& Construction
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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
& Manufacturing
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Professional CAD/CAM tools built on Inventor and AutoCAD
In this exercise you'll practice how to create a parametric sketch, create an extrude, use Fillet, and use Shell.
Exercise
Transcript
00:01
This is a practice exercise video solution
00:05
for this practice exercise.
00:07
Let's get started with the supply data set, trigger lock dot F three D,
00:10
we're going to be recreating the trigger lock on the reciprocating saw.
00:14
So let's get started by creating a new sketch and we'll select our right plane.
00:20
I'm going to zoom in
00:21
and I'm going to use my line tool to get started.
00:24
I want to create a line
00:27
and try to build out this shape.
00:30
Remember we're using a sketch canvas so we're not going to be able to
00:33
get it exactly correct but we want to get it as close as possible.
00:38
Once you're happy with the orientation, I'm going to go back and use the Philip tool
00:42
to apply rounded corners to each of these edges.
00:46
I want to be mindful of the radius value because
00:49
I am going to use a shell feature later.
00:51
I want to make sure that I can thin this down to at least 1.5 millimeters.
00:55
Once we're happy with that we can right click and say okay on the
00:60
next we want to make sure that we do dimension this.
01:02
So I'm going to add a horizontal and a vertical line.
01:07
And these are going to be references for me.
01:10
I also want to make sure that these are going to
01:12
be construction by selecting them and hitting X on the keyboard.
01:16
Now that I have these references,
01:17
I can use these to add an angle dimension and location dimensions.
01:22
So using the dimension tool, let's get started by first dimension.
01:25
In the angle here,
01:27
this is gonna be 14°.
01:29
Once we have one of the angles determined,
01:31
we can use the angles between internal edges in this case will say 60°
01:37
Between this bottom edge, we're going to say 108°.
01:42
And between these two edges
01:44
we're going to say 58°.
01:47
Now that we have those, we need to positively locate one of the corners.
01:50
I'm going to select the center point of this film
01:53
and my horizontal reference line to give it a vertical dimension of 47.25 mm.
01:59
Next I want to select that same point
02:01
and go all the way to my origin.
02:04
I'm gonna give it a horizontal distance of 130.25 mm
02:09
from here. I'm going to dimension to the center point of each of these filets.
02:13
This is going to be 2 mm
02:16
And then we'll add a dimension from that point back here,
02:19
horizontal dimension will be 15.5
02:22
and you can see now we have a fully defined sketch.
02:25
Let's go ahead and finish the sketch and extrude this into three D.
02:29
I'm gonna go ahead and use extrude and I'm
02:31
going to pull this outward a distance of eight
02:34
because I know this is a molded plastic part. I'm also gonna add one degree of draft
02:39
depending on the direction you're extruding. This may need to be a negative value.
02:44
Once we have the negative value,
02:45
I'm going to use my modify and fill a tool to add a rounded corner on the outside.
02:51
I want to add a thickness value of two,
02:53
which matches the radius that we had on the corners.
02:57
Next we can add a little bit more detail. If we want to add some of the recesses,
03:01
we don't have to exactly match the underlying image,
03:03
but we can right click on this face and create a new sketch
03:06
and we can just add some slots to add a little bit more shape.
03:10
So we'll select the slot tool,
03:12
we'll do a center to center slot
03:14
and I'm simply going to add a small slot here
03:18
and I'll add another one next to it and then
03:20
we'll come back and we'll dimension these in a minute
03:22
and I'll add one more just for a little bit of texture.
03:26
Some of the constraints have automatically been applied.
03:29
You can see there are parallel constraints between some of the edges and centers.
03:33
Now we want to make sure that the radius value of all three are the equal.
03:37
And I'm going to add a constraint for these bottom edges but
03:42
I want to add a line that goes between all of them.
03:44
So I'm going to add a line here and another line here.
03:48
I want to turn these into construction by selecting them hitting X on the keyboard
03:52
and then I also want to make them co linear with each other.
