Re: [CAD_CAM_EDM_DRO] timing belts vs ballscrews/rack-n-pinion

Chris,

I have only read about the slotted thin metal bands... I never
used them. They seem to have great promise though... almost
like a metal timing belt. Might be some big wear issues.

As for the soft backlash on timing belts... a three pulley
setup (two idlers) to get more belt wrap would lower the
tooth deflection. The figures I gave were from Gates and assumed a 180
degree + wrap I would guess. They
recommend high wrap angles.

IMTS... ha. I moved here from Chicago a couple years ago.
I was up there a little while ago giving an engineering seminar on lowering
noise levels of portable power tools.
I liked the IMTS a lot... you will just have to settle for watching
hexapods and stuff.

Les

Leslie Watts
L M Watts Furniture
Tiger, Georgia USA
http://www.rabun.net/~leswatts/wattsfurniturewp.html

----- Original Message -----
From: "Chris L" <datac@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, February 10, 2002 9:19 PM
Subject: Re: [CAD_CAM_EDM_DRO] timing belts vs ballscrews/rack-n-pinion


> The only OEM machine I ever new of that used Some form of Belt drive
is/was
> Precix. Not sure what they used but almost bought one once. Specifications
were
> not any different than other machines but the Z axis clearance was a bit
limited
> on the one I considered.
>
> Les, What about some of the Stainless Steel thin belting (all metal) ??
>
> Do you have any experience with that ??
>
> With the traditional belts, couldn't one find a way to drive the belt with
more
> than one pulley to minimize that "soft backlash" ?
>
> I wanted to try a belt setup myself. I thought that it would be very
quiet. One
> would need to watch for accumulation of dirt on the belt, so location
would be
> critical.
>
> Too bad IWF is so far away from me. I am stuck with IMTS in Chicago. There
are
> far less Routers than Metalworking machines.
>
> Chris L