gkoenig
Titanium
- Joined
- Mar 31, 2013
- Location
- Portland, OR
(note: never dealt with any of this, don't have any idea WTF I'm doing).
Making a sub-plate for the Sankyo rotary on the Speedio. Machined some 1" thick D2 to size today, off to grinding tomorrow. When it gets back, I'll be putting 4 countersunk holes in it to bolt to the table, and 3x M12s on it so the clamps can bolt directly.
Question I've got is: just how dialed in are most people getting a 4th axis? Along Y is easy enough to knock in, but I'm mostly curious about Z. Bolted directly to the table, the face of the rotary is showing 0.0004" of tilt. That could get better/worse when I put a surface ground plate underneath it, but I honestly have no f-ing clue if that 0.0004" is good? Bad? What the hell is a good or bad reading here?
And shims seem like sort of a PITA, so at what point do you go through all that rigamarole?
Not making rocket-ship parts here so no crazy tolerances (I like to aim for +/- 0.002" all around in general). How dialed in would a practical machinist make this (i.e. somewhere between a total hack and the Hermann Schmidt).
Making a sub-plate for the Sankyo rotary on the Speedio. Machined some 1" thick D2 to size today, off to grinding tomorrow. When it gets back, I'll be putting 4 countersunk holes in it to bolt to the table, and 3x M12s on it so the clamps can bolt directly.
Question I've got is: just how dialed in are most people getting a 4th axis? Along Y is easy enough to knock in, but I'm mostly curious about Z. Bolted directly to the table, the face of the rotary is showing 0.0004" of tilt. That could get better/worse when I put a surface ground plate underneath it, but I honestly have no f-ing clue if that 0.0004" is good? Bad? What the hell is a good or bad reading here?
And shims seem like sort of a PITA, so at what point do you go through all that rigamarole?
Not making rocket-ship parts here so no crazy tolerances (I like to aim for +/- 0.002" all around in general). How dialed in would a practical machinist make this (i.e. somewhere between a total hack and the Hermann Schmidt).