- [Instructor] Here, I set up a part to demonstrate
the hole function, and there's several options
within the hole function that basically
carry out through pad and pocket as well,
that I wanted to wait 'til the hole function to get to it
because it's really easy to demonstrate these options.
And those options that I'm talking about within
hole function are going to be the extension.
Basically, how deep or how tall, how long,
how far, does something go?
You'll notice here, I have blind, up to next,
up to last, up to plain, and surface.
If I go into the pad, you'll see I have
the same thing, I have the dimension,
means at blind, up to next, up to last,
up to plane, up to surface, so those options
are there within pocket as well.
Now, when I go into the hole function,
this is where sometimes the interface
gets a little confusing for some people,
and the reason behind it is, I have a function,
it's active, but I don't see a menu appear.
Now, again, if you read your cue line down at the bottom,
you'll see, it's asking for select a face or a plane.
And next to that, it says, optionally select
a point or a line to position.
So what this is getting at is,
where do you want your hole to go?
Now, I'm just going to pick this top face.
Once I select this top face, wherever I select,
you'll notice, is the exact center of that hole.
I'm going to zoom up on a little bit,
and you'll see quite a few things going on here.
You'll see the bottom, which is the depth.
You'll see the diameter value,
which is that diameter here.
You'll also see these little crosshairs.
This is basically the position of the hole,
so if I grab these, I can move it around and
place a hole where I want.
Again I can drag the bottom to the depth that I want.
Very similar to the pad, pocket, such,
I can grab those handles, move 'em around.
Now I also have the normal to surface.
I picked that plane or face, so it's going
to normal surface.
If I have tooling direction, I'd specify
that tooling direction, and you'll notice
I also have the bottom.
Currently it's a V bottom.
I also have a flat bottom.
So you can change that right there on the fly,
quick and easy.
That being said, positioning the sketch,
obviously more than simply eyeballing it,
is going to be very important.
This positioning sketch is the center point
of that hole, so when I click on that,
you'll notice it takes me into the sketcher
and I get this little point.
So now all I have to do is constrain this
to where I want that hole to go.
So if I pick, say this edge, to this point.
I can now place it where I want.
I can now go to this edge, same point,
and you'll notice that it goes green,
indicating that the location of the point
is fully constrained.
Once I'm done, I exit out, and just like that,
your hole has moved to the new position.
So that's what that positioning sketch is all about.
Now, as far as the depth goes,
as I said, you can control the depth,
but there are certain things that you can do
with the depth, like I said, pad, pocket,
and the rest of them have, is I can say up to next
for instance.
And what this will do, is it will automatically,
always tell the hole to go all the way
to the next face, okay.
So with this up to next, in this regard,
it automatically calculates the depth.
You'll see that's my depth that it has to go through
to go to the next face.
I also have up to last, up to last will drill through
everything, all the way to the last face.
I have other options here, such as up to plane.
If I want to, I can specify a plane or face
that I want to go up to.
Another option is up to surface,
so if you don't have a plane or face
that you want to go to, you have a curved surface,
like I have here, I can pick that curved surface,
and it'll go up to that curved surface
and stop there.
Now, one of the dangers of this,
as a warning to you, 'cause this is something
that I see quite frequently, is currently
everything works just fine.
Somebody says, oh we need to make that hole
a little bit bigger, so we make the hole
a little bit bigger, and then all of a sudden,
you end up with a hole without any warning
that goes completely through the part.
And the reason behind that is,
this face no longer completely cuts off the hole.
This extends out beyond this surface.
In certain instances, it will actually
cause the hole to fail, and in other instances,
like in this case, it just punches a hole
through the entire part.
So I'm notifying you that when you are using these options,
to be very cautious okay?
Now, another cautionary tale for you,
is I'm just going to make another hole on this face,
and I'm going to say up to last.
Everything works just fine, just the way
you want it to work.
Now if I double click on this,
and I know, this isn't realistic unless maybe
you're 3D printing, or injection molding,
or something along those lines,
but I'm going to go in here, and I'm going to change
the type of hole.
Right now it's just a standard hole.
If I come in here and say something
like countersunk hole, and increase my depth,
everything looks fantastic.
And somehow magically, that countersink
goes into this back wall over here.
You can see it's just nicking it a little bit.
You'll see that hole punches all the way through,
and some people look at that and say,
well that's a failure, and what the system does,
it's very intelligent.
It realizes that in order to manufacture this,
remember you're typically drilling holes out,
in order to drill that hole out,
necessarily you would have to drill through the part
to get this hole to look that way, right?
Remember that countersunk portion,
even if it were counterbored, came into this wall.
Because it hits this wall, it realizes
that this is necessarily, need to be removed
in order to create that countersink,
and by using the up to next, up to last,
any of these functions, you can potentially
create problems that you didn't want to create.
So just be very cautious.
Now if I move that away, you'll see
that everything gets fixed, alright.
So just be very cautious with how you're using
your extensions, how you're using the up to next,
up to last, up to plane.
Quite often I will use up to plane
because I know I want to go up to something,
or if I know I want to go through the part completely,
I will use the up to last, but any time
I start going into any of the various types,
like in this case, a countersink,
I will be very careful to make sure
that whatever I'm placing it on,
I won't get a modification or an edit
that causes some sort of catastrophic design failure.
Now with this, you can also add counterbored holes,
alright, so let me increase my diameter
on the counterbored.
You can see here, the counterbored depth and the diameter.
This is just this area up here.
Actually, let me double click on that,
and bring this up to the front wall,
so you can actually see it better.
There we go.
A little bit more.
So there's your counterbored, and once again,
you can see in order to get to the counterbored,
because it's punching through these faces,
it wants to go all the way up through to the top.
So extremely powerful tool, very, very powerful tool,
but be very cautious when you are placing your holes
about where they go, how you have them placed,
how you have them dimensioned, if something grows.
I've seen in the field, some pretty drastic
things happen by not being totally cautious
with the hole function.
Again, it's a very powerful, actually one of the more
powerful hole functions I've used in any CAD system.
So just be warned, a little careful
about how you do apply it.
Now if I bring this back, you'll notice that
because it's no longer piercing these external faces,
these outside faces, it doesn't go back
all the way up and through.
So it's just understanding how that hole
algorithm is working and making sure
that you don't end up with less than desirable results.
So we also have other hole types.
As you can see, I have counterbored.
I have, you saw me do the countersunk.
I have counterdrilled.
Counterdrilled is a combination of a countersink,
as you can see, and a counterbored.
You'll see a lot of hydraulic connections
set up with this type of interface.
And you also have tapered.
Let's do a 10 degree, and move this away
from that edge, bringing it back into a safe zone,
so you can now do a completely tapered hole.
And you'll notice that, with my parameters,
my taper, I have an anchor point.
Where is it tapering from?
Is it holding the bottom or is it holding the top?
I can say hold the top, and it'll taper in,
in this case, next to nothing because I am going so deep.
But if I bring this back up, you'll see
there's my tapered hole.
If you want to apply a thread, I'll go to threaded,
let me just go back to simple to not overly
complicate things, and now, based off of that,
you can come in here and specify the type of thread
that you want.
So if you have a thread library, a little text file,
you can go in there and have your database admin
put the text file into the correct area,
you can link to that text file,
and here, you can specify what type of thread that you want.
Now when I do say, in this case, a metric thick pitch,
I'm going to get a message saying the hole diameter
doesn't work for the thread diameter
that you specified, so it's actually going to change
the hole diameter, and now you just basically
specify the size of thread that you want,
and it'll automatically size the hole diameter.
So it's a good tool, very powerful,
just go and be cautious with how you use it.