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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
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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
Rough Stock Removal, Profile Selection, Cut Adjustments and Smoothing.
Type:
Tutorial
Length:
7 min.
Transcript
00:10
and avoids abrupt direction changes.
00:13
This toolpath uses an advanced strategy of milling motion often referred to as high-speed machining, or HSM.
00:22
HSM involves taking a lighter width of cut, the side cut, and a longer depth of cut to create a toolpath motion that flows.
00:31
With no radical changes in direction, HSM toolpaths help to ensure smoother operations.
00:39
By default, all toolpath motion is in a climb cut rather than a conventional cut, which provides a better finish and extends tool life.
00:49
The adaptive strategy calculates arc motion blending onto and off the part, instead of making right-angle moves off the workpiece.
00:58
The result is a smooth, fluid motion that prevents the machine from jerking between moves.
01:04
This strategy reduces tool-wear and decreases the chance of tool breakage due to consistent cut volume.
01:12
You do not necessarily need a modern machine with an expensive high RPM spindle to take advantage of HSM.
01:20
Every CNC machine can benefit from an adaptive HSM toolpath motion.
01:26
In the Manufacture workspace, Milling toolbar, 2D group, select 2D Adaptive Clearing.
01:35
From the 2D Adaptive dialog, Tool tab, click Select to open the Tool Library, where you can select your cutting tool.
01:43
For this example, under Documents, selecting Intro to 2D Machining shows only the tools for this project.
01:52
Select tool 2 (½” Flat End Mill) from the list, and then click Select.
01:59
In the 2D Adaptive dialog, leave the defaults in the Feed & Speed group and switch to the Geometry tab.
02:07
You want to start by removing all the raw stock between the outside of the model and the stock block, as defined in your setup.
02:15
The tooltip for the Geometry group indicates that 2D Adaptive can handle a variety of cutting types.
02:22
Whether you need to cut a closed pocket, an open pocket, or cut the outside to leave a standing boss,
02:33
In this example, you want to start by cutting the outside to leave the standing boss.
02:39
Click Select, then select the lower edge of the model.
02:43
The chain represents the boundary limit for machining and the final depth of the cut.
02:49
You can see a blue area representing the stock to be removed.
02:54
With no other selections, Fusion assumes that the stock boundary is the outer machining boundary.
03:01
The 2D Adaptive toolpath will clear away all the stock between the outer stock boundary and the profile selection.
03:08
Next, switch to the Heights tab.
03:12
The bottom height is set in reference to the selected contour, but you want to cut past the bottom edge of the part.
03:20
Set the bottom height offset to -.030.
03:24
Switch to the Passes tab.
03:27
Here, you can select your cutting parameters.
03:31
The stepover amount is defined as an optimal load.
03:36
This is the cutting step in X and Y.
03:39
It is always best to consult your tooling supplier for the recommended load that your tooling can take, along with recommended cutting speeds.
03:48
For this example, set the Optimal Load to 0.1.
03:54
You also have the option to use an expression that represents the value as a percentage of the tool diameter.
04:01
Place your pointer over the optimal load value, click the More menu and select Edit Expression.
04:08
In the Search box, start typing “tool_diameter”.
04:14
Double-click tool_diameter in the search results to add it to the expression area.
04:20
Add a space, type “* 0.2”, and then click OK.
04:29
Now, if you change to a different tool diameter, the optimal load will still be calculated as 20% of the tool instead of a hard-coded value.
04:39
If you want to make this the default value, click the More menu again and select Save as User Default.
04:46
The next time you add a 2D Adaptive toolpath, it will use this same expression to automatically calculate the optimal load.
04:55
Confirm that the Stock to Leave box is checked.
04:59
Then, set the Radial Stock to Leave to .02 and the Axial Stock to Leave to 0.
05:06
This will leave stock on the walls, but not on the floor.
05:11
Select the checkbox next to Smoothing to remove excessive points and filter the toolpath into arcs wherever possible.
05:19
This will reduce your program size and give your toolpath a better fit.
05:25
There is nothing to change on the multi-axis or Linking tab, so click OK.
05:31
Your toolpath will start roughing the excess material from the outside of the stock.
05:37
Save your model if you want to continue working on it.
Video transcript
00:10
and avoids abrupt direction changes.
00:13
This toolpath uses an advanced strategy of milling motion often referred to as high-speed machining, or HSM.
00:22
HSM involves taking a lighter width of cut, the side cut, and a longer depth of cut to create a toolpath motion that flows.
