For a model engine, it is good enough after some emery paper. A "real" engine's cam should be hardened and the lobe finished with emery. But for a high performance engine, it's only good for roughing before finishing the cam on a cam grinder.
Yes, I'm calculating the minimum travel necessary to cover each facet. Only when milling the chest (part between tip and base circle) there is left some place for improvement worth looking at. I later found that this section is way easier to calculate than I initially thought.
It is a modified (by me) 150 mm Vertex. Longer shaft of the rotary table, better axial needle bearing for that shaft, added rotary encoder, support angle on the back (welded structure at the left), motor mount with coupler.
If you wanted to, could you run the cam straight from the mill without grinding it?
dantheman1998 1 month ago
@dantheman1998
It depends! :-)
For a model engine, it is good enough after some emery paper. A "real" engine's cam should be hardened and the lobe finished with emery. But for a high performance engine, it's only good for roughing before finishing the cam on a cam grinder.
MuellerNick 1 month ago
Well done! The program seems to have very little wasted motion.
YoungJim409 11 months ago
@YoungJim409
Yes, I'm calculating the minimum travel necessary to cover each facet. Only when milling the chest (part between tip and base circle) there is left some place for improvement worth looking at. I later found that this section is way easier to calculate than I initially thought.
Basically, I just move 0.5 mm out of the cut.
MuellerNick 11 months ago
It is very schee wos you do gmochts has :-P
Schene grüas vom Bene gfrei me scho aufn Stammtisch
FraeserFreak 11 months ago
Thanks Nick, Did you build the 4th Axis yourself? And I do like the scraping videos.
petsatcom 11 months ago
@petsatcom
It is a modified (by me) 150 mm Vertex. Longer shaft of the rotary table, better axial needle bearing for that shaft, added rotary encoder, support angle on the back (welded structure at the left), motor mount with coupler.
MuellerNick 11 months ago
Very nice but it looks like your tool is too small and dull or the feed is too high if that is steel. Thumbs up though!
TheEgoblitz 11 months ago
@TheEgoblitz
All of it, you are right! :-)
Yes, I increased feed for this demo, the mill is not a perfect choice. I just wanted to show the process. The part will see the scrap bin soon.
MuellerNick 11 months ago
I want one!!!! Will you give a description of the rotary table setup? A more detailed account of how you converted the RT.
TheDaumen 11 months ago
@TheDaumen
No, not for you! :-)
It only works with a CNC, so it has no use for you. Sir John's is the best fit for your needs.
MuellerNick 11 months ago