Re: [CAD_CAM_EDM_DRO] Re: Timing Belt Sizing

Wally: I am running NEMA 42 size stepper motors. I also have a 1850 oz. in stepper but have not mounted it. The 3 motors that I have
mounted on my Bridgeport have encoders that I may use to go closed loop.They are Compumotor made by Eastern Air Devices.

Wally K wrote:

> What motors are you running that give you 1200 oz-in, steppers or
> servos.
>
> Wally K.
>
> --- In CAD_CAM_EDM_DRO@egroups.com, "Carey L. Culpepper" <mr.c@b...>
> wrote:
> > Hugh: I am currently running 3/4" "L" series belts with 12 tooth
> and 24 tooth pulleys. Even the knee feed(z axis) has a 3/4" belt.
> > This one really should be a 1" belt but I was having trouble
> finding a 12 tooth in 1" . So I will use a 1" 14 and 28 tooth pulley
> on
> > the knee. My motors are about 1200 oz. in.. I was drilling some
> very big holes with the x axis(angle head) and had no problems. One
> > drill pass was from 1" to 1 3/4" . The program went haywire and
> went rapid feed into the piece. It just pushed it down the table. It
> > was a piece of cold rolled clamped very tightly to the table.
> > Those big pulleys would be overkill. Particularly with only 785 oz.
> in. I will try to find a 1" kevlar belt for the knee at some
> > point since it is pushing a good bit of iron up and the kevlar
> won't stretch as much. I hope that this helps, Carey.
> >
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@egroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
> List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
> Moderator: jmelson@... [Moderator]
> URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
> FAQ: http://www.ktmarketing.com/faq.html
> bill,
> List Manager