00:31
With no radical changes in direction, HSM toolpaths help to ensure smoother operations.
00:39
By default, all toolpath motion is in a climb cut rather than a conventional cut, which provides a better finish and extends tool life.
00:49
The adaptive strategy calculates arc motion blending onto and off the part, instead of making right-angle moves off the workpiece.
00:58
The result is a smooth, fluid motion that prevents the machine from jerking between moves.
01:04
This strategy reduces tool-wear and decreases the chance of tool breakage due to consistent cut volume.
01:12
You do not necessarily need a modern machine with an expensive high RPM spindle to take advantage of HSM.
01:20
Every CNC machine can benefit from an adaptive HSM toolpath motion.
01:26
In the Manufacture workspace, Milling toolbar, 2D group, select 2D Adaptive Clearing.
01:35
From the 2D Adaptive dialog, Tool tab, click Select to open the Tool Library, where you can select your cutting tool.
01:43
For this example, under Documents, selecting Intro to 2D Machining shows only the tools for this project.
01:52
Select tool 2 (½” Flat End Mill) from the list, and then click Select.
01:59
In the 2D Adaptive dialog, leave the defaults in the Feed & Speed group and switch to the Geometry tab.
02:07
You want to start by removing all the raw stock between the outside of the model and the stock block, as defined in your setup.
02:15
The tooltip for the Geometry group indicates that 2D Adaptive can handle a variety of cutting types.
02:22
Whether you need to cut a closed pocket, an open pocket, or cut the outside to leave a standing boss,
02:33
In this example, you want to start by cutting the outside to leave the standing boss.
02:39
Click Select, then select the lower edge of the model.
02:43
The chain represents the boundary limit for machining and the final depth of the cut.
02:49
You can see a blue area representing the stock to be removed.
02:54
With no other selections, Fusion assumes that the stock boundary is the outer machining boundary.
03:01
The 2D Adaptive toolpath will clear away all the stock between the outer stock boundary and the profile selection.
03:08
Next, switch to the Heights tab.
03:12
The bottom height is set in reference to the selected contour, but you want to cut past the bottom edge of the part.
03:20
Set the bottom height offset to -.030.
03:24
Switch to the Passes tab.
03:27
Here, you can select your cutting parameters.
03:31
The stepover amount is defined as an optimal load.
03:36
This is the cutting step in X and Y.
03:39
It is always best to consult your tooling supplier for the recommended load that your tooling can take, along with recommended cutting speeds.
03:48
For this example, set the Optimal Load to 0.1.
03:54
You also have the option to use an expression that represents the value as a percentage of the tool diameter.
04:01
Place your pointer over the optimal load value, click the More menu and select Edit Expression.
04:08
In the Search box, start typing “tool_diameter”.
04:14
Double-click tool_diameter in the search results to add it to the expression area.
04:20
Add a space, type “* 0.2”, and then click OK.
04:29
Now, if you change to a different tool diameter, the optimal load will still be calculated as 20% of the tool instead of a hard-coded value.
04:39
If you want to make this the default value, click the More menu again and select Save as User Default.
04:46
The next time you add a 2D Adaptive toolpath, it will use this same expression to automatically calculate the optimal load.
04:55
Confirm that the Stock to Leave box is checked.
04:59
Then, set the Radial Stock to Leave to .02 and the Axial Stock to Leave to 0.
05:06
This will leave stock on the walls, but not on the floor.
05:11
Select the checkbox next to Smoothing to remove excessive points and filter the toolpath into arcs wherever possible.
05:19
This will reduce your program size and give your toolpath a better fit.
05:25
There is nothing to change on the multi-axis or Linking tab, so click OK.
05:31
Your toolpath will start roughing the excess material from the outside of the stock.
05:37
Save your model if you want to continue working on it.
Manufacture > Milling > 2D > 2D Adaptive Clearing
2D Adaptive Clearing is a milling process that removes the "bulk" of the stock from the raw part and roughs it into a shape that is close to the size of the model. The 2D Adaptive toolpath strategy is commonly referred to as High Speed Machining (HSM).
High Speed Machining involves taking a lighter width of cut (side cut), a longer depth of cut and creating toolpath motion that flows. There are no radical changes in direction on an HSM toolpath. As a default, all toolpath motion is in a climbing cut, rather than a conventional cut. Instead of making right angle moves off of the work piece, Fusion calculates arc motion that blends onto and off of, the part. The result is smooth fluid motion that keeps the machine from jerking between moves. This reduces tool wear and tool breakage, due to the NC paths consistent cut volume.
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