03:56
Then we can make one of these lines parallel with the bottom edge
03:60
escape to get off our constraint tool.
04:02
Go ahead and pull this down
04:03
and we can manipulate the tops.
04:06
If you get into a situation where the slots start to get deformed,
04:11
let's go ahead and do undo and start to apply some dimensions.
04:15
We'll add a dimension between these points
04:18
given
04:20
and we'll do the same thing over here.
04:23
I'm going to select the original 2.5 to link them together
04:26
And now I want to determine its distance from this corner.
04:30
I'm also going to make this 2.5 mm.
04:34
Now we need a radius value.
04:36
This is gonna be .75
04:39
and then we can determine the heights
04:43
For this. I'm going to say 3.5 mm for the back one.
04:48
We're gonna give this one a three millimeter height and
04:51
we're going to give this one a 2.5 millimeter height.
04:56
Next we'll dimension the distance between these parallel edges at .75,
05:01
you can see this is still not fully dimension.
05:04
We're gonna hit escape on the keyboard.
05:05
And as we begin to try to drag things around,
05:08
you'll notice that the angle is not fixed yet.
05:10
So we'll take one of these center lines,
05:12
we'll take the side line and we'll go ahead and make this parallel.
05:17
We'll finish the sketch, we use E to extrude
05:21
And we'll go ahead and remove a small amount of material
05:24
once again because these are injection molded parts,
05:27
we're going to go ahead and use a -1° draft
05:29
to make sure that we have draft on these features.
05:32
The last thing that we're going to do is hide
05:34
the canvas and we're going to shell the backside.
05:38
I'm going to use a 1.5 millimeter value and you'll notice that the operation failed,
05:43
partially failed because of these features.
05:45
If this ever happens, we can cancel out,
05:48
we can roll back the timeline before the extrude before
05:51
we add those details and then try the shell again
05:54
once more. Let's try 1.5 millimeters and you can see that it is able to be generated.
05:59
Will say, okay,
06:01
and then we'll roll the feature back to the end of the timeline.
06:05
Now we've used the canvas image and we've
06:07
created a rough approximation of the trigger lock
06:10
at this point. Let's go ahead and save the design before moving on.
00:01
This is a practice exercise video solution
00:05
for this practice exercise.
00:07
Let's get started with the supply data set, trigger lock dot F three D,
00:10
we're going to be recreating the trigger lock on the reciprocating saw.
00:14
So let's get started by creating a new sketch and we'll select our right plane.
00:20
I'm going to zoom in
00:21
and I'm going to use my line tool to get started.
00:24
I want to create a line
00:27
and try to build out this shape.
00:30
Remember we're using a sketch canvas so we're not going to be able to
00:33
get it exactly correct but we want to get it as close as possible.
00:38
Once you're happy with the orientation, I'm going to go back and use the Philip tool
00:42
to apply rounded corners to each of these edges.
00:46
I want to be mindful of the radius value because
00:49
I am going to use a shell feature later.
00:51
I want to make sure that I can thin this down to at least 1.5 millimeters.
00:55
Once we're happy with that we can right click and say okay on the
00:60
next we want to make sure that we do dimension this.
01:02
So I'm going to add a horizontal and a vertical line.
01:07
And these are going to be references for me.
01:10
I also want to make sure that these are going to
01:12
be construction by selecting them and hitting X on the keyboard.
01:16
Now that I have these references,
01:17
I can use these to add an angle dimension and location dimensions.
01:22
So using the dimension tool, let's get started by first dimension.
01:25
In the angle here,
01:27
this is gonna be 14°.
01:29
Once we have one of the angles determined,
01:31
we can use the angles between internal edges in this case will say 60°
01:37
Between this bottom edge, we're going to say 108°.
01:42
And between these two edges
01:44
we're going to say 58°.
01:47
Now that we have those, we need to positively locate one of the corners.
01:50
I'm going to select the center point of this film
01:53
and my horizontal reference line to give it a vertical dimension of 47.25 mm.
01:59
Next I want to select that same point
02:01
and go all the way to my origin.
