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Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:02
review dimension types
00:06
in this video will identify dimension
00:08
types and will interpret dimensional tolerances.
00:13
Infusion 3 60. Let's carry on with our 123 block drawing,
00:17
we're gonna be taking a look at the first sheet and
00:20
we want to identify detailed dimensions as well as tolerance values.
00:24
When you're looking at a detailed drawing,
00:26
it's important that you have all the information to manufacture apart.
00:30
In some cases you'll find that detailed dimensions are going to be based
00:34
on the size of the part and sometimes they'll be positional in nature.
00:38
So let's make sure that we understand what that basic concept means.
00:42
Before moving on,
00:44
you see that in this case we have a two plus or minus 20.0 to
00:51
this two or two inches is going to represent the size of the part.
00:56
It's two inches wide in this case
00:58
And the tolerance value plus or -1002
01:04
is telling us that this feature,
01:05
the size of the part can be either plus that
01:09
value or minus that value so slightly larger or slightly smaller
01:14
but this is representing
01:16
the overall size or width of the part.
01:18
The values at the top here are going to represent
01:21
a position value and sometimes you might find this information
01:25
in what's called a baseline or a chain type dimension
01:29
and sometimes you might find it as an ordinate dimension.
01:33
So for example, in this top view we have 0.375 plus or minus 0.0 to
01:40
the next one we have is 10.9375 plus or minus the same value.
01:45
If we take a look at the one at the bottom we have
01:48
the same information 10.375 point 9381.52 point oh 63 and so on.
01:56
You can see that up here we have the tolerance value applied.
01:59
Well down here we're using the universal tolerance
02:02
based on the dimension or specifically the number of decimal places.
02:07
So both of these bits of information can contain
02:10
the same thing but you might see them displayed differently
02:12
depending on any specific standard that's used for the detailed
02:15
drawing or potentially just the person that's creating the drawing.
02:19
Next.
02:20
You'll also note that we sometimes have things like leaders
02:23
and notes that are pointing to a specific feature.
02:25
In this case we have .31-6.
02:29
We have a symbol one and then we have a tap size and the fit of the threat.
02:35
So this is telling us the drill size for the whole it's going
02:38
down one inch in this case that's the total height of the block.
02:41
It could also be displayed as through all and
02:44
then it's telling you what the tap sizes 38 16
02:47
it's a coarse thread and the class or fit is three B.
02:51
So again it contains all the information.
02:54
Sometimes you'll find that even though there are multiple
02:57
tapped holes you might only see this note once.
03:00
It might also contain a times five or X5 to let you know
03:05
that there are five different holes that have the same dimension or value.
03:10
Next, let's take a look at sheet too.
03:13
And let's take a look at some of the other dimensions or values that we have.
03:16
For example we have an angular dimension here.
03:19
It's representing two specific edges. In this case it's the champ for
03:24
now you might find this as an angle in this case 45 degrees.
03:28
You might also see a leader or a note pointing to
03:31
the champ for noting that the champ for is 45 degrees.
03:35
You could also see this as a dimension value telling
03:38
you that it is a champ for that is 450.2.
03:42
Again there are many different ways that you might find this information
03:45
but in this case it's just important that we
03:47
know that we can identify different dimension types.
03:51
We want to make sure we understand or can identify
03:54
size dimension types,
03:55
positional dimension types and then additional dimension types like
03:59
tapped and threaded holes and chant for notes.
04:03
If we take a look at this drawing view,
04:05
there are a bunch of other symbols and identifying
04:08
characteristics that we will cover in a G.
04:10
And T. Video.
04:11
But the last thing that I do want to note on dimensions is
04:14
any time you find a dimension that has this box around it.
04:18
Oftentimes that represents a dimension that needs to be inspected
04:22
in this case inspecting the value of a champ for on the edge is not realistic.
04:28
But you will note that not all dimensions will be displayed the same.
04:31
So if you see a dimension that Oftentimes has a box or this bubble surrounding it,
04:37
that indicates that it is an inspection dimension,
04:39
something that you need to check after or during manufacture.
04:44
So not only identifying the different views of a detailed drawing,
04:47
but also identifying the different dimension types and how they're presented is
04:52
going to be an important step in understanding how to manufacture.
04:55
Apart.
04:56
At this point, we haven't made any changes to our detailed drawing,
04:60
so go ahead and move on to the next step.
