Rotary tables

--Have just about given up trying to make do with a Sherline cnc
rotary table. What's the next step up in terms of torque? Gotta be 'closed
loop', too.
Reply to
steamer
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in pork?? =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 > =A0 =A0 =A0 =A0 Hacking the Trailing Edge! =A0: =A0Where's my share??? > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0www.nmpproducts.com > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0---Decks a-wash in a sea of words-=
Reply to
raamman
--Here's a video of what I'm doing:
formatting link
--For a small part, in this case 1/8" x 1/2" flat aluminum bar it's doable but I want to scale up and do some larger pieces; i.e. 1/4" x 1" al.
Reply to
steamer
m bar it's > doable but I want to scale up and do some larger pieces; i.e. 1/4" x 1" a= l. > > -- > =A0 =A0 =A0 =A0 "Steamboat Ed" Haas =A0 =A0 =A0 =A0 : =A0$150,000,000,000= in pork?? > =A0 =A0 =A0 =A0 Hacking the Trailing Edge! =A0: =A0Where's my share??? > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0www.nmpproducts.com > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0---Decks a-wash in a sea of words-=
Reply to
Half-nutz
num bar it's
actually it looks dead simpler to me the way he's doing it
perhaps your local cnc machine dealer/ repair might have a used rotary table they can salvage from some machine they can sell you for a song
Reply to
raamman
sheesh...toss that sherline and use a shoulder bolt to pivot the fixture on--rotate with a large crescent wrench.
Reply to
Bipolar Bear
--Heh. Been there, done that but finish is critical and I couldn't get a good enough finish on a grinder.
Reply to
steamer
Who said anything about grinding ?
Reply to
Bipolar Bear
--Well that was the previous method I used, with part located via predrilled hole, on a pin. Have done this sort of thing with a milling cutter too but it sorta creeps me out and I'd rather avoid it if at all possible. No sweat; job's done for now but I gotta say that Sherline isn't really a 'rotary table'; more of a rotary indexer, i.e. max torque is only achieved when the motor is motionless. Curiously torque is better at high speeds than at lower ones.
Reply to
steamer
> >Who said anything about grinding ? > > =A0 =A0 =A0 =A0 --Well that was the previous method I used, with part loc= ated via > predrilled hole, on a pin. Have done this sort of thing with a milling > cutter too but it sorta creeps me out and I'd rather avoid it if at all > possible. No sweat; job's done for now but I =A0gotta say that Sherline i= sn't > really a 'rotary table'; more of a rotary indexer, i.e. max torque is onl= y > achieved when the motor is motionless. Curiously torque is better at high > speeds than at lower ones. > > >-- > > -- > =A0 =A0 =A0 =A0 "Steamboat Ed" Haas =A0 =A0 =A0 =A0 : =A0$150,000,000,000= in pork?? > =A0 =A0 =A0 =A0 Hacking the Trailing Edge! =A0: =A0Where's my share??? > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0www.nmpproducts.com > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0---Decks a-wash in a sea of words-=
Reply to
Half-nutz
--Ah! Because I'm doing this on a 'manual' mill! :-) I've got a stepper on X that I use for rapid table moves back and forth, etc. Makes it really fast for onesy-twosies. For real production I head over to the 4-axis machine but these parts didn't deserve that kind of electric bill, heh.
Reply to
steamer

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