Transcript
00:08
Hello, my name is Thom Tremblay from Concepts and Design.
00:12
This course is on a modern approach to creating documentation.
00:17
The learning path for this course will look at annotating a 3D model and sharing the annotated model,
00:25
analyzing tolerance relationships in an assembly, and then sharing the results of that analysis.
00:32
This is the second course in the series and this course will be in two parts.
00:38
The first part will be focusing on defining feature datums, adding tolerance ranges to the dimensions,
00:46
placing surface callouts, and while doing all of this, we'll also be taking a look at the tolerance advisor.
00:55
We'll begin with a model that already has some annotations.
00:58
These annotations are similar to those that were applied in the first course, if you haven't seen that.
01:06
Before we begin applying tolerance dimensions to the model and applying geometric tolerancing frames,
01:13
let's take a look at how we can control overall tolerances for the entire model.
01:21
From the Tools tab, you can select the Document Settings.
01:25
Document Settings control individual documents.
01:29
In this dialogue, you'll find the default tolerance tab,
01:32
where you can apply standard tolerancing to the entire model based on the precision of the dimension.
01:39
This model has some two place and three place dimensions.
01:42
So we can apply a default tolerance to those dimensions without having to edit them directly.
01:50
Another way you can apply tolerances is to specific dimensions.
01:55
Activating the sketch of the bores that hold the bearings in the hole that the shaft passes through,
02:01
you can edit any sketch dimension and from the dimension value, expand it and select tolerance.
02:10
If you've worked in the parameters dialogue box, you might recognize the four icons in the upper right.
02:16
They represent the maximum, minimum, median, and nominal value for the dimensions.
02:24
From the tolerance type, we'll select limits using fits that show the tolerance.
02:32
This will enable the selection of a specific fit to apply to that dimension.
02:38
For this model, I'll select F10.
02:43
You'll see immediately that the sketch dimension is updated showing the tolerance range for that dimension.
02:53
Now that we have some of the background complete,
02:55
let's go ahead and start out by going to the Annotation tab and starting the Tolerance Feature tool.
03:02
The first thing I'll select is the back face of the cover.
03:06
We'll use this as a primary datum.
03:09
After clicking OK, I get a preview of the tolerance frame and when I place it in the design, I'll get a dialogue in the upper right.
03:17
This will give me the same representation as well as a number of options.
03:22
I can turn off making this a datum simply applying the geometric tolerance.
03:27
But I want to keep this datum.
03:30
I can also choose the control that's being applied.
03:33
We'll leave it Flatness, but I do want to change the value to 10,000.
03:39
When I'm happy with it, I'll click the plus sign to apply.
03:43
As soon as I do this, the Tolerance Advisor pops up.
03:47
The Tolerance Advisor will give you advice and guidance on things that you might want to change or that need attention.
03:56
For example, right now, this model contains dimensions that weren't placed using these tools.
04:02
One or more of the surfaces need dimensions to constrain them.
04:06
And not all of the degrees of freedom of the part have been constrained.
04:11
Right now, we only have one datum.
04:13
That is shown in the Tolerance Advisor as well as not being referenced.
04:18
Because we don't have any dimensions or other control frames that reference this A datum, that message is appearing.
04:27
Now let's place another tolerance feature by selecting the bore that the bearing is going to set in.
04:34
You can see when we click OK, we get a preview of the dimension including the fit that was applied as well as a control frame for perpendicularity.
04:45
When I click to place this dimension again, I get the dialogue where I can make modifications.
04:52
Again, we can turn off whether or not this will be applying the B datum and set the value for the tolerance.
05:03
Then we'll hit "Apply" again.
05:05
We see that now the reference to the A not being referenced is gone.
05:10
But now there's a reference saying that the combination of A and B datums has not been referenced.
05:16
This is to be expected.
05:17
Let's continue on.
05:22
We'll select the hole that the shaft will pass through.
05:24
You'll notice that we're not automatically offered another datum.
05:29
That's because this hole is concentric and applying a datum to it probably wouldn't be of any value,
05:35
but we are getting not only a dimension but a position control that references that A B datum.
05:44
We can click the dimension value in the dialogue, set a deviational tolerance, add our values.
06:04
And when we're done, we'll just click OK.
06:08
Now, here is something interesting.
06:10
In the Tolerance Advisor, we now have a warning that the orientation tolerance must be smaller than the position.
06:18
So I'll go in and modify the position tolerance.
06:22
Give it a little bit more flexibility.
06:25
When I click OK, the warning is gone.
06:29
At any time if we want to make a modification to one of these dimensions or the tolerances,
06:34
all we have to do is a simple double click and we can go in and change, for example, to Symmetry Tolerance and give it a value.
06:46
Finally, let's add some surface texture callouts.
06:49
We'll select the back face first.
06:52
Since this is going to be machined, we'll just leave it a 125 value.
06:58
But since we'll be using a gasket, we'll do just a little bit of cross hatching on it.
07:03
So we want this surface to be judged based on the crossed surface.
07:09
Then let's apply a texture to the bore for that bearing.
07:14
This we want to be a bit smoother.
07:16
Maybe we'll hone it out and we'll make this 63.
07:22
Now that we have the basic tolerances put in place,
07:26
we're ready to start taking a look at how we want to share this information or display it for others.
07:32
That will be the next part.
