Re: Flex Coupling; No Backlash.

Hello, OK, you MAYBE; right... but considering the use of couplings,
I BOUGHT, with the disk inserts, and the all so common plastic,
nylon, and other polycarbonated configuration items to be found; With
trial and error, I have to differ, and accroding to my setup, and
application, I find it, at least, a TOTAL Improvement for my Sake,
OVER, what has Been Installed, and Time Involved, in getting a
QUALITY Finish, and Repeatability. Your Right, Without BackLash, 'It
would'nt Move'.Then Again, Let's see how Long, it will Last. To Be
Continued:

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Andy Wander <awander@v...>
wrote:

> How does it eliminate backlash? I would think, if anything, it would
> increase it(even if only ever so slightly)
>
> Andy Wander
> Verrex Corporation
>
>
> -----Original Message-----
> From: lathehand_2 [mailto:lathehand_2@y...]
> Sent: Tuesday, January 25, 2005 6:52 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Flex Coupling; No Backlash.
>
>
>
> Hello Group,
> I wanted to find a way to do a coupling that could be mounted, even
> though there is a bit of misalignment and found a way to do it.

Just

> would like to share the idea and it works perfect, without the
> expensive costs, of a coupling I seen in a local distributer Cat.

I

> went to Sears, and bought a flex Screw Driver, Flex Extension, 4''

in

> length, 8 bucks W/O tax, and got a piece of brass round,and turned

2

> couplings,cut the flex,in two, and Silver Soldered the pieces into
> the bored couplings,then did some turning, and boring, and 'WALAH',
> instant flex coupling for my Lathe, For the cross slide feed.

Stepper

> Motor mounted on the rear of the carriage with a homemade bracket,
> and a real good design. I had problems with the alignment, before,
> when first tring to do this, at the beginning, and have noticed

that

> every turn of the hand crank, made a copy of the screw,THREADS, in
> the nut, that drives the slide, being TRANSFERED, to the work

piece.

> Bad Finish resulted, and steps on the part that reflected the

screws

> movement, transfered,to the piece, bad, or out of round, alignment.

I

> seen this coupling sell for 71 bucks at SPDI and MSC, I think I
> remember. Just thought I'd Pass this on, maybe an inprovement, to

all

> that could use some Help with Alignment Problems, and a good way to
> eliminate backlash, at the same time. Got enough material left to

do

> an other axis. So: ENJOY..
>
> P.S. I still think making my own Cog Pulleys is best, I made 15 and
> am starting on the bushings and bores soon. Price wise, and

ratio's,

> is a cheap deal, aluminum plate an easy find, and doing the work
> satisfying. Forget Plastic!!! And Shipping Charges.
>
>
>
>
>
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