On 11/24/23 02:43, gene heskett wrote:
On 11/23/23 22:16, gene heskett wrote:
[...]
My rotary table was not expensive, but it has an adjustment on the
depth of engagement of the worm, to allow backlash to be reduced.
I thought that was a fairly common arrangement.
Seems to be std, my 4" tabl
Can get 1 and 0.5 degree positioning with 360 teeth and two locks, with one
lock spaced n+0.5 degrees away. Start at zero degrees, turn 10 then engage the
lock that's at zero. Drill, then turn 22.5 degrees and engage the other lock
which is at 20.5 degrees.
Could further increase the options w
On 11/23/23 22:16, gene heskett wrote:
On 11/23/23 17:22, marcus.bow...@visible.eclipse.co.uk wrote:
On 2023-11-23 21:18, Chris Albertson wrote:
Yes, a magnet and a steel disk is the simplest possible design. If
you don’t need indexing. Nothing would move. The disk could slide
over the magn
On 11/23/23 17:22, marcus.bow...@visible.eclipse.co.uk wrote:
On 2023-11-23 21:18, Chris Albertson wrote:
Yes, a magnet and a steel disk is the simplest possible design. If
you don’t need indexing. Nothing would move. The disk could slide
over the magnet and then when energized the sliding w
On 11/23/23 16:19, Chris Albertson wrote:
Yes, a magnet and a steel disk is the simplest possible design. If you don’t
need indexing. Nothing would move. The disk could slide over the magnet and
then when energized the sliding would stop.
The slop issue is normally solved by always rotating
On 11/23/23 15:40, Ryan McIntosh wrote:
If you are going to clamp a metal disc with anything, use an
electromagnet... But if it's a worm drive with that much slop, I guarantee
there's some improvement to be found by controlling the thrust movement of
the pinion gear. Inserting a shim (could be
On 11/23/23 14:26, Chris Albertson wrote:
On Nov 22, 2023, at 1:06 PM, gene heskett wrote:
I'd have to agree Andy. I need to design a disk brake for my A axis as there's
half a degree of slop in the worm drive which if it gets to the motor will be
held, but the slop in the worm makes fo
On Thu, 23 Nov 2023 at 20:42, Ryan McIntosh wrote:
>
> If you are going to clamp a metal disc with anything, use an
> electromagnet.
Maybe re-purpose parts of a car air-conditioning clutch.
(I am sure that these have loads of applications, as they can clamp
and release while rotating, though tha
On 2023-11-23 21:18, Chris Albertson wrote:
Yes, a magnet and a steel disk is the simplest possible design. If
you don’t need indexing. Nothing would move. The disk could slide
over the magnet and then when energized the sliding would stop.
The slop issue is normally solved by always rotatin
Yes, a magnet and a steel disk is the simplest possible design. If you don’t
need indexing. Nothing would move. The disk could slide over the magnet and
then when energized the sliding would stop.
The slop issue is normally solved by always rotating in one direction so maybe
it could be con
On 11/23/23 14:26, Chris Albertson wrote:
On Nov 22, 2023, at 1:06 PM, gene heskett wrote:
I'd have to agree Andy. I need to design a disk brake for my A axis as there's
half a degree of slop in the worm drive which if it gets to the motor will be
held, but the slop in the worm makes fo
If you are going to clamp a metal disc with anything, use an
electromagnet... But if it's a worm drive with that much slop, I guarantee
there's some improvement to be found by controlling the thrust movement of
the pinion gear. Inserting a shim (could be punched out of an old set of
feeler guages
> On Nov 22, 2023, at 1:06 PM, gene heskett wrote:
>>
> I'd have to agree Andy. I need to design a disk brake for my A axis as
> there's half a degree of slop in the worm drive which if it gets to the motor
> will be held, but the slop in the worm makes for sloppy looking holes, but
> the a
I remember a customer bumping a geneva gear tool changer
using the side of the platen that held the electrode
bumpint would index the tool
he used gcode on a Fanuc/Elox sink edm.
yeah i suppose a machine tool _is_ an expensive motor
but shows people are clever
tomp
On 11/23/23 04:06, gene h
On 11/22/23 15:13, andy pugh wrote:
On Wed, 22 Nov 2023 at 19:15, Roland Jollivet wrote:
Interesting, and it looks rigid enough for real work..
https://www.youtube.com/watch?v=4r4_uo6ZrAE
https://www.youtube.com/watch?v=ztW4JIbLSMs
Quite a clever idea for machines with closed controllers an
Wh
> On Nov 22, 2023, at 12:12 PM, andy pugh wrote:
>
> Quite a clever idea for machines with closed controllers and no easy
> way to provide motor power into the workspace.
>
> With LinuxCNC it's probably always going to be better to be fully motorised.
What about cost? If this device is che
On Wed, 22 Nov 2023 at 19:15, Roland Jollivet wrote:
>
> Interesting, and it looks rigid enough for real work..
>
> https://www.youtube.com/watch?v=4r4_uo6ZrAE
> https://www.youtube.com/watch?v=ztW4JIbLSMs
Quite a clever idea for machines with closed controllers and no easy
way to provide motor p
Interesting, and it looks rigid enough for real work..
https://www.youtube.com/watch?v=4r4_uo6ZrAE
https://www.youtube.com/watch?v=ztW4JIbLSMs
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