Using fusion 360 manufacture tools to CNC rout Aluminum Composite Material

[ALE.REAL3D]

My name is Alejandro Gonzalez

Thanks in advance for any advice you may help me with

I am fairly new creating tool paths for the CNC router

and to make it better I am trying to cut ACM (Aluminum Composite Material ) in which a 90 degrees V tool with .090 flat tip goes into the material leaving only like .015" above the bottom.

The problem that I am having is that no matter how I want the groove to be centered with the bending centerline of the flat pattern or with a  line created in the Manufacture Model environment as a sketch the tool is moved to the left of the line.

I am using a 2D Contour strategy   

On the Passes tab, I have tolerance = .0004

Sideways compensation: left

Compensation Type = off

Compensation radius allowance= .01965

and that's basically what I have

And the toolpath simulation shows the tool to a side of the line

never on top exactly

I am attaching a model in which you can see that I moved the line (open contour  (and maybe that's the real problem here)) to make sure that the cut is on the center of a line that goes between vertices (imaginary line )

Please advise

[johnswetz1982 · Accepted solution]

Use [Trace] operation instead.

[ALE.REAL3D]

 Hello there

When trying to cut the Aluminum Composite leaving only around .75 mm from the bottom to be able to cut the first layer of aluminum and some of the inside polypropylene to bend the material this is the message I got:

"The Safe Distance is higher than the Feed Height. Consider reducing the Safe Distance, otherwise, the Feed Height will be raised to match the Safe Distance"

I really can't find a way to avoid this message 

Any help will be very apperciated 

Thanks 

[seth.madore · Accepted solution]

It's honestly not something I'd worry about, as it will have zero impact on your toolpath creation. If you're bound and determined to eliminate all errors and warnings, take a look at the Height Settings of Clearance, Retract and Top Heights. Now take a look at your Safe Distance. If your Retract plus Top Height exceed your Safe Distance, there's your issue

[ALE.REAL3D]

Thanks a lot for this answer:

It will solve the problem of the tool alignment with the model lines 

I will have to fight with the sheet metal environment to create a material that can give me the bending conditions of the Aluminum Composite in order to get a flat pattern that can be used with the trace toolpath. ( and I will  !!) Maybe using a very thin material with a specific bending radius and 

Another question Is the Axial Stock to Leave on the stock to leave tab the only way to determine the depth of the tip of the cutting tool into the material ?         since there is not modeled v groove in the model?

Big Thanks

[johnswetz1982]

Axial stock to leave, or you can do [Model Bottom] and then give a positive number that will raise your tool above your table/face of material.

[ALE.REAL3D]

Thanks a lot for all the answers I got here in the forum

It is  still non an intuitive way to create these elements using the sheet metal environment I will definitely keep trying and once I have a good approach I will post it

Thanks again to all