Need help with a part

[MSL]

Hi all,

Below you will find an attached Mastercam file. What would be the best way to machine inside groove and C-Bore on this part?

 

Thanks.

Ara.

TEST CUT 1.MCX-6

[Guyinthedesert]

Hi all,

Below you will find an attached Mastercam file. What would be the best way to machine inside groove and C-Bore on this part?

 

Thanks.

Ara.

 

Are you trying to do it on a mill? The best way is with a trepan tool. Whether it's cost effective depends on the quantity

[The_kid]

is this a second op on a mill? if so I'd trepan it on the lathe it would be much faster.

[MSL]

Thanks guys for looking.

This is going to be done on a mill. I can not finish it on a lathe because the groove and C-Bore are not parallel to face. I tried different surface machining but couldn't come up with a good result.

Thanks.

[The_kid]

ok I see that now! what have you tried for finishing?

[MSL]

ok I see that now! what have you tried for finishing?

 

 

 

I have pretty much tried all of surface finish toolpaths. I'm going to try some 5 axis cuts.

Thanks.

 

Ara.

[GoetzInd]

What type of machine? If 5axis, just create a tool plane from the tilted geo and hit is with some regular 2d contours with a bull mill.

 

Mike

[Brad St.]

depending on your tolerances I'd go for a 2d pocket & contour projected to a suface using a bullnose endmill. If you need to be technical the undercuting of the geometry to a normal Z direction in the file shows the groove walls with a .0006" undercut which again if it's tight tolerance stuff you'd need a 5axis machine or secondary setup and fixturing.

 

doing the above you'll get close and closer if you go with smaller tooling for a finish cut around the outside of the pocketing. you could even add in a ball endmill with just enough fine stepovers contouring out to the od withing the 1st cutter diameter to take it to the limit.

[MSL]

depending on your tolerances I'd go for a 2d pocket & contour projected to a suface using a bullnose endmill. If you need to be technical the undercuting of the geometry to a normal Z direction in the file shows the groove walls with a .0006" undercut which again if it's tight tolerance stuff you'd need a 5axis machine or secondary setup and fixturing.

 

doing the above you'll get close and closer if you go with smaller tooling for a finish cut around the outside of the pocketing. you could even add in a ball endmill with just enough fine stepovers contouring out to the od withing the 1st cutter diameter to take it to the limit.

 

I'll give it a try.

Thanks.