welcome to Enots engineering I'm Alan today we'll be making a part on the CNC
machine it's the plate that tells you what angle
you set the table to on the tool & cutter grinder so we'll go through the
stages have you set up the program and how we made it on the machine it's made
out of a car number plate so let's see how we did.
use the pointer to mark the position on the back of the knob of the two holes
drill two holes about three mil diameter and then make two brass rivets and
rivet the pointer on the back of the knob I'll show you how I made the angle
plate with the degrees how how I transferred from the drawing into a CNC
program now first of all what I've got on here the red line represents the side
of my tool & cutter grinder which is a steel pressing so I've draw that out
first then the green lines of the part I'm going to make moving on the green
area this is a drawing of the part finish part and you can see it's got
numbers around there the angle and the degrees are all marked out.
So the way I do this is to draw what you need straight on to this program which is called
Cam ban so that you can transfer that into a CNC program which can be loaded
into the CNC machine and cut the part exactly the same so first of all I've
got here we've got a hole and on this side and the left-hand side you can see
the hole diameter and the hole position in X and Y which you can alter so can
control exactly where that hole will be same on this side and on the hole
but I did the CNC program to cut the finger out of course once you've got that you
can over lay the finger on the part get the positioning right the radiuses of
these lines correct then all you need to do is Mark the end angles out.
I did the angles by puts a paper on the side panel put the finger on the zero
position and then tilt the table two degrees a time and marking out the
angles and then transferred that. so once I know the distance between each
two degree angle I could step it round on here put the lines in marke this out
once I've got the drawing done I can then transfer the drawings to the CNC
program and why you do that is if you look on this side these are all the arcs
and the lies I can select an arc or a line they're all separate items to be
cut so on the machining from down here this is the first line the machine will
do this and you can select here the speeds of feed the depth type of cutter
so basically you select each line and then once you select what sort of shape
in other words these are all engraving so when I selecting the engraving it'll come
up on this side and you build up a list of engraving with the two holes and
then the outside profile on the outside profile if you cut this out without the
holding tabs which is these squares what will happen is when you come to the near
that cutting through this middle bit will come loose you could wrap around
your cutter or fly over the workshop but by putting a holding tab in which are
these this bit is not machine here so when as the cutter comes around you lift
up go across the top and go back down to leave this bottom of the material still
attached so on the component you've got six areas where the the metal piece that
you want is still attached to the original piece of metal so
not loose then all you do is when you finished your machining snip out these
bits file the edges off and the parts finished but once it's done as a drawing
and you've converted it into different operations you then go into machining
produce g-codes and then the computer will produce the
code now to find out whether that code is okay this is telling me now this is
where the tools the cutters going to cut on the outside so you know it's in the
right area as these are engravings it's only gonna touch the surface so it's not
cutting through the two holes show me that cutters gonna cut on the inside of
the marked area so in other words if that was a five mill hole and I had a
three mill cutter I could cut it either on the outside of the the marked hole or
on the inside and obviously the difference with Bailey
one would be bigger than the other because of the cutter diameter so you
just checked in everything's okay there and then another program that's linked
into this is cut viewer so I then just click onto that it pulls the program in
to cut viewer Press run this is the actual machining being one simulated on
the program and I can zoom in on that it's quite a distance away
and then as you get closer you can see the degrees the bit see where the tabs
are it's not cut through look at this one in 3d you can actually move the part
round to see what it looks like at the thickness of the work make sure it's
okay it will actually tell you if you've got fixtures fitted you all tell you if
you're going to hit the fixtures so that's how I produce my program on
the left here you can see the actual program lines of code for the CNC machine
then all I do is save that on to a memory stick and load it into the mach 3
on the CNC machine the program has been loaded into the CNC machine so we'll
start the Machine off and cut the part
to adjust the angle you slacken and nut off on the other side hold this turn it
to whatever angle you need to set it
just lock it Well thanks for watching I hope you've enjoyed it and we'll see
you next time on Enots engineering