00:08
Hello, my name is Thom Tremblay from Concepts and Design.
00:12
This course is on a modern approach to creating documentation.
00:17
The learning path for this course will look at annotating a 3D model and sharing the annotated model,
00:25
analyzing tolerance relationships in an assembly, and then sharing the results of that analysis.
00:32
This is the second course in the series and this course will be in two parts.
00:38
The first part will be focusing on defining feature datums, adding tolerance ranges to the dimensions,
00:46
placing surface callouts, and while doing all of this, we'll also be taking a look at the tolerance advisor.
00:55
We'll begin with a model that already has some annotations.
00:58
These annotations are similar to those that were applied in the first course, if you haven't seen that.
01:06
Before we begin applying tolerance dimensions to the model and applying geometric tolerancing frames,
01:13
let's take a look at how we can control overall tolerances for the entire model.
01:21
From the Tools tab, you can select the Document Settings.
01:25
Document Settings control individual documents.
01:29
In this dialogue, you'll find the default tolerance tab,
01:32
where you can apply standard tolerancing to the entire model based on the precision of the dimension.
01:39
This model has some two place and three place dimensions.
01:42
So we can apply a default tolerance to those dimensions without having to edit them directly.
01:50
Another way you can apply tolerances is to specific dimensions.
01:55
Activating the sketch of the bores that hold the bearings in the hole that the shaft passes through,
02:01
you can edit any sketch dimension and from the dimension value, expand it and select tolerance.
02:10
If you've worked in the parameters dialogue box, you might recognize the four icons in the upper right.
02:16
They represent the maximum, minimum, median, and nominal value for the dimensions.
02:24
From the tolerance type, we'll select limits using fits that show the tolerance.
02:32
This will enable the selection of a specific fit to apply to that dimension.
02:38
For this model, I'll select F10.
02:43
You'll see immediately that the sketch dimension is updated showing the tolerance range for that dimension.
02:53
Now that we have some of the background complete,
02:55
let's go ahead and start out by going to the Annotation tab and starting the Tolerance Feature tool.
03:02
The first thing I'll select is the back face of the cover.
03:06
We'll use this as a primary datum.
03:09
After clicking OK, I get a preview of the tolerance frame and when I place it in the design, I'll get a dialogue in the upper right.
03:17
This will give me the same representation as well as a number of options.
03:22
I can turn off making this a datum simply applying the geometric tolerance.
03:27
But I want to keep this datum.
03:30
I can also choose the control that's being applied.
03:33
We'll leave it Flatness, but I do want to change the value to 10,000.
03:39
When I'm happy with it, I'll click the plus sign to apply.
03:43
As soon as I do this, the Tolerance Advisor pops up.
03:47
The Tolerance Advisor will give you advice and guidance on things that you might want to change or that need attention.
03:56
For example, right now, this model contains dimensions that weren't placed using these tools.
04:02
One or more of the surfaces need dimensions to constrain them.
04:06
And not all of the degrees of freedom of the part have been constrained.
04:11
Right now, we only have one datum.
04:13
That is shown in the Tolerance Advisor as well as not being referenced.
04:18
Because we don't have any dimensions or other control frames that reference this A datum, that message is appearing.
04:27
Now let's place another tolerance feature by selecting the bore that the bearing is going to set in.
04:34
You can see when we click OK, we get a preview of the dimension including the fit that was applied as well as a control frame for perpendicularity.
04:45
When I click to place this dimension again, I get the dialogue where I can make modifications.
04:52
Again, we can turn off whether or not this will be applying the B datum and set the value for the tolerance.
05:03
Then we'll hit "Apply" again.
05:05
We see that now the reference to the A not being referenced is gone.
05:10
But now there's a reference saying that the combination of A and B datums has not been referenced.
05:16
This is to be expected.
05:17
Let's continue on.
05:22
We'll select the hole that the shaft will pass through.
05:24
You'll notice that we're not automatically offered another datum.
05:29
That's because this hole is concentric and applying a datum to it probably wouldn't be of any value,
05:35
but we are getting not only a dimension but a position control that references that A B datum.
05:44
We can click the dimension value in the dialogue, set a deviational tolerance, add our values.
06:04
And when we're done, we'll just click OK.
06:08
Now, here is something interesting.
06:10
In the Tolerance Advisor, we now have a warning that the orientation tolerance must be smaller than the position.
06:18
So I'll go in and modify the position tolerance.
06:22
Give it a little bit more flexibility.
06:25
When I click OK, the warning is gone.
06:29
At any time if we want to make a modification to one of these dimensions or the tolerances,
06:34
all we have to do is a simple double click and we can go in and change, for example, to Symmetry Tolerance and give it a value.
06:46
Finally, let's add some surface texture callouts.
06:49
We'll select the back face first.
06:52
Since this is going to be machined, we'll just leave it a 125 value.
06:58
But since we'll be using a gasket, we'll do just a little bit of cross hatching on it.
07:03
So we want this surface to be judged based on the crossed surface.
07:09
Then let's apply a texture to the bore for that bearing.
07:14
This we want to be a bit smoother.
07:16
Maybe we'll hone it out and we'll make this 63.
07:22
Now that we have the basic tolerances put in place,
07:26
we're ready to start taking a look at how we want to share this information or display it for others.
07:32
That will be the next part.
