CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Re: re:Ballscrews/linear drive

Posted by Doug Harrison
on 2001-01-17 17:21:30 UTC
> Of course, I really need these things to take one second to move 12 to
> 18 inches. Pretty fast, I know. I think I figured I'd need a 3 or 5
> tpi ballscrew for the average motor.
>

Hi Steve;
We built doors like this for subway cars. The screw should have a fast
lead - at least .500" - or you will have difficulty opening them by hand,
even with ballscrews. I would gladly share the drawings but I no longer
have access to them.

Two suppliers I remember in the rail transit industry are Todco and Morton
Doors. With a little luck you might get access to such drawings through a
property engineer at a rail transit authority. Those that come to mind are
SEPTA, NYCTA, CTA, DART, MAX, MARTA and Metro North.

Let me know where you are located what you turn up. I might be able to call
in a favor from an old buddy.

Doug

Discussion Thread

Steve Greenfield 2001-01-17 09:19:40 UTC Ballscrews/linear drive Tim Goldstein 2001-01-17 12:07:32 UTC RE: [CAD_CAM_EDM_DRO] Ballscrews/linear drive ballendo@y... 2001-01-17 12:41:05 UTC re:Ballscrews/linear drive ballendo@y... 2001-01-17 13:05:22 UTC re:RE: Ballscrews/linear drive Steve Greenfield 2001-01-17 14:32:04 UTC Re: re:RE: Ballscrews/linear drive dave engvall 2001-01-17 15:00:55 UTC Re: [CAD_CAM_EDM_DRO] Ballscrews/linear drive Smoke 2001-01-17 15:21:13 UTC Re: [CAD_CAM_EDM_DRO] Ballscrews/linear drive Tim Goldstein 2001-01-17 16:00:32 UTC RE: [CAD_CAM_EDM_DRO] Ballscrews/linear drive Steve Greenfield 2001-01-17 16:21:12 UTC Re: re:Ballscrews/linear drive Steve Greenfield 2001-01-17 16:26:40 UTC Re: Ballscrews/linear drive Steve Greenfield 2001-01-17 17:13:32 UTC Re: Ballscrews/linear drive Doug Harrison 2001-01-17 17:21:30 UTC Re: [CAD_CAM_EDM_DRO] Re: re:Ballscrews/linear drive Smoke 2001-01-17 17:38:01 UTC Re: [CAD_CAM_EDM_DRO] Re: Ballscrews/linear drive Rich D. 2001-01-17 17:43:43 UTC Re: [CAD_CAM_EDM_DRO] Re: Ballscrews/linear drive Alan Marconett KM6VV 2001-01-17 18:02:03 UTC RE: Ballscrews/linear drive wanliker@a... 2001-01-17 18:06:16 UTC Re: [CAD_CAM_EDM_DRO] Re: Ballscrews/linear drive Les Watts 2001-01-17 18:25:16 UTC Re: [CAD_CAM_EDM_DRO] Re: re:Ballscrews/linear drive Ray 2001-01-17 19:31:35 UTC Re: re:RE: Ballscrews/linear drive Doug Harrison 2001-01-17 20:25:15 UTC Re: [CAD_CAM_EDM_DRO] RE: Ballscrews/linear drive Smoke 2001-01-17 20:58:49 UTC Re: [CAD_CAM_EDM_DRO] Re: re:Ballscrews/linear drive Steve Greenfield 2001-01-17 21:11:09 UTC Re: Ballscrews/linear drive Steve Greenfield 2001-01-17 21:14:29 UTC Re: Ballscrews/linear drive Smoke 2001-01-17 21:25:05 UTC Re: [CAD_CAM_EDM_DRO] Re: Ballscrews/linear drive Tony Jeffree 2001-01-18 00:44:25 UTC Re: Ballscrews/linear drive ballendo@y... 2001-01-18 04:27:20 UTC Re: Re: Ballscrews/linear drive Carlos Guillermo 2001-01-18 04:49:52 UTC Why ballscrews for linear drive? Steve Greenfield 2001-01-18 08:53:44 UTC Re: Ballscrews/linear drive Steve Greenfield 2001-01-18 09:06:09 UTC Re: Why ballscrews for linear drive? Steve Greenfield 2001-01-18 09:14:27 UTC Re: Why ballscrews for linear drive? Sven Peter, TAD S.A. 2001-01-18 11:45:05 UTC Re: [CAD_CAM_EDM_DRO] Re: re:RE: Ballscrews/linear drive