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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
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:02
In this lesson, we will create a 3D adaptive clearing operation.
00:07
After completing this lesson, you'll be able to create a 3D adaptive toolpath,
00:12
create an expression for toolpath parameters and explain the use case for expressions.
00:19
In Fusion 360, we want to carry on with our multi-axis positioning design.
00:24
Now that we have our tool library loaded and are setup created.
00:28
We're going to start by creating our first operation.
00:31
The first operation we're going to explore has nothing to do with multi-axis but often times when we're creating a multi-axis operation,
00:38
we first need to clear the part as efficiently as possible.
00:42
We're going to do this by going to 3D and selecting adaptive clearing.
00:46
The first thing that we want to do is select a tool.
00:49
We're going to navigate to our multi-axis tool library, and we want to make sure that we select tool number seven.
00:56
This is going to be a half-inch flat end mill that we're going to be using for roughing.
01:00
Will select the tool, and then we want to take a look at the geometry.
01:05
Notice that this tool only has a single preset in terms of its feeds and speeds.
01:11
We're not going to be talking about feeds and speeds just yet but note that if you're using a tool from one of the sample libraries,
01:17
you want to be sure that you're using the correct preset.
01:20
A lot of them will have presets for things like slotting or adaptive roughing or clearing,
01:26
and you want to make sure that you do have the correct one as the feeds and speeds and specific settings will be critical.
01:33
For us, we're going to move on to geometry and by default,
01:36
it's going to have stock contour which will automatically take the silhouette of the outside shape of our stock,
01:42
and it will have rest machining turned on.
01:45
We're not going to be using rest machining because this is our first operation but we do want to use the stock contour.
01:52
Next, we want to go to our heights.
01:54
If we take a look at this from the front or the right, notice that it's cutting just to the bottom of our part.
02:01
The bottom of our part is not quite where we want to cut to.
02:04
If we expand our models and we show our stock component, notice how far down the stock comes below that part.
02:11
We want to allow it to machine a little bit lower and as I start to pull this plane down,
02:16
notice that we want to go all the way below the bottom of our stock but not so far that we're going to be interacting with any of our fixture.
02:24
As we drag this down, the model bottom of -.3 inches below the part is going to be exactly where we want to go.
02:32
Note that if we were to use, for instance, the stock bottom,
02:36
it's going to go below the bottom of the stock, which is already nested inside of our fixture.
02:41
That's not what we want.
02:42
In this case, we're going to go -.3 below the bottom of our part or our model.
02:49
In the past this section, we want to make sure that we are leaving stock because this is not a finishing operation.
02:55
There's also many other things that we can modify in here, such as the optimal low because we are dealing with an adaptive operation.
03:03
It is important to remember when we're creating these operations that are 3D operations in general are going to be model aware.
03:11
That's why we can use things like a containment boundary or the stock contours and allow it to simply look for geometry machine.
03:19
When we're using a 2D adaptive clearing, we need to select a contour or a chain.
03:24
So in this case having a model aware operation with the minimal number of selections is going to be the most adaptive type of toolpath,
03:32
not only in the tool motion but in its ability to update based on model changes.
03:37
Some things that we want to look at are going to be areas such as the maximum roughing stepdown.
03:43
Now this maximum roughing stepdown comes in at .3937 and some additional decimal places.
03:50
This is based on what's called an expression.
03:53
Yeah, if we hover over this, you'll notice that it says maximum roughing stepdown and you also notice in the dialogue.
04:00
I now can see what that expression is.
04:03
You can do this by holding down the shift key and then hover over the dialogue box.
04:08
This works for any of the dialog boxes that have these expression values.
04:13
So you'll notice here that the fine stepdown is .039, and this is the default value.
04:18
This is based on the tool diameter and a maximum stepdown value that's associated with that tool.
04:25
We can obviously manually change these values.
04:28
For example, if I want this to be .3125, I can simply manually enter that,
04:33
and then it's going to adjust the fine stepdown because it's based on that maximum rough.
04:38
However, if we want to modify this a bit farther, we can right click and select edit expression.
04:44
Right now it's based on that manual value that .3125 that I entered.
04:50
However, if we want it to be based on something else, for example, I can start typing tool.
04:56
And as I start typing that, I have a list of values that I can use.
