this is on my todo list for my lathe too how did your cad turn out , interesting too
On 7 December 2015 at 15:46, andy pugh <[email protected]> wrote: > I have a lathe with a moderately large spindle. I want to drive an > encoder (well, actually, a resolver) at a 1:1 ratio from this. > > The obvious way is with a 1:1 gear set, or a belt, but that does > involve really quite a large gear on the weeny resolver shaft. > > I have been thinking about a 200:1 worm drive for an auxilairy > resolver for absolute Z-axis positon feedback (I want to eliminate Z > homing moves) and it occurred to me to wonder if a 1:1 ratio worm > drive is possible, with the wheel much smaller than the worm. > > So, I modelled a 10-start worm and a 10-tooth wheel in CAD, and it > wasn't long before I realised that I was designing something that I > have seen before. A speedometer drive. > > http://www.ebay.co.uk/itm/251440255353 > > Now to find one with the right ratio and bore size. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > > ------------------------------------------------------------------------------ > Go from Idea to Many App Stores Faster with Intel(R) XDK > Give your users amazing mobile app experiences with Intel(R) XDK. > Use one codebase in this all-in-one HTML5 development environment. > Design, debug & build mobile apps & 2D/3D high-impact games for multiple > OSs. > http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140 > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- The information contained in this message is confidential and is intended for the addressee only. If you have received this message in error or there are any problems please notify the originator immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. This mail and any attachments have been scanned for viruses prior to leaving the RcTechnix network. RcTechnix will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or as a result of any virus being passed on. RcTechnix reserves the right to monitor and record e-mail messages being sent to and from this address for the purposes of investigating or detecting any unauthorised use of its system and ensuring effective operation. (c) RcTechnix ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
