--- In [EMAIL PROTECTED], Les Newell <[EMAIL PROTECTED]> wrote: > > Umm, A Bridgeport sized mill is usually fitted with something in the > region of a 30 in-lb motor. If you used a 250 in-lb monster on a plasma > cutter it would probably tear the gantry off and throw it though the > nearest wall!
Wow, am I way off. I assumed that a stepper with 300 in oz would be too small for a Bridgeport and that some guys have problems with 50 inch oz on the Sherlines. All this is great to know. I can't wait to start to move an axis and see how it works ! Dave > > Assume that the motor has a top speed of 2000rpm and is geared for a top > speed of 200IPM. This gives 10 revs/inch. > > Assuming 100% transmission efficiency the thrust available would be 250 > * 2 * pi * 10 = 15707 lbs. If your gantry weighs 100 lbs you would have > an acceleration of 157g > > If you want a smaller driver than Gecko or Rutex then IMService have a > 30V 5A servo driver > <http://www.cadcamcadcam.com/index.asp? PageAction=VIEWPROD&ProdID=11> > > I think somewhere between 20 and 30 in-oz with a top speed of 2000 - > 3000 rpm would be ideal for a plasma cutter. > > Les > > >We are obvously talking different types of machines. For a plasma > >cutter with a 4 ft table, I would expect that something on the order > >of 250 inch pounds to move the gantry, but double that for higher > >speeds ? > > > >It appears to me that those motors are very light ??? > > > >I was assuming that shotting for more than 20 watts was in order ? > > > >What driver would be best ? The Rutex and Geckos shoot for 70 plus > >volts and some of the links show 9 volts.... Is there a lower cost > >driver that would handle the smaller motors for half the price ? > > > >Dave > > > > > > > > > > > > > > > > > > > >Addresses: > >FAQ: http://www.ktmarketing.com/faq.html > >FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ > >Post Messages: [EMAIL PROTECTED] > > > >Subscribe: [EMAIL PROTECTED] > >Unsubscribe: [EMAIL PROTECTED] > >List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] > >Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [Moderators] > >URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO > > > >OFF Topic POSTS: General Machining > >If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble. > >http://www.metalworking.com/news_servers.html > > > >http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list. > > > >NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........ > >bill > >List Mom > >List Owner > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > Addresses: FAQ: http://www.ktmarketing.com/faq.html FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ Post Messages: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [Moderators] URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO OFF Topic POSTS: General Machining If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble. http://www.metalworking.com/news_servers.html http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list. NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........ bill List Mom List Owner Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