04:60
As we take a look at this, you can see that we have tool length offset, shaft diameter,
05:05
and as we go down, there are all kinds of different operational values that we can grab.
05:11
In this case, I'm going to grab the tool flute diameter, so I need to scroll down until I find the exact value that I want.
05:20
You notice that there are quite a few of these values, so it might take quite a while unless you know exactly the one that we're looking for.
05:28
If you have a good idea, we can always keep typing.
05:31
And you notice that as I start to type that D, it shows me diameter, diameter offset and description.
05:37
So I'm going to use the tool diameter, which in my case is half inch.
05:41
And if I want to use some sort of mathematical operator, I can say divide that by a quarter inch and hit Enter,
05:49
then I'll say okay, and notice that it's giving me a value right now of two inches.
05:55
So obviously that value doesn't work.
05:58
So it's going to come up as a red number because it's too much for the maximum stepdown of that tool.
06:05
So when we're using these expressions, it is important to understand exactly what values we need.
06:12
So in this case, instead of dividing by quarter inch, I want to multiply by a quarter inch.
06:17
When I do that, you'll notice it converts it 2.125 which is now a usable number.
06:22
So it's no longer red.
06:24
If you use expressions all the time, you can always set them to the default value for these dialog boxes for this operation.
06:31
We can also reset it to the default value or if you set a default value as an expression, you can reset to the default value that's built into fusion.
06:42
For the purposes of this lesson, I'm simply going to manually enter that .3125 value and say okay.
06:50
Once we enter that, you'll see a percentage inside of the browser for calculating that operation.
06:56
One thing you'll notice is that we have a lot of these very small steps, and this is one of the great benefits of using these adaptive operations.
07:04
They have the ability to take a large stepdown, and then these smaller step-up values to get closer to those rounded contours.
07:12
This makes a very efficient operation, not even considering the fact that it's a consistent tool load,
07:18
but the fact that it can stepdown those large amounts and then step up a smaller value.
07:23
From here, now that we have our first operation are 3D adaptive.
07:27
I'm going to save the design and then move on to my next step.
08:13
Some things that we want to look at are options like the maximum roughing stepdown.
08:19
Now the maximum roughing stepdown comes in by default at .393 and some change.
Video transcript
00:02
In this lesson, we will create a 3D adaptive clearing operation.
00:07
After completing this lesson, you'll be able to create a 3D adaptive toolpath,
00:12
create an expression for toolpath parameters and explain the use case for expressions.
00:19
In Fusion 360, we want to carry on with our multi-axis positioning design.
00:24
Now that we have our tool library loaded and are setup created.
00:28
We're going to start by creating our first operation.
00:31
The first operation we're going to explore has nothing to do with multi-axis but often times when we're creating a multi-axis operation,
00:38
we first need to clear the part as efficiently as possible.
00:42
We're going to do this by going to 3D and selecting adaptive clearing.
00:46
The first thing that we want to do is select a tool.
00:49
We're going to navigate to our multi-axis tool library, and we want to make sure that we select tool number seven.
00:56
This is going to be a half-inch flat end mill that we're going to be using for roughing.
01:00
Will select the tool, and then we want to take a look at the geometry.
01:05
Notice that this tool only has a single preset in terms of its feeds and speeds.
01:11
We're not going to be talking about feeds and speeds just yet but note that if you're using a tool from one of the sample libraries,
01:17
you want to be sure that you're using the correct preset.
01:20
A lot of them will have presets for things like slotting or adaptive roughing or clearing,
01:26
and you want to make sure that you do have the correct one as the feeds and speeds and specific settings will be critical.
01:33
For us, we're going to move on to geometry and by default,
01:36
it's going to have stock contour which will automatically take the silhouette of the outside shape of our stock,
01:42
and it will have rest machining turned on.
01:45
We're not going to be using rest machining because this is our first operation but we do want to use the stock contour.
01:52
Next, we want to go to our heights.
01:54
If we take a look at this from the front or the right, notice that it's cutting just to the bottom of our part.
02:01
The bottom of our part is not quite where we want to cut to.
02:04
If we expand our models and we show our stock component, notice how far down the stock comes below that part.
02:11
We want to allow it to machine a little bit lower and as I start to pull this plane down,
02:16
notice that we want to go all the way below the bottom of our stock but not so far that we're going to be interacting with any of our fixture.
