Transcript
00:02
In this video, will create a 2D contour toolpath.
00:06
After completing this step, you'll be able to create a 2D contour toolpath.
00:11
Use multiple finishing passes, add roughing passes and add multiple depths.
00:17
In fusion 360, we want to carry on with our gear housing for CNC mill.
00:22
Now that we've created a facing toolpath, we're going to create a roughing operation for the outside of the part.
00:28
From an earlier video, we talked about the fact that we're using these drilled and tapped holes to hold the part still,
00:35
and we're going to machine all the critical geometry from the other side.
00:38
But because we have the opportunity to remove the outside stock,
00:43
we're going to go ahead and machine some of the material away, which will make it easier to finish later on.
00:49
Some considerations have to be taken for how much stock is actually held in a vise.
00:54
So at this point let's take a second to use inspect and measure and see that the overall height of our part is 0.315.
01:03
So I'm only going to go down a quarter inch, which again, we had stock on top of this part,
01:09
so that'll leave enough material on the bottom to be held in a vice and then normally flip it over and we do our roughing in our finishing passes.
01:16
We won't have as much stock to remove.
01:19
So we're going to get started by going to 2D. And selecting 2D contour.
01:24
We need to change the tool and again we're going to go to our cam DFM library and we're going to select tool number six which is our half inch flat.
01:32
We're going to select this and we want to make sure that we are using the aluminum roughing preset.
01:38
In the second tab, we want to select our geometry and this is going to be the bottom outside contour of our part.
01:44
You can see a red arrow indicating the side of the cut and the direction.
01:49
We can turn on various options such as tabs. If we need to leave tabs that can be used to be held in a vice and cut out manually.
01:56
Later, this could be a great option if your machining everything from one side and you have to hold it into a vice.
02:03
The second thing we can do is turn on rest machining.
02:07
If we've helped apart and we've machined some of the geometry away and we want to account for that.
02:13
We can use this option but in our case we've only faced the top and it's not going to do anything for us.
02:18
We also have a wrap toolpath which can be used to unwrap the toolpath for something like a simultaneous for axis operation.
02:27
Again that doesn't apply to us.
02:28
So we're going to leave all of those settings that stock for the heights,
02:32
notice that it's starting from the top of the stock and then it's going to the selected contour.
02:38
Well we don't want to go all the way to the bottom.
02:40
So we need to make sure that we identify exactly how far we want to go down.
02:45
If we know where the bottom contour is or the bottom of the stock is.
02:50
For example, if we go to stock bottom, we can then add a positive value because Z is pointing up,
02:58
we can enter a positive value for the amount we want in advice plus a little bit of clearance.
03:03
If we're going to be holding this in a vise with a quarter inch of material and we want to add a little bit too that we can simply say .26 inches.
03:14
Now again, it depends on what your clearances are and this is really just an exercise of understanding our settings.
03:20
But note that that positive value allow that plane to come up.
03:24
If we go to a bottom view, you can see how much material or machining off and how much material we're leaving behind.
03:30
If that was a smaller value, say .125, you can see that plane goes down and you can see exactly how much material is being helped.
03:38
For our example, I'm going to go somewhere in the middle at .2, which leaves me enough material in the vice, but also allows me to remove enough.
03:47
That is actually saving me sometime when we flip it over.
03:50
Next, in the past is section, we need to talk about stock to leave roughing passes and multiple depths.
03:57
We're going to talk about them in order of the operation. So first, we're going to turn on roughing passes.
04:03
This allows us to use roughing passes, cutting from the outside of the part in.
04:08
This essentially will take the profile that we have selected and create offsets in X and Y.
04:15
We're going to have to step overs at an eighth of an inch and then we're going to talk about multiple depths.
04:21
Multiple depths allows us to make different Z cuts each time we go down and I'm going to set that at
04:29
we can have a finishing step down but in this case we're not creating a finishing toolpath.
04:34
So I don't need to worry about a small step down at the very bottom.
04:37
I do however, want to leave stock when we talk about stock, there are two directions, the radial direction and the axial direction.
04:46
The axial direction is going to be Z, or how deep the tool is going. And here we don't need to leave any stock.
