Contour with shallow and flats

[Jimmy Galto at SAR Engines]

I'm using V9 and trying to produce a uniform finish across a large impeller. I'm using a contour finish toolpath and setting shallow with add cuts and flats with the same step over as on the vertical walls.

 

The finish on the vertical walls is great but as it moves into the floor at the base of the impeller blades the scallops appear to be as if the stepover is set at 0.050. I'm using a 0.005 stepover throughout the part including shallow and flats.

 

I was hoping to get a uniform finish using a single toolpath. I may need to use a finish scallop between the blades to smooth out that area. Any suggestions would be appreciated.

[HevyMetl]

I was never happy with the results of using one toolpath. My recomendations would be to use two toolpaths. Make sure and limit your toolpaths with the angle setting so you are not recutting alot of area. I usually use about a 10° overlap.

[Jimmy Galto at SAR Engines]

John,

 

Thanks for the help.

 

Do you think a scallop toolpath for the flat areas between impeller blades?

 

I have seen some good feedback about project toolpaths on the forum also.

[Ocean Lacky™]

Not having seen the part, it's difficult to say, but Finish Contour and Finsh Shallow usually make for a good combination also.

[crazy^millman]

Aslo might talk them into getting X the advanced 5 axis toolpaths handle impellers vey nice and have spefically designed toolpaths for them.

 

I would look at curve and draw my toolpath and then that will project it to the surface you are trying to cut a little old school but in V9 that was a toolpath I could always count on for good results that way on diffuclt shapes while keeping file nc file size to a useable size.

 

HTH