02:04
I'm gonna give it a horizontal distance of 130.25 mm
02:09
from here. I'm going to dimension to the center point of each of these filets.
02:13
This is going to be 2 mm
02:16
And then we'll add a dimension from that point back here,
02:19
horizontal dimension will be 15.5
02:22
and you can see now we have a fully defined sketch.
02:25
Let's go ahead and finish the sketch and extrude this into three D.
02:29
I'm gonna go ahead and use extrude and I'm
02:31
going to pull this outward a distance of eight
02:34
because I know this is a molded plastic part. I'm also gonna add one degree of draft
02:39
depending on the direction you're extruding. This may need to be a negative value.
02:44
Once we have the negative value,
02:45
I'm going to use my modify and fill a tool to add a rounded corner on the outside.
02:51
I want to add a thickness value of two,
02:53
which matches the radius that we had on the corners.
02:57
Next we can add a little bit more detail. If we want to add some of the recesses,
03:01
we don't have to exactly match the underlying image,
03:03
but we can right click on this face and create a new sketch
03:06
and we can just add some slots to add a little bit more shape.
03:10
So we'll select the slot tool,
03:12
we'll do a center to center slot
03:14
and I'm simply going to add a small slot here
03:18
and I'll add another one next to it and then
03:20
we'll come back and we'll dimension these in a minute
03:22
and I'll add one more just for a little bit of texture.
03:26
Some of the constraints have automatically been applied.
03:29
You can see there are parallel constraints between some of the edges and centers.
03:33
Now we want to make sure that the radius value of all three are the equal.
03:37
And I'm going to add a constraint for these bottom edges but
03:42
I want to add a line that goes between all of them.
03:44
So I'm going to add a line here and another line here.
03:48
I want to turn these into construction by selecting them hitting X on the keyboard
03:52
and then I also want to make them co linear with each other.
03:56
Then we can make one of these lines parallel with the bottom edge
03:60
escape to get off our constraint tool.
04:02
Go ahead and pull this down
04:03
and we can manipulate the tops.
04:06
If you get into a situation where the slots start to get deformed,
04:11
let's go ahead and do undo and start to apply some dimensions.
04:15
We'll add a dimension between these points
04:18
given
04:20
and we'll do the same thing over here.
04:23
I'm going to select the original 2.5 to link them together
04:26
And now I want to determine its distance from this corner.
04:30
I'm also going to make this 2.5 mm.
04:34
Now we need a radius value.
04:36
This is gonna be .75
04:39
and then we can determine the heights
04:43
For this. I'm going to say 3.5 mm for the back one.
04:48
We're gonna give this one a three millimeter height and
04:51
we're going to give this one a 2.5 millimeter height.
04:56
Next we'll dimension the distance between these parallel edges at .75,
05:01
you can see this is still not fully dimension.
05:04
We're gonna hit escape on the keyboard.
05:05
And as we begin to try to drag things around,
05:08
you'll notice that the angle is not fixed yet.
05:10
So we'll take one of these center lines,
05:12
we'll take the side line and we'll go ahead and make this parallel.
05:17
We'll finish the sketch, we use E to extrude
05:21
And we'll go ahead and remove a small amount of material
05:24
once again because these are injection molded parts,
05:27
we're going to go ahead and use a -1° draft
05:29
to make sure that we have draft on these features.
05:32
The last thing that we're going to do is hide
05:34
the canvas and we're going to shell the backside.
05:38
I'm going to use a 1.5 millimeter value and you'll notice that the operation failed,
05:43
partially failed because of these features.
05:45
If this ever happens, we can cancel out,
05:48
we can roll back the timeline before the extrude before
05:51
we add those details and then try the shell again
05:54
once more. Let's try 1.5 millimeters and you can see that it is able to be generated.
05:59
Will say, okay,
06:01
and then we'll roll the feature back to the end of the timeline.
06:05
Now we've used the canvas image and we've
06:07
created a rough approximation of the trigger lock
06:10
at this point. Let's go ahead and save the design before moving on.