4th axis milling on my Tormach PCNC 770 part 2

[05kevin]

Link to 2nd video

http://www.cnczone.com/forums/videos...st1097967.html

Kevin

[Steve Seebold]

I'm impressed. Very nice work.

[05kevin]

Thanks Steve, I added a few pictures of the spark arrestor on the bike.


By kdb8032 at 2012-04-11


By kdb8032 at 2012-04-11


By kdb8032 at 2012-04-11

Kevin

[Steve Seebold]

Ya know what's really cool about this spark arrestor? NO ONE will be able to say " oh, I know someone who has one just like it".

Very nice job.

[David Bord]

Nice work...

Can you talk a bit on how you machine the side attached to the 4th axis and how you cleanly part it off ?

David

[05kevin]

David,

I used a 2d contour with a curve from the part on the A axis side and cut Z at .5 then rotate A axis 180 deg and run the same 2d contour with the curve reversed so I will be climb milling and run at Z .5. This leaves a tab that is 1 inch thick, Then I use a finish waterline with a finish Z depth of .5 Then copy the waterline operation and Rotate 180 deg and rerun the operation.

I keep copying the 2d contour operations and the finish waterline operations and change the Z value, I was stepping down .250 every operation until I had a tab that was .o75 thick.

I saw the tab with a hacksaw then have to blend the tab by hand.

Kevin