02:24
As we drag this down, the model bottom of -.3 inches below the part is going to be exactly where we want to go.
02:32
Note that if we were to use, for instance, the stock bottom,
02:36
it's going to go below the bottom of the stock, which is already nested inside of our fixture.
02:41
That's not what we want.
02:42
In this case, we're going to go -.3 below the bottom of our part or our model.
02:49
In the past this section, we want to make sure that we are leaving stock because this is not a finishing operation.
02:55
There's also many other things that we can modify in here, such as the optimal low because we are dealing with an adaptive operation.
03:03
It is important to remember when we're creating these operations that are 3D operations in general are going to be model aware.
03:11
That's why we can use things like a containment boundary or the stock contours and allow it to simply look for geometry machine.
03:19
When we're using a 2D adaptive clearing, we need to select a contour or a chain.
03:24
So in this case having a model aware operation with the minimal number of selections is going to be the most adaptive type of toolpath,
03:32
not only in the tool motion but in its ability to update based on model changes.
03:37
Some things that we want to look at are going to be areas such as the maximum roughing stepdown.
03:43
Now this maximum roughing stepdown comes in at .3937 and some additional decimal places.
03:50
This is based on what's called an expression.
03:53
Yeah, if we hover over this, you'll notice that it says maximum roughing stepdown and you also notice in the dialogue.
04:00
I now can see what that expression is.
04:03
You can do this by holding down the shift key and then hover over the dialogue box.
04:08
This works for any of the dialog boxes that have these expression values.
04:13
So you'll notice here that the fine stepdown is .039, and this is the default value.
04:18
This is based on the tool diameter and a maximum stepdown value that's associated with that tool.
04:25
We can obviously manually change these values.
04:28
For example, if I want this to be .3125, I can simply manually enter that,
04:33
and then it's going to adjust the fine stepdown because it's based on that maximum rough.
04:38
However, if we want to modify this a bit farther, we can right click and select edit expression.
04:44
Right now it's based on that manual value that .3125 that I entered.
04:50
However, if we want it to be based on something else, for example, I can start typing tool.
04:56
And as I start typing that, I have a list of values that I can use.
04:60
As we take a look at this, you can see that we have tool length offset, shaft diameter,
05:05
and as we go down, there are all kinds of different operational values that we can grab.
05:11
In this case, I'm going to grab the tool flute diameter, so I need to scroll down until I find the exact value that I want.
05:20
You notice that there are quite a few of these values, so it might take quite a while unless you know exactly the one that we're looking for.
05:28
If you have a good idea, we can always keep typing.
05:31
And you notice that as I start to type that D, it shows me diameter, diameter offset and description.
05:37
So I'm going to use the tool diameter, which in my case is half inch.
05:41
And if I want to use some sort of mathematical operator, I can say divide that by a quarter inch and hit Enter,
05:49
then I'll say okay, and notice that it's giving me a value right now of two inches.
05:55
So obviously that value doesn't work.
05:58
So it's going to come up as a red number because it's too much for the maximum stepdown of that tool.
06:05
So when we're using these expressions, it is important to understand exactly what values we need.
06:12
So in this case, instead of dividing by quarter inch, I want to multiply by a quarter inch.
06:17
When I do that, you'll notice it converts it 2.125 which is now a usable number.
06:22
So it's no longer red.
06:24
If you use expressions all the time, you can always set them to the default value for these dialog boxes for this operation.
06:31
We can also reset it to the default value or if you set a default value as an expression, you can reset to the default value that's built into fusion.
06:42
For the purposes of this lesson, I'm simply going to manually enter that .3125 value and say okay.
06:50
Once we enter that, you'll see a percentage inside of the browser for calculating that operation.
06:56
One thing you'll notice is that we have a lot of these very small steps, and this is one of the great benefits of using these adaptive operations.
07:04
They have the ability to take a large stepdown, and then these smaller step-up values to get closer to those rounded contours.
07:12
This makes a very efficient operation, not even considering the fact that it's a consistent tool load,
07:18
but the fact that it can stepdown those large amounts and then step up a smaller value.
07:23
From here, now that we have our first operation are 3D adaptive.
07:27
I'm going to save the design and then move on to my next step.
08:13
Some things that we want to look at are options like the maximum roughing stepdown.
08:19
Now the maximum roughing stepdown comes in by default at .393 and some change.
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