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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’ll create an external roughing toolpath.
00:06
After completing this lesson, you'll be able to: Create a profile toolpath and identify toolpath options.
00:15
For this lesson, we want to carry on with our turning CAM setup from the previous lesson.
00:19
Now we're going to take a look at creating our first operation,
00:22
and to do this, we're going to go up to Turning and we're going to be selecting Turning Profile Roughing.
00:30
This is generally not the first operation you do.
00:32
We generally start with a facing operation,
00:35
but we want to take a look at this one first as it's going to give us a great results so we can see exactly what it's doing.
00:41
So we'll start with Turning Profile Rough and what you'll notice is that we have a preview of a section through the revolved part.
00:49
So this is exactly what we're trying to machine too and we have our stock model or the outside of the part that we need to remove.
00:58
The first thing that we need to do is select a tool.
01:00
When we go into selected tool, you'll notice that this design already has four tools in it.
01:06
We have two different tool number ones.
01:08
You'll notice that there is a problem here with the tool numbering that we’ll have to handle later.
01:12
We've got an internal boring bar and then we have another tool that can be used for some finishing operations.
01:20
So for this, we're going to get started with tool number one, which is our MCLN-R.
01:26
This is a right hand turning tool. And we're going to select this.
01:29
Notice that now we have a preview on the screen.
01:31
If I go to a top view, you can see where the tool’s coming from, positive X.
01:36
The next thing that I want to note is that the Mode is set to Outside Profiling by default and this is exactly what we want to use.
01:44
Next, we're going to make sure that we leave the Tool Orientation, Clearance Back and Front exactly the same.
01:50
These are all the default values. These are going to be set to 0.
01:53
And I'm not going to modify any of the tool settings to get started and we’ll use the default presets for feeds and speeds.
02:00
Moving on to our geometry, in this instance, we're going to allow it to look between two planes, a front plane.
02:08
And this here has front -0.05 and the back is -2.05.
02:15
So these planes are based off of our part and not our stock.
02:19
We need to make sure that we understand that if we need to increase the look ahead or the amount that we're leaving on the back of the part.
02:27
So what we want to make sure that we do here is that we extend it pass the back.
02:31
So the Front is going to be set to Model Front and the Back is going to be set to Model Back.
02:37
However, we are going to make sure that we use an offset value, I'm going to add -0.2 and notice that the plane moves back -0.2.
02:47
Keep in mind however, when we look at the number on this plane, it's actually -2.25.
02:53
If you remember from our setup, that is exactly where we stuck the chuck on this,
02:58
we're only holding the back of the part with a 0.5” between the stock and the chuck and the back of our part.
03:06
So we need to make sure that we account for that so that our tool doesn't travel into the chuck.
03:11
So instead of 0.20, I'm going to reduce this 0.15.
03:16
This means that it's going to take it back to -2.2 and we should have enough clearance here.
03:22
For the next tab, we have to determine what our clearance values are going to be.
03:27
I'm going to use most of the defaults.
03:29
However, the Inner Radius instead of using the Stock ID, I'm going to use the Selection.
03:34
I'm going to grab that inside surface of that bore.
03:38
Now, the reason I'm doing this is because I want to make sure that the tool doesn't try to go all the way in to that section.
03:45
And generally it wouldn't because we're using outside profiling,
03:48
but it's always good to make sure that we are in complete control of where the tool can go and where it can't.
03:54
Next we have Passes section and I'm not really going to make any adjustments to these.
03:59
I want to take a look at the defaults first before I modify any of the parameters.
04:04
So you'll notice here that we have Stock to Leave because we're doing a roughing operation and that's fine.
04:09
We're going to make sure that we leave a small amount to come back and finish.
04:13
And when we take a look at some of the other options, even Depths of Cut is off by default, Make Sharp Corners is on by default.
04:21
And then we also have some other options that we might want to turn on. Things like No Dragging.