04:52
However, in the radial direction we do want to leave stock on the wall,
04:56
because again, we're flipping this part over and we're machining it from the other side.
04:60
So I'm going to leave .05.
05:03
We're going to say okay, and allow it to create our toolpaths,
05:07
notice here that it creates a toolpath, but it leaves a small amount of material in this corner,
05:12
and that can be problematic when we flip it over and we have a warning on our toolpath,
05:17
notice that a contour is not machine because the given parameters would cause a collision.
05:22
So let's go ahead and modify our parameters and see if we can handle that warning.
05:27
We're going to first edit this, we're going to go into geometry and we're going to turn on stock contours,
05:33
without making any other changes, let's say, okay and take a look at the results.
05:37
Now, you can see it's able to take into account the amount of stock that's left,
05:43
and it's making those smaller cuts in the corners and it's creating the geometry that we need.
05:48
However, we're not quite done yet.
05:51
When we're turning on stock contours, it helps because it's not creating the full outside profile all the way over here.
05:57
However, we are leaving some material and that can be problematic for us.
06:02
So let's go back in let's make some additional adjustments to our roughing passes. But I'm going to turn off multiple depths.
06:11
We're using a half inch in Milan aluminum and we will be able to cut this deep on this part,
06:17
especially if we're mindful of all our other settings.
06:20
With our roughing passes, I'm using a maximum step over of an eighth of an inch or a quarter of our tool.
06:26
I'm going to increase the number of stepovers 23 and see if that allows us to get everything off the corner. It looks like it does.
06:33
And again, because we use stock contours, we're not wasting a lot of time with the tool outside,
06:39
and we are able to get everything off of those corners as well as remove a little bit of material from the ends.
06:45
So that looks like a pretty good result. We no longer have the warning.
06:49
And again, we can always go back to our name views and use part up1 ISO,
06:53
so that we created if we want to go back to the isometric view of our part, not necessarily how it was modeled.
07:01
I'm going to left click in the canvas and I'm going to save this design before moving on to the next step.
00:02
In this video, will create a 2D contour toolpath.
00:06
After completing this step, you'll be able to create a 2D contour toolpath.
00:11
Use multiple finishing passes, add roughing passes and add multiple depths.
00:17
In fusion 360, we want to carry on with our gear housing for CNC mill.
00:22
Now that we've created a facing toolpath, we're going to create a roughing operation for the outside of the part.
00:28
From an earlier video, we talked about the fact that we're using these drilled and tapped holes to hold the part still,
00:35
and we're going to machine all the critical geometry from the other side.
00:38
But because we have the opportunity to remove the outside stock,
00:43
we're going to go ahead and machine some of the material away, which will make it easier to finish later on.
00:49
Some considerations have to be taken for how much stock is actually held in a vise.
00:54
So at this point let's take a second to use inspect and measure and see that the overall height of our part is 0.315.
01:03
So I'm only going to go down a quarter inch, which again, we had stock on top of this part,
01:09
so that'll leave enough material on the bottom to be held in a vice and then normally flip it over and we do our roughing in our finishing passes.
01:16
We won't have as much stock to remove.
01:19
So we're going to get started by going to 2D. And selecting 2D contour.
01:24
We need to change the tool and again we're going to go to our cam DFM library and we're going to select tool number six which is our half inch flat.
01:32
We're going to select this and we want to make sure that we are using the aluminum roughing preset.
01:38
In the second tab, we want to select our geometry and this is going to be the bottom outside contour of our part.
01:44
You can see a red arrow indicating the side of the cut and the direction.
01:49
We can turn on various options such as tabs. If we need to leave tabs that can be used to be held in a vice and cut out manually.
01:56
Later, this could be a great option if your machining everything from one side and you have to hold it into a vice.
02:03
The second thing we can do is turn on rest machining.
02:07
If we've helped apart and we've machined some of the geometry away and we want to account for that.
02:13
We can use this option but in our case we've only faced the top and it's not going to do anything for us.
02:18
We also have a wrap toolpath which can be used to unwrap the toolpath for something like a simultaneous for axis operation.
