& 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
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 machine internal geometry.
00:06
After completing this lesson, you'll be able to: Create an internal turning profile toolpath and modify tool orientation.
00:15
In Fusion 360, we want to carry on with turning CAM setup.
00:19
At this point, we've machine the outside with the exception of our groove.
00:23
We want to take a look at how we can machine the inside of the part.
00:26
The first thing that I want to do is I'm going to measure the diameter, and note that we have a diameter of 0.75 of an inch.
00:34
So that's not a very large hole.
00:36
And likely what you would do is you would come in with some sort of drill or mill,
00:41
to at least clear out the majority of that material before finishing.
00:46
However, in this example, we're simply going to take a look at how we can use our profile toolpaths on internal geometry,
00:52
and modify things like tool orientation.
00:55
So to get started, we're going to go to Turning and we're going to select Turning Profile Roughing.
01:01
The difference here is instead of outside, we're going to do inside profiling.
01:06
Notice that the tool instantly moves because now it assumes it's coming in from the Z direction.
01:11
So we need to change our tool.
01:14
In this instance, we're going to be using a boring bar and you'll notice in our document that one of the orientations of the tools is different.
01:22
The boring bars are going to have a different orientation, but we can also modify these as needed.
01:28
So we're going to select the boring bar and notice that it has a round section for the holder and then it has a small insert.
01:37
So while this tool is what you would use to finish off the inside of the part, there are some things that we need to be mindful of.
01:44
The width of the tool is slightly larger than the radius of the hole that we're trying to clean.
01:52
So again, this is likely something that you would come in and you would pre drill or pre bore.
01:57
But we're going to just again assume that we're going to take this tool in to do all the cleanup in here.
02:04
So if we want to modify the tool orientation from what we have here, we can use some of the tool settings.
02:11
If we enter a positive value of 10 degrees, notice that it's rotating in the positive direction about the Y axis.
02:18
If we use negative 10 degrees, it's rotating the other direction but notice that it's turning red.
02:25
If we go to a -5 degrees, notice that it's no longer red.
02:30
And the reason for this is because the insert has that 5 degree angle on it.
02:35
This means that we can't go pass that because the point of the tool that it's being used for compensation is the tip.
02:43
And if we rotate pass at 5 degrees,
02:45
that means that the insert itself is actually going to be contacting at a different point than we're actually calculating to.
02:53
So for this example I'm going to use -4 degrees, which means that I can still come in and I can drag on the face,
03:02
making sure that I'm not contacting a point I'm not expecting.
03:06
This also allows me to have a small amount of tilt or turn in the tool.
03:11
That means that I'm not using the entire side of the insert, but rather I am using the point.
03:16
Now, you can modify this value to anything that you see fit.
03:20
If we go down to -2 degrees, that will give us a little bit more leeway for example.
03:25
But again, we can't go pass the angle that's on the tip of the tool, otherwise it's going to turn red on the screen.
03:31
The next thing that we want to do is we want to come into the geometry.
03:35
Right now, it's going to go from the front to the back and I don't want the back to be all the way on the back of the part.
03:42
I want to bring this plane forward.
03:45
So that way, I'm not trying to go all the way to the back of the part looking for geometry.
03:49
I simply want to go to that face.
03:52
While that isn't strictly required, that we drag it all the way up because we don't have any internal geometry there.
03:58
If this bore went deeper than we wanted to go with this toolpath, we could use these planes to restrict that motion.
04:05
The next thing that we need to do is we need to talk about the inner and outer radii.
04:09
For right now I'm going to leave these how they are but we will come back and we will make some modifications to them,
04:14
because they will affect us when we're using these internal toolpaths.
04:18
Next in the Passes section we have Stock to Leave and I'm going to leave all these settings as default.
04:25
And lastly, I'm just going to look at the Linking parameters noting that we might potentially have some issues here,
04:32
and the issues are going to be associated with the fact that we're going to have to cross that rotation axis,
04:37
because there is solid material in the center of this part.
04:40
I also want to note that there is an Angled Entry option and we might explore that, but let's leave it off for now and say OK.
04:47
So here we can see that the tool goes in, but we do have a warning on the toolpath.
04:52
It's telling us that the clearance trimmed at the clearance radius and then it's also telling us that it crosses the rotary axis.
04:60
So these warnings are telling us something that is potentially a problem with the toolpath.