04:27
No Dragging is an option that will determine how the tool is going to handle some of these vertical faces.
04:34
Now the tool that we're using is actually going to be tapered and it's not going to be able to machine these walls anyways,
04:40
but I like to turn this option on if I want to prevent it from dragging up those faces.
04:46
Lastly, there is a Linking parameter section and I'm going to use all the default values for the Clearance and the Safe Z approaches.
04:53
We’re going to say OK. And we're going to go to preview of this toolpath.
04:57
When we view this from the top, what we're seeing here is the stock that we're starting with and then the material that's getting removed.
05:06
If your display looks different than mine, make sure that you are showing the in process stock.
05:13
If you don't have that displayed, what you're going to see is this sort of cross sections yellow area that is a sectioned plane of the revolved solid.
05:22
Now, either option is fine.
05:23
If you would rather see this with the part underneath it or if you'd rather see the stock, either is a great option,
05:29
just make sure that you understand which one of these you're looking at.
05:33
You can also change the transparency of that stock.
05:36
What we want to make sure that we understand is what the tool is doing and what is actually being removed.
05:42
You'll note that the material on the front is still there.
05:45
So I'm going to come to Turning, I'm going to go to Turn Facing using the same tool and all the default settings.
05:51
I'm just going to say OK and allow it to create that facing toolpath and then I'm going to drag it before my Profile Roughing.
05:59
Now, if we take a look at the preview, you see that the stock is being removed from the front first and then we're doing the Profile Roughing.
06:06
This is generally the workflow that you would want to make sure that you face the end of the part, so you know exactly where you're starting.
06:13
This also allows you to have a small amount of clearance when you're leading into the stock removal.
06:19
This is the first operation that we really wanted to explore as Profile Roughing is usually the go to,
06:25
to just get the most amount of material away from the part before you get into finishing it.
06:30
So from here, make sure that you do save the file before you move on.
06:34
And then as soon as you have it saved, make sure you move on to the next step where we'll carry on finishing this part.
Video transcript
00:02
In this lesson, we’ll create an external roughing toolpath.
00:06
After completing this lesson, you'll be able to: Create a profile toolpath and identify toolpath options.
00:15
For this lesson, we want to carry on with our turning CAM setup from the previous lesson.
00:19
Now we're going to take a look at creating our first operation,
00:22
and to do this, we're going to go up to Turning and we're going to be selecting Turning Profile Roughing.
00:30
This is generally not the first operation you do.
00:32
We generally start with a facing operation,
00:35
but we want to take a look at this one first as it's going to give us a great results so we can see exactly what it's doing.
00:41
So we'll start with Turning Profile Rough and what you'll notice is that we have a preview of a section through the revolved part.
00:49
So this is exactly what we're trying to machine too and we have our stock model or the outside of the part that we need to remove.
00:58
The first thing that we need to do is select a tool.
01:00
When we go into selected tool, you'll notice that this design already has four tools in it.
01:06
We have two different tool number ones.
01:08
You'll notice that there is a problem here with the tool numbering that we’ll have to handle later.
01:12
We've got an internal boring bar and then we have another tool that can be used for some finishing operations.
01:20
So for this, we're going to get started with tool number one, which is our MCLN-R.
01:26
This is a right hand turning tool. And we're going to select this.
01:29
Notice that now we have a preview on the screen.
01:31
If I go to a top view, you can see where the tool’s coming from, positive X.
01:36
The next thing that I want to note is that the Mode is set to Outside Profiling by default and this is exactly what we want to use.
01:44
Next, we're going to make sure that we leave the Tool Orientation, Clearance Back and Front exactly the same.
01:50
These are all the default values. These are going to be set to 0.
01:53
And I'm not going to modify any of the tool settings to get started and we’ll use the default presets for feeds and speeds.
02:00
Moving on to our geometry, in this instance, we're going to allow it to look between two planes, a front plane.
02:08
And this here has front -0.05 and the back is -2.05.
