Two sided 3D machining efficiency tips wanted

[Manus_R]

Hi There,

I’m fairly new to two sided 3D machining and have some questions. Let me first give some context:


I have draw a 3D object in Fusion that I want to machine using Aspire. This is the object:

In Aspire 12.009 (latest version) I took the following steps:


1. Job Setup:
• Set to double sided job
• Set material height and width to have some extra room for the 3D model
• Set material Thickness to 22mm. This is the same hight as the 3D Model.
• Generic input for the rest of the settings

2. Importing 3D model / Transform:
• Object position: Centre model
• Generic input for the rest of the settings

3. Importing 3D model / Position:
• Selected: Create both sides
• Undercut distance set to 11mm
• Generic input for the rest of the settings

4. Check if level plain indeed says -11

5. Check if material setup is ok

6. Make toolpaths:
• Generic roughing tool path
• Generic Finishing tool path

7. Render previews of tool paths

I’m quite pleased with the rendered result as I see this resembles the 3D model I have drawn in Fusion quite closely. I need to do some manual labour at the locations where the bit cannot come (labelled red) but the result looks very promising.

However, I feel the machine times could be much shorter. The roughing pass is removing all the material that exceeds boundaries of the 3D model. You can see this in the picture below:

If I somehow could tell Aspire to make a “3D profile toolpath” along the exterior of the 3 model instead of having it remove all the material around the 3D model this would save me a lot of time. Is something like this possible in Aspire?

The finishing pass is even worse than the roughing pass because Aspire wants to machine the top of the 3 model even though this plain is at exactly the same location as the material edge!?

I’ve played around with the height settings of both the material and the 3D model but did not manage to get rid of the problem.

Hope someone can help me make this project more efficiënt !?

Thank you in advance.

Manuel Rodrigues

[adze_cnc]

If I was to do this I'd treat it as a 2D / 3D hybrid job.

The 2D portion would need a curve (Vectric calls it vectors) of the complete plan view profile including the little flat bits for the slopes (the boundary pointed to by the blue arrows in the image below).

The 3D portion would be limited to the sloped areas. For that I would need the curves pointed to by the orange arrows.

The 3D Finishing toolpath could use the "Selected Vector" option and the selected vectors would be the sloped curves.

You could machine face one's 3D areas first .Then flip to face two and machine its 3D areas followed by a 2D profile toolpath to cut everything free.
 

[garylmast]

Check the Boundary Offset. That's the distance it will cut pass the model. Provided you have a negative plain, to hold the model in place when using the Boundary Offset, you should use Tabs, located under clipart.

Gary

[Manus_R]

Thank you for your input.

At the moment i'm considering buying a custom v-bit tool to make the part.

If I succeed in realizing the project ill report back on how i managed this.

Again, thank you.

M

[adze_cnc]

...v-bit tool to make the part.

Remember that with a v-bit you will not get the corners pointed to by the yellow arrows "sharp". They will be "rounded".