Finishing a electrode with 4 different surf angles

[El Scotthead]

Happy Monday everybody!

(Yeah, I know....But I'm hopped up on some nuclear coffee right now )

 

I put a file called "Scotthead1.mc9" in the MC9 folder on the FTP site. It's an electrode I have to cut, and hold within +/- 0.0002 on the tolerances. I alreay cut some of these and they came out great. But I'm just not satisfied with the program--I probably could have done better, especially with the finishing shallow toolpass.

 

This isn't important(seeing as how I already have enough electrodes to burn with). I just wanted some other opinions for future reference.

 

Later dudes

 

scott

[El Scotthead]

Oh yeah, btw...

 

the 4 sidewalls shown as purple surfaces are for indicating and positioning only. They won't be burning any geometry.

 

 

scott

[Kannon]

El Scotthead,

Could you fire it my way?

[El Scotthead]

Kannon,

 

it's been sent. Thanx and have fun

 

scott

[betts]

My .02

After the perimeter cuts, I probably would have 2D pocketed the flats, then semi fin with a 3D contour, and finish with the same. That would call for a smaller bull nose radius than you had, but you weren't going down to the .01 R that is there, so I don't know how critical that is to you. Then if the .01 R that is an "inside fillet" I would do leftover with the 1/32 or however small you are going.

[El Scotthead]

+1 betts,

 

you just made me realize that I screwed up when I put that file on the FTP. The stock to leave on all finishing passes should be -0.0100. I left all toolpasses 0.010 heavy so I could check geometry and surface finish. Must not have resaved after posting and running.

 

The "outside 0.010 fillet"(at the top of the trode) will go to a sharp corner and the "inside fillet" will become a 0.0200 radius. Both are critical. I should note that the bull with a 0.030 corner is the smallest corner radius bull cutter I have available right now--and this was a quick turn job. I couldn't wait while a more suitable cutter was ordered.

 

Thanks for the input, though. I'll give your methods a try and see how they come out.

 

scott

[Kannon]

Sent you the file....

Hope its what you wanted

[El Scotthead]

Thanks for the replies guys.

 

I learned a couple things

 

scott