02:27
Again that doesn't apply to us.
02:28
So we're going to leave all of those settings that stock for the heights,
02:32
notice that it's starting from the top of the stock and then it's going to the selected contour.
02:38
Well we don't want to go all the way to the bottom.
02:40
So we need to make sure that we identify exactly how far we want to go down.
02:45
If we know where the bottom contour is or the bottom of the stock is.
02:50
For example, if we go to stock bottom, we can then add a positive value because Z is pointing up,
02:58
we can enter a positive value for the amount we want in advice plus a little bit of clearance.
03:03
If we're going to be holding this in a vise with a quarter inch of material and we want to add a little bit too that we can simply say .26 inches.
03:14
Now again, it depends on what your clearances are and this is really just an exercise of understanding our settings.
03:20
But note that that positive value allow that plane to come up.
03:24
If we go to a bottom view, you can see how much material or machining off and how much material we're leaving behind.
03:30
If that was a smaller value, say .125, you can see that plane goes down and you can see exactly how much material is being helped.
03:38
For our example, I'm going to go somewhere in the middle at .2, which leaves me enough material in the vice, but also allows me to remove enough.
03:47
That is actually saving me sometime when we flip it over.
03:50
Next, in the past is section, we need to talk about stock to leave roughing passes and multiple depths.
03:57
We're going to talk about them in order of the operation. So first, we're going to turn on roughing passes.
04:03
This allows us to use roughing passes, cutting from the outside of the part in.
04:08
This essentially will take the profile that we have selected and create offsets in X and Y.
04:15
We're going to have to step overs at an eighth of an inch and then we're going to talk about multiple depths.
04:21
Multiple depths allows us to make different Z cuts each time we go down and I'm going to set that at
04:29
we can have a finishing step down but in this case we're not creating a finishing toolpath.
04:34
So I don't need to worry about a small step down at the very bottom.
04:37
I do however, want to leave stock when we talk about stock, there are two directions, the radial direction and the axial direction.
04:46
The axial direction is going to be Z, or how deep the tool is going. And here we don't need to leave any stock.
04:52
However, in the radial direction we do want to leave stock on the wall,
04:56
because again, we're flipping this part over and we're machining it from the other side.
04:60
So I'm going to leave .05.
05:03
We're going to say okay, and allow it to create our toolpaths,
05:07
notice here that it creates a toolpath, but it leaves a small amount of material in this corner,
05:12
and that can be problematic when we flip it over and we have a warning on our toolpath,
05:17
notice that a contour is not machine because the given parameters would cause a collision.
05:22
So let's go ahead and modify our parameters and see if we can handle that warning.
05:27
We're going to first edit this, we're going to go into geometry and we're going to turn on stock contours,
05:33
without making any other changes, let's say, okay and take a look at the results.
05:37
Now, you can see it's able to take into account the amount of stock that's left,
05:43
and it's making those smaller cuts in the corners and it's creating the geometry that we need.
05:48
However, we're not quite done yet.
05:51
When we're turning on stock contours, it helps because it's not creating the full outside profile all the way over here.
05:57
However, we are leaving some material and that can be problematic for us.
06:02
So let's go back in let's make some additional adjustments to our roughing passes. But I'm going to turn off multiple depths.
06:11
We're using a half inch in Milan aluminum and we will be able to cut this deep on this part,
06:17
especially if we're mindful of all our other settings.
06:20
With our roughing passes, I'm using a maximum step over of an eighth of an inch or a quarter of our tool.
06:26
I'm going to increase the number of stepovers 23 and see if that allows us to get everything off the corner. It looks like it does.
06:33
And again, because we use stock contours, we're not wasting a lot of time with the tool outside,
06:39
and we are able to get everything off of those corners as well as remove a little bit of material from the ends.
06:45
So that looks like a pretty good result. We no longer have the warning.
06:49
And again, we can always go back to our name views and use part up1 ISO,
06:53
so that we created if we want to go back to the isometric view of our part, not necessarily how it was modeled.
07:01
I'm going to left click in the canvas and I'm going to save this design before moving on to the next step.
Step-by-steps