05:06
I'm going to validate this by going into my simulation and we can do that by going to Actions and up to simulate.
05:12
I'm going to take my cursor along the bottom and I'm going to manually drag this in,
05:17
and notice that it's just pushing all the way in and then it's coming back out and notice how it's moving around.
05:24
It's moving its way in and it's dragging out trying to clean the bottom of that section.
05:31
So this is not an ideal toolpath at all for us.
05:36
So we want to modify some parameters and see if we can get this to be a little bit better.
05:40
So I'm going to go into my toolpath for profile roughing.
05:44
We are doing inside, but let's go to the Passes section and let's take a look at some of the options we have.
05:51
So for Cycle, we have Horizontal, Vertical and Back Cutting.
05:56
Just like with everything in Fusion, if you hover your cursor over here, you can take a look at what each of these means.
06:01
Now Horizontal is going to be cutting from the front side to the back side.
06:07
Now it's not going to work very well for us in this instance.
06:10
The Vertical passes are going to be cutting from outside towards the centerline,
06:15
and then the Back Cutting will be starting at the back of the part and coming forward.
06:19
So I'm going to try to make a change and set this to Vertical passes, remember that this is inside, so we're going to change the direction.
06:27
We're going to go outside in and we're just going to see what we get as a result.
06:31
We can take a look at the toolpaths on the screen and see what they're doing.
06:35
But again, we can always go back and simulate to get an idea as to what's happening.
06:40
So you can see that it's moving in the wrong direction again.
06:43
Really, we want to start in the center and move our way out.
06:46
In order to do that, we need to again make some adjustments.
06:50
Probably the best way to learn what these toolpaths are doing is by changing one setting at a time.
06:55
So we're going to leave Vertical and this time we're going to go inside to outside and take a look at what's different.
07:01
Once again, we'll go to simulate and we'll just see what the tool’s doing.
07:05
So switching that around now, we're starting at the inside and we're working our way out.
07:11
So this is more of a toolpath that we would expect to see.
07:16
Again, I can't stress enough that likely we would come in and clean this out before we took a tool like this in.
07:22
But we're exploring what these toolpaths are doing.
07:25
Now, we want to talk about some of the other options that we haven't adjusted.
07:29
Grooving is not going to make any change to this toolpath because we don't have any internal grooves.
07:35
No Dragging is potentially going to have a change.
07:39
We can Use Pecking, which will have a change, it's going to determine how it's going to come in and remove material.
07:45
We also have things like Even Depths of Cut.
07:48
It's a great idea for you to explore all of these.
07:50
And what I'm going to do is I'm going to turn on the Use Pecking and I'm going to say OK and allow it to use that pecking motion.
07:58
Again, we're still going to have the warning that's telling us that we're crossing the rotary axis.
08:02
And it's also telling us that our clearance radius is not acceptable in this case.
08:07
So let's go ahead and let's just fix that clearance radius.
08:11
Right now, the clearance radius is based on the Stock ID, the Stock ID is 0.
08:18
What I want to do is I'm going to give it a value or I can manually drag it to something.
08:24
So for example, if I want to give it a selection, I can grab this and it's going to use that as a selection.
08:30
Or I can say that I want to be based on the specific radius value and in this case, it's got a radius offset of -0.4.
08:39
I can set it at -0.1.
08:42
And essentially what we're doing is we're going to create a section in the center that we want to use as sort of an avoidance region.
08:50
We don't want to go into that region.
08:53
So this clearance value again needs to be played with and adjusted as it works differently on different models.
08:59
But we're going to just modify that and we're going to take a look at a simulation of the toolpath.
09:07
So again, you can see that it still has this sort of same motion.
09:11
The tool is really just having to clear out too much material.
09:14
So this is a great candidate for something that we would bring a tool in and clear out the center with the drill or something in the middle first,
09:21
before we come and clear that’s out.
09:24
We will be talking about doing some of that drilling and potentially some C-Axis milling operations.
09:30
But right now we're not quite at those toolpaths yet,
09:33
so we want to make sure that we at least understand the difference between internal and external profile toolpaths,
09:39
what that means in terms of our setting and how some of those settings can affect what we're doing.
09:44
We will explore this internal toolpaths a little bit more in later lessons,
09:48
but for right now let's make sure that we do save this and then we can move on to the next step.
