On Sunday, November 27, 2011 11:52:34 AM andy pugh did opine: > On 7 November 2011 04:32, Kent A. Reed <knbr...@erols.com> wrote: > > Once you've settled on an approach I hope you'll provide pictures for > > the rest of us to ooh and aah over :-) > > I have been thinking about this, and settled down to design a purely > mechanical High-Speed spindle for my milling machine. It has a BT30 > spindle and, like many oldr machines, a range of speeds, all of which > are slow. In this case the are speeds from 46 to 1200 rpm. > http://www.bodgesoc.org/HS_Spindle.html
Clear, empty page displayed here. Error: is not copy/pastable. Something about an uncaught exception in line 363. > It looks a bit of a mess in HTML, but if you download the PDFs and > view them in Adobe Reader they look a lot better, and you can > pan/tilt/rotate, change to wireframe etc. > It is based on a supercharger I saw at work some time ago. It is > purely friction-drive (for smoothness, and cheapness). The outer > (green) spring-band is a very tight fit and clamps the (off the shelf) > 6204 bearings hard against the ER11 collet chuck 8mm shaft ($10 from > eBay CTS Tools). > The outer band needs to be held stationary by some peg/bracket/arm > which is not shown. Also not shown is the nose-seal holder (which also > tensions the bearings and depends on the exact design of the collet > chuck and how the collet chuck is located in the nose bearings (no > idea, possibly a split-clamp and jack-screws, maybe just a loctite-ed > collar) > > The design shown has a 104:8 ratio, so for a 1000rpm input speed the > output would be 13,000 rpm. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> The Ancient Doctrine of Mind Over Matter: I don't mind... and you don't matter. -- As revealed to reporter G. Rivera by Swami Havabanana ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
