Welcome to Enots engineering I'm Alan
in todays video we make five t-nuts to fit the CNC machine
These are specially made to suit the aluminium extrusion on the CNC machine.
All the milling is done in the lathe so let's go into the workshop
and see how we make them
Today in the workshop I want to make some tee nuts for the CNC machine
what I'm using is aluminium then I cut out for the Machine backplate cut these
shapes out so I've got lots of these aluminium triangles I've marked this one out
and the cut it in the bandsaw and make some tee nuts for the bed of the CNC
I will do the milling on the lathe
so the first thing I need to do is set the tool post parallel to the chuck.
What I'm doing is holding my dial indicator across the jaws clamp it this means I
can move the dial indicator up and down to get in the right position
you don't need to clamp it tight in the jaws just enough to hold it
bring it into the tool post and then by adjusting the tool post you can set this to run true
it's about four thou over that length
that's 0.0002"
The aluminium I'm using that's been sawn off just on the bandsaw
that side that's got another saw cut on that side so I want to make one side square
I'm just using a piece of packing on the top so that I don't damage the
surface of the aluminium with the locking cap heads
lock that in position
what I want to do next is put the fly cutter in the chuck
and I'll adjust the height of this so the aluminium is near the center of the chuck
it's not critical it's just so that the fly cutter cuts evenly each side
Just check that I can move the full the length of that piece of aluminium
and that the cutting bit will travel right to the end that's at the end of my travel
it should be okay
I,ve change the fly cutter to an end mill with four flutes
so I've roughed it out now can get a better finish on there I've set the
aluminium to the center of the cutter
What I've done is I've changed my tool holder to one that holds a wider tool this was
the original one I was using as you can see I can't get this piece of aluminum
inside words when I can on this one I've put some packing at the back to bring it
out 3mm so when I go 3mm deep it'll miss this tool holder and
I've put a smaller-diameter end mill in so it only comes up 6.25mm
which is the depth I need to go so what I need to do now is machine
that until it's 3mm deep turn the part round
and do the same on the other side and that should give me the width I need in the middle.
Now I need to reduce the thickness by 1mm.
So I've fitted it in a four jaw chuck and I'm facing off the part
now after taking off some of the sharp edges that slides in that slides in there
So all I need to do now is drill and tap M6 holes and then slice them off in two the nuts
I fitted the blank for the t-nuts in the pedestal drill vise and I've
marked out will get five T nuts out of this and I'll position the center drill
in the center this way and in the center for the first hole for the first nut so
what I'm going to do is centre drill all the positions change it to a 5mm drill
and then drill through all the holes
and the way I Centre and position the parts is
I've got fitted to my drill press table an X&Y axis so I
can position the part anywhere within this area it's a little heavy for these
drilling machine but it seems to be coping with it
so now I have to wind it over 0.750"
that's finished item now on this one when I tighten this bolt up and clamp
something on it the top of the t-nut doesn't protrude over the top of the bed
five new two nuts well that's it for today I hope you
enjoyed it and we'll see you next time On Enots engineering