3 axis undercut

[toadsix]

Hello all,

 

I have a part here that has 2 intersecting holes that I would like to deburr the break thru with a lollipop cutter or something similar.

How would you multi axis guys approach something like this?? This is new territory for me.

I only have 3 axis mills to accomplish this. I can't seem to get anything to work. Attatched is the .MCX file in question. Any help would be greatly appreciated.

PART HELP.zip

[Hardmill]

Gonna be tough to drive a tool to follow that path since there are a couple different dias.

You can get a lollipop tool to follow the geo wth a 3d toolpath but it wants to gouge the

walls. Maybe create a chamfer and use a surface toolpath but even that will take a bit of work.

Especially since it get so close to the bottom of the lower dia

 

 

 

 

 

PEACE

[toadsix]

Gonna be tough to drive a tool to follow that path since there are a couple different dias.

You can get a lollipop tool to follow the geo wth a 3d toolpath but it wants to gouge the

walls. Maybe create a chamfer and use a surface toolpath but even that will take a bit of work.

Especially since it get so close to the bottom of the lower dia

 

 

 

 

 

PEACE

 

Thanks for the reply Hardmill. Ya I tried doing it with 3d contour, creating geometry, etc... I was hoping there was a cleaner way to do it.

 

I appreciate you looking at it for me.

[David Conigliaro CNC Software Inc.]

Surface-Finish-Contour supports undercuts and lollipop tooling...

[taperlength]

Surface-Finish-Contour supports undercuts and lollipop tooling...

 

Is there any way to do undercuts with a keyway type cutter? Let's say I need to do a part which is like a golfball on a tee and the toolpath has to go from the top down to the tee. There is not enough room to use a true lollipop shaped cutter, but a keyway cutter with a full radius would fit.

[David Conigliaro CNC Software Inc.]

Slot mills are supported as well.

[taperlength]

Slot mills are supported as well.

 

Thanks David, I was trying to do a slot mill with a full radius and that does not work.

However, using two corner radii, with each radius equal to half the thickness of the cutter does work.

Just have to watch out for the retract so it does not come up through the part.

[Jayson Kramer]

Just have to watch out for the retract so it does not come up through the part.

use the option of direction button to take care of this.