V-Bit techniques - How would you cut this part?

[chmed]

Working in wood with a CNC router.  90 degree miter fold insert bit (Amana RC-1102).  I recognize that part of my trouble is that the CAM in fusion comes from and still is primarily aimed at machining metals, which often require different techniques.  But there's got to be some easier ways to do this.  Attached is an image of an example part.  45 degree bevel around the perimeter.  Some vertical holes in the flat face as well as in the bevel.  The vertical holes aren't a problem using basic end mills.  But finding ways to use the 90 degree bit has been challenging.  

At this point I have the tool in the library as a tapered mill with the diameter set to .002".  This makes a bit that actually looks a bit like what I have.  My earlier experiments with it as a chamfer bit appeared to be far less fruitful as many operations would reject it telling me that the tool is not suitable.  

3D contours will sometimes create something useful looking but often take VERY long to generate and usually have extra operations (like removing some material from the top of the stock which is not necessary) that don't make sense and are not efficient.  It would seem that I could do a simple machine along path type of thing except for that open hole that creates a bite (like an alley cat ear) in the circular path that I need.  

Any suggestions about how to approach this?  

[pmesten18]

I am sure you can use you V bit cutter defined as a tapered endmill to machine the outer chamfer using a 2d contour, you might need to drive the toolpath off different geometry though, due to the 'bite' out of the side. 

I would use a a 2d contouring pass, and I would place a sketch on the bottom surface of the part, and use 'project geometry' to select the large diameter with the bite, and then use this to draw in a circle. I would use this drawn in circle as the geometry in the 2d contour pass.

Otherwise you could use a 3d contouring path like paralell, as you are suggesting, but this part could be very efficiently processed like you said, with some basic 2.5d toolpathing.

[chmed]

image inline - 

[Chetan.Bankar]

Hi @chmed,

Thanks for raising your query onto Autodesk Support.

As mentioned by @pmesten18 you will have to create a circular sketch at the bottom of the model and then use this as a geometry in 2D Contour toolpath with chamfer option checked as shown in the below video:

I hope this helps.

Thanks and Regards,

[daniel_lyall]

@chmed make the Vbits using the chamfer tool option in the tool libury.

The tool paths in Fusion are whatever goes it does not matter what its name is they can be used in many applications, I use them in wood all the time all you need to do is learn what they are for there are people out there that think it is all a wast haveing fancy tool paths for cutting wood what is a lot of crud.