High Feed Optimization questions

[GPC_CNC]

Hey Guys,

 

I'm using dynamic core milling on some 17-4 stainless and I have my backfeed set to 500 ipm (non-cutting feedrate). I'm trying to use the High Feed optimization and it seems to work great for cutting tool paths, but it seems to cut the backfeed moves down to an unreasonable level say around 100 ipm as if it's treating these moves as cutting feed rates. I have the air cutting set at 500 max ipm as well. Any suggestions as to how to setup the high feed options?

 

Thanks

 

Greg

[YoDoug®]

The dynamic toolpaths control the radial engagement of the tool to maintain a constant load. Highfeed is designed to vary feedrates on conventional toolpaths that have a great variation in chip load. You shouldn't need to use High feed with dynamic toolpaths.

[jeff]

You shouldn't need to use High feed with dynamic toolpaths.

^^

 

What he said.

 

I haven't used the high feed since V9, and even then I couldn't get it to do what I wanted to do.

 

[GPC_CNC]

Thanks for the reply. I'll try without it and see how she does.

 

Greg

[jeff]

Just a heads up,on some machines,having a super fast back feedrate might clip a corner or two depending on part shape.

On my Okuma (I forget who gave me the tip but thanks!), I use Hi-Cut and can now use 1200 IPM as my back feedrate in most situations.

[Matthew Hajicek - Singularity]

If you are going to use Highfeed, there's a setting for maximum air-cutting feedrate that IIRC defaults to 100ipm.