Project practice exercise

Create a mold core and cavity for an injection molded saw trigger.

After completing this practice exercise, you'll be able to:

  • Review a design.
  • Create a mold base.
  • Use Boundary Fill.

Exercise

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00:01

This is a practice exercise video solution

00:05

for this practice.

00:06

We'll get started with the supplied data set trigger model dot F three D.

00:10

This design was created as a solid part and can be pulled in the X direction.

00:15

We're going to be creating a core and cavity mold for this part.

00:18

And we'll get started by first creating a sketch.

00:21

The sketch will be placed on the Y. Z.

00:23

Plane and we need to create a box that's

00:25

large enough that can encompass the entire trigger.

00:28

So we'll create a box and in this case we're going to make the box 50

00:32

tall and we'll make it 100

00:35

wide.

00:36

We want to get it roughly centered while it's not strictly required.

00:39

We do want to get it close and we'll add some dimensions.

00:42

So that way we can place it relative to the design

00:46

at a 45 millimeter dimension to the right from the origin

00:50

and we'll add a 25 millimeter dimension to the top from the origin

00:54

and finish sketch.

00:56

Next we use extrude to create a box that can completely encompass the design.

01:01

One thing that we can do here is we can use the intersect option

01:04

and make sure that we are seeing the entire design inside of this box.

01:08

And once we're happy with the overall dimensions,

01:11

we're going to say that we want to create a new body or a new component

01:15

in this case. We'll use the new body option

01:18

Before I go any further. I'm going to expand the bodies folder,

01:21

right click on body one and change the opacity

01:24

to 30%. So I can see inside of the design

01:28

from here. We're going to go to create boundary fill and we want to select the tools.

01:35

In this case we're going to have the main body which is going

01:37

to contain our mold and we also want the body of the trigger.

01:42

Next we want to select the cells and notice that there are two boxes here.

01:46

We want to select the box that represents the overall mold itself.

01:51

And we want to make sure that we find the correct box.

01:54

This is going to represent the center of origin of that component.

01:57

We want to create a new body and we're not going to use the removed tools option.

02:01

We're simply going to say, okay,

02:03

so notice that we have two bodies. Now if we hide body too,

02:07

we're left with body one and if we hide body one, we're left with the trigger inside.

02:12

Let's hide the trigger component

02:13

will show body to

02:15

right click and change its opacity to 30%.

02:18

We can see now that there is a cavity inside.

02:22

The next thing that we need to do is split this at

02:24

the parting line because the part was designed about the origin.

02:28

This is a relatively straightforward process by using the split body tool.

02:33

The bodies to split will be body too

02:35

and the splitting tool, we can use one of our planes

02:38

will hold down the left mouse button and we'll make sure that we select the Y. Z.

02:42

Plane, allowing it to extend and say, okay

02:46

Now you can see that we've got both sides of our mold. I'm gonna call body to Mold B.

02:52

and body three mold a

02:58

body one should be a solid original version of the design.

03:02

You can see that this is simply a rectangular

03:05

body that does not have the core removed.

03:08

Now you can see that we've got mold B. And mold A.

03:12

Because we no longer need to see inside of these.

03:14

I can go back to opacity control and set it to 100% for both mold a. And Mold B.

03:22

Now that we have these designs.

03:23

Another step could be to use inspect and draft analysis to

03:27

make sure that we don't have any problems with draft.

03:29

Under design

03:30

the direction will be this and I'm going to go

03:32

ahead and set my values down to half a degree

03:37

and make sure that everything on the inside is green.

03:40

You can see there are some areas here where some of the draft starts to turn yellow,

03:44

which means that we have a tolerant zone.

03:46

Let's go ahead and turn that off and make sure

03:47

that all the areas are green on the inside.

03:50

Everything looks good from here. I'm going to select, cancel

03:54

and make sure that I do save the design before moving on

Video transcript

00:01

This is a practice exercise video solution

00:05

for this practice.

00:06

We'll get started with the supplied data set trigger model dot F three D.

00:10

This design was created as a solid part and can be pulled in the X direction.

00:15

We're going to be creating a core and cavity mold for this part.

00:18

And we'll get started by first creating a sketch.

00:21

The sketch will be placed on the Y. Z.

00:23

Plane and we need to create a box that's

00:25

large enough that can encompass the entire trigger.

00:28

So we'll create a box and in this case we're going to make the box 50

00:32

tall and we'll make it 100

00:35

wide.

00:36

We want to get it roughly centered while it's not strictly required.

00:39

We do want to get it close and we'll add some dimensions.

00:42

So that way we can place it relative to the design

00:46

at a 45 millimeter dimension to the right from the origin

00:50

and we'll add a 25 millimeter dimension to the top from the origin

00:54

and finish sketch.

00:56

Next we use extrude to create a box that can completely encompass the design.

01:01

One thing that we can do here is we can use the intersect option

01:04

and make sure that we are seeing the entire design inside of this box.

01:08

And once we're happy with the overall dimensions,

01:11

we're going to say that we want to create a new body or a new component

01:15

in this case. We'll use the new body option

01:18

Before I go any further. I'm going to expand the bodies folder,

01:21

right click on body one and change the opacity

01:24

to 30%. So I can see inside of the design

01:28

from here. We're going to go to create boundary fill and we want to select the tools.

01:35

In this case we're going to have the main body which is going

01:37

to contain our mold and we also want the body of the trigger.

01:42

Next we want to select the cells and notice that there are two boxes here.

01:46

We want to select the box that represents the overall mold itself.

01:51

And we want to make sure that we find the correct box.

01:54

This is going to represent the center of origin of that component.

01:57

We want to create a new body and we're not going to use the removed tools option.

02:01

We're simply going to say, okay,

02:03

so notice that we have two bodies. Now if we hide body too,

02:07

we're left with body one and if we hide body one, we're left with the trigger inside.

02:12

Let's hide the trigger component

02:13

will show body to

02:15

right click and change its opacity to 30%.

02:18

We can see now that there is a cavity inside.

02:22

The next thing that we need to do is split this at

02:24

the parting line because the part was designed about the origin.

02:28

This is a relatively straightforward process by using the split body tool.

02:33

The bodies to split will be body too

02:35

and the splitting tool, we can use one of our planes

02:38

will hold down the left mouse button and we'll make sure that we select the Y. Z.

02:42

Plane, allowing it to extend and say, okay

02:46

Now you can see that we've got both sides of our mold. I'm gonna call body to Mold B.

02:52

and body three mold a

02:58

body one should be a solid original version of the design.

03:02

You can see that this is simply a rectangular

03:05

body that does not have the core removed.

03:08

Now you can see that we've got mold B. And mold A.

03:12

Because we no longer need to see inside of these.

03:14

I can go back to opacity control and set it to 100% for both mold a. And Mold B.

03:22

Now that we have these designs.

03:23

Another step could be to use inspect and draft analysis to

03:27

make sure that we don't have any problems with draft.

03:29

Under design

03:30

the direction will be this and I'm going to go

03:32

ahead and set my values down to half a degree

03:37

and make sure that everything on the inside is green.

03:40

You can see there are some areas here where some of the draft starts to turn yellow,

03:44

which means that we have a tolerant zone.

03:46

Let's go ahead and turn that off and make sure

03:47

that all the areas are green on the inside.

03:50

Everything looks good from here. I'm going to select, cancel

03:54

and make sure that I do save the design before moving on

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