rghing question

[cherokeechief79]

im machining a part that has a pyramid kind of shape.

I got a nice toolpath using surf high speed area rgh and a .75 bullmill.

im using this for roughing and its leaving .075 steps in the walls from my stepdowns.

ive seen some of the other toolpaths use stepup as well to get rid of some of the material but it doesn't seem to be in this toolpath.

the next tool finishes the walls and its a .375 ball.

the sample I made was aluminum and you could see in the finish where the material was heavy.

now I just started the run but its 15-5 stainless which has been very rough on op 1 which was actually very simple.

I guess I could run another ballmill over it first with a big stepdown but less than .075 using a waterline cut.

is there an easy way in area rgh to do it without adding a ton of time to the part?

 

[crazy^millman]

Might try an up-down approach with a bull endmill to help know off the high spots. I am thinking with the right tool should wear pretty evenly. You say bull, but what kind of radius? .03R might be to small might look at a .125R to help get a better transition between each step. 

[cherokeechief79]

its 1.125 high 8.5 x 8.5 and im using a .75 bull w a .06 rad.

sure wish I could keep makin them out of aluminum!

[Leon82]

I would use the waterline for a semi finish cut.

 

You can try to use a rest mill and play with it to chop your rough scallops in half maybe 

 

[jeff]

On 3/14/2020 at 3:28 PM, cherokeechief79 said:

 

ive seen some of the other toolpaths use stepup as well to get rid of some of the material but it doesn't seem to be in this toolpath.

 

 

Could you use Optirough for this part?