problem with machining small teeth

[Anonymous]

Hi, I'm trying to machine the teeth (not sure what its called), I have tried almost all of the operation but most of them dont generate toolpaths/ toolphats that only machine part of the teeth. The teeth is 1.02mm wide, I'm using a 1mm flat end mill for this. I would like my end mill to run up an Z-Y plane along the contour of the teeth I understand fusion does not allow us to machine a 1mm pocket with an 1mm end mill, this is why the teeth are 1.02mm wide, accurary is not very important here. Anyone has any idea? Thanks! 

[seth.madore]

What sort of machine are you using? If you are on a 3 axis, you will end up with fillets equal to the radius of the tool. Is that acceptable?

[Anonymous]

I am using a 3-axis VMC. Yes, the fillets are acceptable. Or are there any other ways that I can machine out the triangles as they are?

[johnswetz1982]

Use a V block or sine plate to hold your work at 45degrees.

[Anonymous]

But still, which operation should I use to generate the toolpaths?

[johnswetz1982]

Either [Trace] or [2D Contour].

[engineguy · Accepted solution]

@Anonymous 

Didn`t we do this on a different block about 10 days ago ??

Anyway, if you are OK with the radius in the slots the use the 2D Trace strategy as that will run in the Z as well as the Y so you get the angle, there will also be some overcut but you can adjust that using the "Axial Offset" option to make the slots deeper or shallower as you like.

File attached, adjust to suit.

Regards

Rob

[Anonymous]

Thanks! I will experiment with Trace a bit later. Have you done this on another post? Would you mind sending me the link?

[johnswetz1982]

I remember seeing the exact same thing as well, I clicked on OPs name to see when he posted it but it was either a different user name or someone else doing the EXACT same thing.

[engineguy]

@Anonymous 

@johnswetz1982 

I have searched through my own posts but I don`t seem to be able to find the thread. I did however find the original file that was posted and my modified version.

It was a little different in that the slots were 1.5mm wide using a 1.5mm tool meant it was a straight cut both ways so was actually easier than your latest one where you have a 1.02mm slot using a 1.0mm tool which meant a pass both ways for each slot.

Here is an image of the original one that was posted back then and I have attached the original modified file again.

Regards

Rob

[Anonymous]

@engineguy 

@johnswetz1982 

I did post this about 1/2 weeks ago and deleted the post because I found some similar solution to my problem. But,  turned out that the toolpath generated is leaving some stock which I wasn't able to get rid of, so here I posted the same thing again.

Trace is exactly what I'm looking for, I've added 0.75 axial offsets to the last file @engineguy attached so it would not overcut.

Thanks for your help!