Video transcript
00:02
In this lesson, we’ll machine internal geometry.
00:06
After completing this lesson, you'll be able to: Create an internal turning profile toolpath and modify tool orientation.
00:15
In Fusion 360, we want to carry on with turning CAM setup.
00:19
At this point, we've machine the outside with the exception of our groove.
00:23
We want to take a look at how we can machine the inside of the part.
00:26
The first thing that I want to do is I'm going to measure the diameter, and note that we have a diameter of 0.75 of an inch.
00:34
So that's not a very large hole.
00:36
And likely what you would do is you would come in with some sort of drill or mill,
00:41
to at least clear out the majority of that material before finishing.
00:46
However, in this example, we're simply going to take a look at how we can use our profile toolpaths on internal geometry,
00:52
and modify things like tool orientation.
00:55
So to get started, we're going to go to Turning and we're going to select Turning Profile Roughing.
01:01
The difference here is instead of outside, we're going to do inside profiling.
01:06
Notice that the tool instantly moves because now it assumes it's coming in from the Z direction.
01:11
So we need to change our tool.
01:14
In this instance, we're going to be using a boring bar and you'll notice in our document that one of the orientations of the tools is different.
01:22
The boring bars are going to have a different orientation, but we can also modify these as needed.
01:28
So we're going to select the boring bar and notice that it has a round section for the holder and then it has a small insert.
01:37
So while this tool is what you would use to finish off the inside of the part, there are some things that we need to be mindful of.
01:44
The width of the tool is slightly larger than the radius of the hole that we're trying to clean.
01:52
So again, this is likely something that you would come in and you would pre drill or pre bore.
01:57
But we're going to just again assume that we're going to take this tool in to do all the cleanup in here.
02:04
So if we want to modify the tool orientation from what we have here, we can use some of the tool settings.
02:11
If we enter a positive value of 10 degrees, notice that it's rotating in the positive direction about the Y axis.
02:18
If we use negative 10 degrees, it's rotating the other direction but notice that it's turning red.
02:25
If we go to a -5 degrees, notice that it's no longer red.
02:30
And the reason for this is because the insert has that 5 degree angle on it.
02:35
This means that we can't go pass that because the point of the tool that it's being used for compensation is the tip.
02:43
And if we rotate pass at 5 degrees,
02:45
that means that the insert itself is actually going to be contacting at a different point than we're actually calculating to.
02:53
So for this example I'm going to use -4 degrees, which means that I can still come in and I can drag on the face,
03:02
making sure that I'm not contacting a point I'm not expecting.
03:06
This also allows me to have a small amount of tilt or turn in the tool.
03:11
That means that I'm not using the entire side of the insert, but rather I am using the point.
03:16
Now, you can modify this value to anything that you see fit.
03:20
If we go down to -2 degrees, that will give us a little bit more leeway for example.
03:25
But again, we can't go pass the angle that's on the tip of the tool, otherwise it's going to turn red on the screen.
03:31
The next thing that we want to do is we want to come into the geometry.
03:35
Right now, it's going to go from the front to the back and I don't want the back to be all the way on the back of the part.
03:42
I want to bring this plane forward.
03:45
So that way, I'm not trying to go all the way to the back of the part looking for geometry.
03:49
I simply want to go to that face.
03:52
While that isn't strictly required, that we drag it all the way up because we don't have any internal geometry there.
03:58
If this bore went deeper than we wanted to go with this toolpath, we could use these planes to restrict that motion.
04:05
The next thing that we need to do is we need to talk about the inner and outer radii.
04:09
For right now I'm going to leave these how they are but we will come back and we will make some modifications to them,
04:14
because they will affect us when we're using these internal toolpaths.
04:18
Next in the Passes section we have Stock to Leave and I'm going to leave all these settings as default.
04:25
And lastly, I'm just going to look at the Linking parameters noting that we might potentially have some issues here,
04:32
and the issues are going to be associated with the fact that we're going to have to cross that rotation axis,
04:37
because there is solid material in the center of this part.
04:40
I also want to note that there is an Angled Entry option and we might explore that, but let's leave it off for now and say OK.
04:47
So here we can see that the tool goes in, but we do have a warning on the toolpath.
04:52
It's telling us that the clearance trimmed at the clearance radius and then it's also telling us that it crosses the rotary axis.
04:60
So these warnings are telling us something that is potentially a problem with the toolpath.
