- [Instructor] Now I have one more component
that I need to constrain into position.
And that's the valve arm.
I have it hidden
so let's go ahead and turn that on.
With the valve arm,
I wanna take and basically constrain it
through this center plane
between the two bosses.
Now you'll see I have these tapered faces here, right?
These angled faces aren't really gonna
do me any good as far as positioning this
correctly in the model
so what I want to do at this point
is go back to that almighty reference set.
Talked about it before
and it's really important you understand this.
So inside of that reference set,
I'm gonna right mouse click,
go up to Replace Reference Set,
I'm gonna say Entire Part.
That reference set is now showing me
everything that's inside of this component,
that valve arm.
This plane,
because of the way it's designed,
runs from center to center of the arm.
I can use that plane to help constrain
this arm into position.
So with that,
I'm gonna go into Assemblies.
I'm gonna assemble my components to one another.
These are my assembly constraints.
And you'll note that,
if I come in here
and pick this face,
I know that this face
and this face here
are going to be
touching one another.
You'll notice it snaps into position.
Now, next
I want to take this axis to this face here,
there we go,
to this face here.
Everything snaps just the way that I want it to.
Now, next thing I want to do is
I wanna create a constraint
back to the housing.
I can constrain back to the cover,
but it's good practice to use
the fewest components to achieve
the constraints that you need.
So, in this case,
I'm gonna go ahead and hide the cover
and I'm gonna do what's called a distance constraint
because I want to create a distance
between this face and this face.
What's my distance?
The thickness of the cover.
I'll just say six.
So now, when I turn that cover back on,
you'll see everything snaps into place
just where it needs to be.
Now, at this point,
I need one more constraint.
That constraint is going to control
the angle of that arm.
So, to do that,
I'm just gonna switch over to Angle.
I wanna pick this face to this face
and right now, there's a slight little angle difference.
So I'll just come in here and say 45,
hit Enter and you'll notice
that at 45 degrees,
the stem, the plate,
everything constrained back to that arm.
So as I move that arm,
the whole sub-assembly of those components
are going to move with it.
So I'll just simply select OK.
I'm just gonna go back to my valve arm,
right mouse click,
replace my reference set,
go back to Model
and that way I don't have to see everything
to clean up my view.
And then now, if I look at my constraints,
go back to the bottom here.
There's my angle.
I can change that
and the assembly moves along with it.
Now if I look at my Constraint Navigator
and you'll see all of these
are now fully constrained
because the angle,
that final constraint is locking down the stem,
locking down the arm,
locking down the plate
so once I put that in there,
everything just is now fully constrained.
You don't necessarily have to have
full constraints on everything.
If you have fasteners,
a bolt,
a nut,
is it really necessary to hold the angular value of that?
No, once it's aligned and set properly,
who cares if it can spin in the hole?
It's just a virtual model
so it's not really important.
In a case like this, you wanna be able
to test out your assembly,
actually move it around
and it's pretty important to make sure
you have these things constrained.