Video transcript
00:02
review dimension types
00:06
in this video will identify dimension
00:08
types and will interpret dimensional tolerances.
00:13
Infusion 3 60. Let's carry on with our 123 block drawing,
00:17
we're gonna be taking a look at the first sheet and
00:20
we want to identify detailed dimensions as well as tolerance values.
00:24
When you're looking at a detailed drawing,
00:26
it's important that you have all the information to manufacture apart.
00:30
In some cases you'll find that detailed dimensions are going to be based
00:34
on the size of the part and sometimes they'll be positional in nature.
00:38
So let's make sure that we understand what that basic concept means.
00:42
Before moving on,
00:44
you see that in this case we have a two plus or minus 20.0 to
00:51
this two or two inches is going to represent the size of the part.
00:56
It's two inches wide in this case
00:58
And the tolerance value plus or -1002
01:04
is telling us that this feature,
01:05
the size of the part can be either plus that
01:09
value or minus that value so slightly larger or slightly smaller
01:14
but this is representing
01:16
the overall size or width of the part.
01:18
The values at the top here are going to represent
01:21
a position value and sometimes you might find this information
01:25
in what's called a baseline or a chain type dimension
01:29
and sometimes you might find it as an ordinate dimension.
01:33
So for example, in this top view we have 0.375 plus or minus 0.0 to
01:40
the next one we have is 10.9375 plus or minus the same value.
01:45
If we take a look at the one at the bottom we have
01:48
the same information 10.375 point 9381.52 point oh 63 and so on.
01:56
You can see that up here we have the tolerance value applied.
01:59
Well down here we're using the universal tolerance
02:02
based on the dimension or specifically the number of decimal places.
02:07
So both of these bits of information can contain
02:10
the same thing but you might see them displayed differently
02:12
depending on any specific standard that's used for the detailed
02:15
drawing or potentially just the person that's creating the drawing.
02:19
Next.
02:20
You'll also note that we sometimes have things like leaders
02:23
and notes that are pointing to a specific feature.
02:25
In this case we have .31-6.
02:29
We have a symbol one and then we have a tap size and the fit of the threat.
02:35
So this is telling us the drill size for the whole it's going
02:38
down one inch in this case that's the total height of the block.
02:41
It could also be displayed as through all and
02:44
then it's telling you what the tap sizes 38 16
02:47
it's a coarse thread and the class or fit is three B.
02:51
So again it contains all the information.
02:54
Sometimes you'll find that even though there are multiple
02:57
tapped holes you might only see this note once.
03:00
It might also contain a times five or X5 to let you know
03:05
that there are five different holes that have the same dimension or value.
03:10
Next, let's take a look at sheet too.
03:13
And let's take a look at some of the other dimensions or values that we have.
03:16
For example we have an angular dimension here.
03:19
It's representing two specific edges. In this case it's the champ for
03:24
now you might find this as an angle in this case 45 degrees.
03:28
You might also see a leader or a note pointing to
03:31
the champ for noting that the champ for is 45 degrees.
03:35
You could also see this as a dimension value telling
03:38
you that it is a champ for that is 450.2.
03:42
Again there are many different ways that you might find this information
03:45
but in this case it's just important that we
03:47
know that we can identify different dimension types.
03:51
We want to make sure we understand or can identify
03:54
size dimension types,
03:55
positional dimension types and then additional dimension types like
03:59
tapped and threaded holes and chant for notes.
04:03
If we take a look at this drawing view,
04:05
there are a bunch of other symbols and identifying
04:08
characteristics that we will cover in a G.
04:10
And T. Video.
04:11
But the last thing that I do want to note on dimensions is
04:14
any time you find a dimension that has this box around it.
04:18
Oftentimes that represents a dimension that needs to be inspected
04:22
in this case inspecting the value of a champ for on the edge is not realistic.
04:28
But you will note that not all dimensions will be displayed the same.
04:31
So if you see a dimension that Oftentimes has a box or this bubble surrounding it,
04:37
that indicates that it is an inspection dimension,
04:39
something that you need to check after or during manufacture.
04:44
So not only identifying the different views of a detailed drawing,
04:47
but also identifying the different dimension types and how they're presented is
04:52
going to be an important step in understanding how to manufacture.
04:55
Apart.
04:56
At this point, we haven't made any changes to our detailed drawing,
04:60
so go ahead and move on to the next step.
Step-by-step guide
How to buy
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