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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
Breaking sharp edges by using the 2D Chamfer toolpath.
Type:
Tutorial
Length:
5 min.
Transcript
00:03
In the process of creating a finished part, it is common for a blueprint to ask you to break all sharp edges.
00:10
However, this type of edge break is not always modeled on the CAD part.
00:15
This is where the strategy of a 2D chamfer comes in.
00:19
It is used to create a beveled edge on the machined part.
00:22
How you select the geometry and what parameters you use depends on whether the chamfer is modeled or not.
00:29
To start a 2D chamfer toolpath, from the Manufacture workspace, Milling toolbar, 2D group, click 2D Chamfer.
00:39
In the 2D Chamfer dialog, Tool tab, click Select to open the Tool Library, where you can choose your cutting tool.
00:47
For this example, under Document, click Intro to 2D Machining to show only the tools for this project.
00:55
Choose tool 4 (5/16 x 5/32 diameter 45° chamfer mill) from the list, and then click Select.
01:05
In the 2D Contour dialog, the default Speeds & Feeds for this tool are acceptable for this example,
01:11
so you can switch to the Geometry tab.
01:14
With Contour Selection active, select the outer edges of both open pockets,
01:18
then move along the outer contour, followed by the inner chains of the closed pockets.
01:23
Once done, you should have five chains in total.
01:28
Switch to the Heights tab.
01:30
Make sure that your Bottom Height is in reference from the Selected Contour(s), with an Offset value of 0.
01:37
Click the Passes tab, and set the cutter Compensation Type to Wear.
01:42
This gives the operator the flexibility to adjust the chamfer width at the machine.
01:48
The 2D chamfer toolpath can be used on parts that have a chamfer modeled or not.
01:54
For details on how to select the appropriate edge depending on your situation,
01:58
place the pointer over the Chamfer group title to see the tooltip.
02:02
In the Chamfer group, set the Chamfer Width to 10 thousandths.
02:07
The Chamfer Tip Offset, which is how much the tip is going to extend past the bottom edge of the chamfer, should be set to 25 thousandths.
02:15
The Chamfer Clearance, a distance to the edge of the tool to the side walls of the part, is set to avoid collisions at sharp corners.
02:24
Set this to 30 thousandths.
02:27
Additionally, select Smoothing.
02:31
Remember, if you have any questions about these parameters, refer to the tooltips for more information.
02:38
Next, switch to the Linking tab to set the lead-in and lead-out.
02:43
You want to approach with a more direct blend in the Leads & Transitions group.
02:48
Set the Horizontal Lead-In Radius to 40 thousandths and the Lead-In Sweep Angle to 45°.
02:56
The Linear Lead-In Distance should be set to 60 thousandths, and the Vertical Lead-In Radius to 0.
03:03
Deselect Perpendicular motion.
03:07
With these changes complete, click OK.
03:10
The 2D chamfer toolpath is created on all the sharp edges.
03:15
To observe this in simulation, in the Browser, right-click the Setup and select Simulate.
03:22
In the Simulate dialog, Display tab, deselect Tool and Toolpath, and select Stock.
03:30
From the Player controls, click Go to end of toolpath.
03:34
The chamfer is not very visible, because the model is still showing.
03:39
In the Browser, click the visibility icon to hide Models.
03:44
In the Simulate dialog, you can also use the slider to alter the Opacity of the model.
03:51
Now, the chamfer should be more visible.
03:54
Click the visibility icon again to show the model.
03:58
Click Exit Simulation to close the simulation.
04:03
Save your model if you want to continue working on it.
Video transcript
00:03
In the process of creating a finished part, it is common for a blueprint to ask you to break all sharp edges.
00:10
However, this type of edge break is not always modeled on the CAD part.
00:15
This is where the strategy of a 2D chamfer comes in.
00:19
It is used to create a beveled edge on the machined part.
00:22
How you select the geometry and what parameters you use depends on whether the chamfer is modeled or not.
00:29
To start a 2D chamfer toolpath, from the Manufacture workspace, Milling toolbar, 2D group, click 2D Chamfer.
00:39
In the 2D Chamfer dialog, Tool tab, click Select to open the Tool Library, where you can choose your cutting tool.
00:47
For this example, under Document, click Intro to 2D Machining to show only the tools for this project.
00:55
Choose tool 4 (5/16 x 5/32 diameter 45° chamfer mill) from the list, and then click Select.
01:05
In the 2D Contour dialog, the default Speeds & Feeds for this tool are acceptable for this example,
01:11
so you can switch to the Geometry tab.
01:14
With Contour Selection active, select the outer edges of both open pockets,
01:18
then move along the outer contour, followed by the inner chains of the closed pockets.
01:23
Once done, you should have five chains in total.
01:28
Switch to the Heights tab.
01:30
Make sure that your Bottom Height is in reference from the Selected Contour(s), with an Offset value of 0.
01:37
Click the Passes tab, and set the cutter Compensation Type to Wear.
01:42
This gives the operator the flexibility to adjust the chamfer width at the machine.
01:48
The 2D chamfer toolpath can be used on parts that have a chamfer modeled or not.
01:54
For details on how to select the appropriate edge depending on your situation,
01:58
place the pointer over the Chamfer group title to see the tooltip.
02:02
In the Chamfer group, set the Chamfer Width to 10 thousandths.
02:07
The Chamfer Tip Offset, which is how much the tip is going to extend past the bottom edge of the chamfer, should be set to 25 thousandths.
02:15
The Chamfer Clearance, a distance to the edge of the tool to the side walls of the part, is set to avoid collisions at sharp corners.
02:24
Set this to 30 thousandths.
02:27
Additionally, select Smoothing.
02:31
Remember, if you have any questions about these parameters, refer to the tooltips for more information.
02:38
Next, switch to the Linking tab to set the lead-in and lead-out.
02:43
You want to approach with a more direct blend in the Leads & Transitions group.
02:48
Set the Horizontal Lead-In Radius to 40 thousandths and the Lead-In Sweep Angle to 45°.
02:56
The Linear Lead-In Distance should be set to 60 thousandths, and the Vertical Lead-In Radius to 0.
03:03
Deselect Perpendicular motion.
03:07
With these changes complete, click OK.
03:10
The 2D chamfer toolpath is created on all the sharp edges.
03:15
To observe this in simulation, in the Browser, right-click the Setup and select Simulate.
03:22
In the Simulate dialog, Display tab, deselect Tool and Toolpath, and select Stock.
03:30
From the Player controls, click Go to end of toolpath.
03:34
The chamfer is not very visible, because the model is still showing.
03:39
In the Browser, click the visibility icon to hide Models.
03:44
In the Simulate dialog, you can also use the slider to alter the Opacity of the model.
03:51
Now, the chamfer should be more visible.
03:54
Click the visibility icon again to show the model.
03:58
Click Exit Simulation to close the simulation.
04:03
Save your model if you want to continue working on it.
Manufacture > Milling > 2D > 2D Chamfer
2D Chamfer creates a beveled edge on the part model. This part doesn't have a Chamfer modeled on it's edges, but sometimes 2D Chamfer is used to remove any sharp edges on a part.
The final toolpath should look like the picture below. Notice how the edge on the open pocket is not chamfered to the end. That would break the tool and damage the part. Fusion is smart enough to cut what is possible and avoid damaging toolpaths.
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