CAD CAM EDM DRO - Yahoo Group Archive

Handwheels on a retrofit? Why!? was Re: software questions DRO

Posted by vrsculptor
on 2003-09-30 07:48:13 UTC
--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@y...>
wrote:
> The most important reason to not use a CNC machine manually is a
safety issue. A mill with ballscrews is unlike a mill with acme
threads in that: when force is applied to the table it will "feed"
the ballscrew. Acme threads have an inherent binding effect.

Ron
This isn't usually true, more like a wives tale. If your ballscrew
pitch is much more than .5 turn/inch it won't backdrive. Most mills
are several turns per inch. If this wasn't true Bridgeport would not
have offerred a manual mill with ballscrews. Check out the ballscrew
company web sites.

Roger S.

Discussion Thread

vlocci 2003-09-29 07:48:31 UTC software questions DRO Jon Elson 2003-09-29 09:57:52 UTC Re: [CAD_CAM_EDM_DRO] software questions DRO Kim Lux 2003-09-29 10:09:23 UTC Re: [CAD_CAM_EDM_DRO] software questions DRO Kim Lux 2003-09-29 10:34:01 UTC Questions about chipbreaking inserts. turbulatordude 2003-09-29 10:41:37 UTC Re: Questions about chipbreaking inserts. mayfieldtm 2003-09-29 11:58:03 UTC Re: Questions about chipbreaking inserts. ballendo 2003-09-30 04:26:22 UTC Handwheels on a retrofit? Why!? was Re: software questions DRO c_holm10017 2003-09-30 07:32:54 UTC Re: software questions DRO R Rogers 2003-09-30 07:33:42 UTC Re: [CAD_CAM_EDM_DRO] Handwheels on a retrofit? Why!? was Re: software questions DRO vrsculptor 2003-09-30 07:48:13 UTC Handwheels on a retrofit? Why!? was Re: software questions DRO doug98105 2003-09-30 07:52:10 UTC Handwheels on a retrofit? Why!? was Re: software questions DRO Kim Lux 2003-09-30 08:42:49 UTC Re: [CAD_CAM_EDM_DRO] Handwheels on a retrofit? Why!? was Re: software questions DRO Terry Owens 2003-09-30 08:42:55 UTC Re: [CAD_CAM_EDM_DRO] Questions about chipbreaking inserts. Kim Lux 2003-09-30 08:46:15 UTC Re: [CAD_CAM_EDM_DRO] Handwheels on a retrofit? Why!? was Re: software questions DRO doug98105 2003-09-30 09:21:56 UTC Re: Questions about chipbreaking inserts. Tim Goldstein 2003-09-30 09:48:24 UTC RE: [CAD_CAM_EDM_DRO] OT: Questions about chipbreaking inserts. Kim Lux 2003-09-30 09:53:23 UTC Re: [CAD_CAM_EDM_DRO] Re: Questions about chipbreaking inserts. Kim Lux 2003-09-30 10:23:39 UTC Re: [CAD_CAM_EDM_DRO] Re: Questions about chipbreaking inserts. Torsten 2003-09-30 13:48:36 UTC Handwheels on a retrofit? Why!? was Re: software questions DRO Chris Seeley 2003-09-30 16:13:42 UTC Re: [CAD_CAM_EDM_DRO] Handwheels on a retrofit? Why!? was Re: software questions DRO R Rogers 2003-09-30 16:13:52 UTC Re: [CAD_CAM_EDM_DRO] Handwheels on a retrofit? Why!? was Re: software questions DRO R Rogers 2003-09-30 16:13:58 UTC Re: [CAD_CAM_EDM_DRO] Handwheels on a retrofit? Why!? was Re: software questions DRO Lee Studley 2003-09-30 16:18:16 UTC Handwheels on a retrofit? Why!? was Re: software questions DRO ballendo 2003-10-01 05:44:16 UTC Handwheels on a retrofit? Why!? mayfieldtm 2003-10-01 08:03:51 UTC Re: Handwheels on a retrofit? Why!? ballendo 2003-10-02 04:23:29 UTC Re: Handwheels on a retrofit? Why!?