Ok, the boss has given me a part to make on the 4 axis VMC consisting of a long AL tube 1&1/4" dia to be drilled and milled
We've done the part before on the older 4th axis machine so we've got a program and a setup sheet and a mounting mandrel with a left hand thread
I screwed up the part on the mandrel with a left hand thread, and put a tailstock in the other end.
And it time to test run the modified program to drill the centers for the holes, then put the pilot holes in (had to modify it a bit to suit the 530i control)
All goes well
I then think "ahh best I make sure its still tight on its left handed mandrel before running the milling bits" and promptly undid it losing the 4th axis position as a result
Damned lefthanded threads.. why could'nt they be nice sensible right handed ones?
Boris
Perhaps I should have taken the hint from the setup sheet:-
"Alternative method: run out of the factory screaming 'no no not this job again' and dont come back for 2 weeks"
We've done the part before on the older 4th axis machine so we've got a program and a setup sheet and a mounting mandrel with a left hand thread
I screwed up the part on the mandrel with a left hand thread, and put a tailstock in the other end.
And it time to test run the modified program to drill the centers for the holes, then put the pilot holes in (had to modify it a bit to suit the 530i control)
All goes well
I then think "ahh best I make sure its still tight on its left handed mandrel before running the milling bits" and promptly undid it losing the 4th axis position as a result
Damned lefthanded threads.. why could'nt they be nice sensible right handed ones?
Boris
Perhaps I should have taken the hint from the setup sheet:-
"Alternative method: run out of the factory screaming 'no no not this job again' and dont come back for 2 weeks"