02:15
So these planes are based off of our part and not our stock.
02:19
We need to make sure that we understand that if we need to increase the look ahead or the amount that we're leaving on the back of the part.
02:27
So what we want to make sure that we do here is that we extend it pass the back.
02:31
So the Front is going to be set to Model Front and the Back is going to be set to Model Back.
02:37
However, we are going to make sure that we use an offset value, I'm going to add -0.2 and notice that the plane moves back -0.2.
02:47
Keep in mind however, when we look at the number on this plane, it's actually -2.25.
02:53
If you remember from our setup, that is exactly where we stuck the chuck on this,
02:58
we're only holding the back of the part with a 0.5” between the stock and the chuck and the back of our part.
03:06
So we need to make sure that we account for that so that our tool doesn't travel into the chuck.
03:11
So instead of 0.20, I'm going to reduce this 0.15.
03:16
This means that it's going to take it back to -2.2 and we should have enough clearance here.
03:22
For the next tab, we have to determine what our clearance values are going to be.
03:27
I'm going to use most of the defaults.
03:29
However, the Inner Radius instead of using the Stock ID, I'm going to use the Selection.
03:34
I'm going to grab that inside surface of that bore.
03:38
Now, the reason I'm doing this is because I want to make sure that the tool doesn't try to go all the way in to that section.
03:45
And generally it wouldn't because we're using outside profiling,
03:48
but it's always good to make sure that we are in complete control of where the tool can go and where it can't.
03:54
Next we have Passes section and I'm not really going to make any adjustments to these.
03:59
I want to take a look at the defaults first before I modify any of the parameters.
04:04
So you'll notice here that we have Stock to Leave because we're doing a roughing operation and that's fine.
04:09
We're going to make sure that we leave a small amount to come back and finish.
04:13
And when we take a look at some of the other options, even Depths of Cut is off by default, Make Sharp Corners is on by default.
04:21
And then we also have some other options that we might want to turn on. Things like No Dragging.
04:27
No Dragging is an option that will determine how the tool is going to handle some of these vertical faces.
04:34
Now the tool that we're using is actually going to be tapered and it's not going to be able to machine these walls anyways,
04:40
but I like to turn this option on if I want to prevent it from dragging up those faces.
04:46
Lastly, there is a Linking parameter section and I'm going to use all the default values for the Clearance and the Safe Z approaches.
04:53
We’re going to say OK. And we're going to go to preview of this toolpath.
04:57
When we view this from the top, what we're seeing here is the stock that we're starting with and then the material that's getting removed.
05:06
If your display looks different than mine, make sure that you are showing the in process stock.
05:13
If you don't have that displayed, what you're going to see is this sort of cross sections yellow area that is a sectioned plane of the revolved solid.
05:22
Now, either option is fine.
05:23
If you would rather see this with the part underneath it or if you'd rather see the stock, either is a great option,
05:29
just make sure that you understand which one of these you're looking at.
05:33
You can also change the transparency of that stock.
05:36
What we want to make sure that we understand is what the tool is doing and what is actually being removed.
05:42
You'll note that the material on the front is still there.
05:45
So I'm going to come to Turning, I'm going to go to Turn Facing using the same tool and all the default settings.
05:51
I'm just going to say OK and allow it to create that facing toolpath and then I'm going to drag it before my Profile Roughing.
05:59
Now, if we take a look at the preview, you see that the stock is being removed from the front first and then we're doing the Profile Roughing.
06:06
This is generally the workflow that you would want to make sure that you face the end of the part, so you know exactly where you're starting.
06:13
This also allows you to have a small amount of clearance when you're leading into the stock removal.
06:19
This is the first operation that we really wanted to explore as Profile Roughing is usually the go to,
06:25
to just get the most amount of material away from the part before you get into finishing it.
06:30
So from here, make sure that you do save the file before you move on.
06:34
And then as soon as you have it saved, make sure you move on to the next step where we'll carry on finishing this part.
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