05:06
I'm going to validate this by going into my simulation and we can do that by going to Actions and up to simulate.
05:12
I'm going to take my cursor along the bottom and I'm going to manually drag this in,
05:17
and notice that it's just pushing all the way in and then it's coming back out and notice how it's moving around.
05:24
It's moving its way in and it's dragging out trying to clean the bottom of that section.
05:31
So this is not an ideal toolpath at all for us.
05:36
So we want to modify some parameters and see if we can get this to be a little bit better.
05:40
So I'm going to go into my toolpath for profile roughing.
05:44
We are doing inside, but let's go to the Passes section and let's take a look at some of the options we have.
05:51
So for Cycle, we have Horizontal, Vertical and Back Cutting.
05:56
Just like with everything in Fusion, if you hover your cursor over here, you can take a look at what each of these means.
06:01
Now Horizontal is going to be cutting from the front side to the back side.
06:07
Now it's not going to work very well for us in this instance.
06:10
The Vertical passes are going to be cutting from outside towards the centerline,
06:15
and then the Back Cutting will be starting at the back of the part and coming forward.
06:19
So I'm going to try to make a change and set this to Vertical passes, remember that this is inside, so we're going to change the direction.
06:27
We're going to go outside in and we're just going to see what we get as a result.
06:31
We can take a look at the toolpaths on the screen and see what they're doing.
06:35
But again, we can always go back and simulate to get an idea as to what's happening.
06:40
So you can see that it's moving in the wrong direction again.
06:43
Really, we want to start in the center and move our way out.
06:46
In order to do that, we need to again make some adjustments.
06:50
Probably the best way to learn what these toolpaths are doing is by changing one setting at a time.
06:55
So we're going to leave Vertical and this time we're going to go inside to outside and take a look at what's different.
07:01
Once again, we'll go to simulate and we'll just see what the tool’s doing.
07:05
So switching that around now, we're starting at the inside and we're working our way out.
07:11
So this is more of a toolpath that we would expect to see.
07:16
Again, I can't stress enough that likely we would come in and clean this out before we took a tool like this in.
07:22
But we're exploring what these toolpaths are doing.
07:25
Now, we want to talk about some of the other options that we haven't adjusted.
07:29
Grooving is not going to make any change to this toolpath because we don't have any internal grooves.
07:35
No Dragging is potentially going to have a change.
07:39
We can Use Pecking, which will have a change, it's going to determine how it's going to come in and remove material.
07:45
We also have things like Even Depths of Cut.
07:48
It's a great idea for you to explore all of these.
07:50
And what I'm going to do is I'm going to turn on the Use Pecking and I'm going to say OK and allow it to use that pecking motion.
07:58
Again, we're still going to have the warning that's telling us that we're crossing the rotary axis.
08:02
And it's also telling us that our clearance radius is not acceptable in this case.
08:07
So let's go ahead and let's just fix that clearance radius.
08:11
Right now, the clearance radius is based on the Stock ID, the Stock ID is 0.
08:18
What I want to do is I'm going to give it a value or I can manually drag it to something.
08:24
So for example, if I want to give it a selection, I can grab this and it's going to use that as a selection.
08:30
Or I can say that I want to be based on the specific radius value and in this case, it's got a radius offset of -0.4.
08:39
I can set it at -0.1.
08:42
And essentially what we're doing is we're going to create a section in the center that we want to use as sort of an avoidance region.
08:50
We don't want to go into that region.
08:53
So this clearance value again needs to be played with and adjusted as it works differently on different models.
08:59
But we're going to just modify that and we're going to take a look at a simulation of the toolpath.
09:07
So again, you can see that it still has this sort of same motion.
09:11
The tool is really just having to clear out too much material.
09:14
So this is a great candidate for something that we would bring a tool in and clear out the center with the drill or something in the middle first,
09:21
before we come and clear that’s out.
09:24
We will be talking about doing some of that drilling and potentially some C-Axis milling operations.
09:30
But right now we're not quite at those toolpaths yet,
09:33
so we want to make sure that we at least understand the difference between internal and external profile toolpaths,
09:39
what that means in terms of our setting and how some of those settings can affect what we're doing.
09:44
We will explore this internal toolpaths a little bit more in later lessons,
09:48
but for right now let's make sure that we do save this and then we can move on to the next step.
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