going to remove
so the first thing I was thinking is
how can I get some grease into this thread
now looking at these strips you can see where the vice has been rubbing along the strip
not so much on that one but what's worrying me is these are just chopped off pieces of metal
they're not even machined
so what I would do is rub a file across the there
draw file the top remove the burrs from the holes
and see if I can get a better finish on that
I'll just run this file across the top
the first thing you see there there's a burr on this side of the hole
which means that when this is bolted down flat
it would tilt the part and you can see that the parts have been painted black
you can see where the the vice has rubbed up and down on this side
so that should be a bit flatter now
that's the second one done
The next thing I want to look at is this
I need to get some grease into this part there's two ways I could do that probably
Mill a flat on there and then put the a grease nipple on the top
or drill a hole the spindle and put a grease nipple on the end
Lets have a look at the base
now that's the base the main nut goes in there
then this goes on the top and this goes in the end
so I have the room here to put a grease nipple on the top
and I think that's the easiest way of doing it
if I drill a hole up this shaft it needs to come right down to here
and then I'd have to put a cross hole in
so just by milling a flat on there and drilling through I could fit a grease nipple on there
It's this part really that's the bigger problem
now let's go up with some sort of sketch see what we can do
this is what I'm planning on making
then on the nut side all I need to do is drill a hole from the thread that holds the nut in possition
stright through into the screw
I've placed it in my 3 jaw chuck and
I've tapped it until I can get the best reading
so that's from 0 to 1 or 10 on there is a 0.001"
so it's running out about a 0.001"
first of all I want to put the 5 mm drill down just to give me a start
You can see the drill bending there trying to move
and what I'm trying to do is get the drill to be still
so that when I put a 3mm drilling in it will guide it straight into the hole
now I've got the the start of the drill right
Now that should drill straight into the thread
Speed it up
Thats gone through into the cross thread
any grease that goes down there will go in to the thread
so I can fit this back in the vice and reassemble the vice
until I get to the part where I need to bolt this down
so that's a bit we've just drilled right in the bottom there
this can go back into the vice put the top back on
now just put some grease along the edges
That can go on there
I'll turn that over and I can put the strip's back on bit of grease on the face
each side
Then I have two strips to go on on this side
and one on this side and the four bolts to go through
right so the next job is to make the bolt that goes in here
to hold the main nut in position
a washer goes on the top there and the bolt goes through there
Now this bolt I'm making will have a hole straight through and a grease nipple on the end
so that you can grease it from this side and the grease will go into the bore
okay this is the bar I want to use it's an inch bar
the problem I have is with this chuck the bar will only go down that far and this much is sticking out
now I know from experience that when I'm trying to turn this part down
there will be a lot of vibration because of the overhang of the bar
so I'm going to change my chuck for the 4 jaw chuck
put the board on
put a piece of steel through the jaws
just tap it
now I do that rather than tapping on the chuck key
because you risk snapping the chuck key off at the bottom here
especially if it's a hard and tough key
Put the chuck on
its importance that you make sure the chuck is locked up against the face
because if you just screw it on like that
and your machine when you stop the machine it's a possibility that this chuck will start to unscrew
with the momentum that the chuck's built up
just a quick tap to lock the chuck against the spindle
what I'm doing is just turning the chuck round
until I get the highest reading which is there slacken the back jaw off
and then tighten the front jaw up half the reading and turn it around
again and get the next highest reading
same again slacken the back jaw off and and tighten the front jaw up
it's just over a 0.001" run-out
so just check that all the jaws are tight
see how it runs
that's ok just put my tool in the tool holder
you can see there it's way above
move it up till it touches lock it
turn it around
I'll just put a center hole in
now I can use a small revolving centre to support the end of the bar
and turn this bar down to 8mm
the length of the screw needs to be 16mm touch the tool on the end
Zero the cross slide or the digital readout and then you can move up 16mm
take a rough check on the diameter 22. 37 mm
oh well that's it for today hope you enjoyed it and we'll see you next time
on Enots engineering