The cage four
cylindrical roller bearing will be comprised of a single piece
of machine press depending on the bearings, application and price margin
cages can get significantly more elaborate in their design.
To design our cage, we're going to create a simple extruded coat of the ideal body
and then cut the roller pocket with an extruded cut.
And then we're going to pattern that cut to create all of our pockets.
So we will start by creating a new sketch on the top
plane
where we will create two concentric circles.
This will serve as our cage I.D.
and o.d.
We will set the o.d to be equal to
31 millimeters,
and we'll set our
ID to be equal to 27 millimeters.
Now, sketch is fully defined or exit our sketch
and create a new extruded bar space
for the end condition will set it to mid-point to center our part
and for the width we will set it to 14 millimeters,
which is slightly smaller than our race with
because we don't want the cage to come in contact with anything
from the next tire assembly that the bearing is going into.
We always want to be slightly smaller than the width of the cages,
so hit okay to create our solid part
and we'll create a new sketch on the front plane
to create our ball pocket.
So just get normal to here
and we're just going to create a simple center point rectangle
centered about the origin
for the with.
We will set it to 7.01 millimeters
and for the height we will set it to
10.25 millimeters,
which will give the roller some clearance.
And before we exit the sketch, we're going to create
some sketch fillets on the corners of our pockets
just to break these sharp edges.
So we're going to create a 0.5 millimeter, fill it on each corner.
To do this, we're just going to select each line
and it will project a fill it into the corners
of the adjacent lines
and hit okay.
Now we'll exit our sketch
and with the sketch highlight, it will select extruded cut
and just select through all it.
Okay?
Now we want to pattern our cut
around our cage, so we're going to select it
in our feature tree and go up here and select circular pattern
for direction one.
We're just going to pick the idea of our cage
and for the number of instances we'll select nine
because that is the number of rollers in our assembly
and we'll hit okay,
the last thing we're going to do is set our material
to edit our material here
and we will set our material press,
which can be found under the Copper Alloys
folder.
The reason we're picking brass is because it's softer than the hardened
steel of the rollers and the braces, so it will help
prevent wear of the rollers as the bearings spins.
We've now completed our cylindrical roller
bearing cage, which was the last component in this assembly.
In our next video, we'll start putting our roller
bearings together.