On Tuesday 19 May 2015 10:41:56 dave wrote: > Years ago I made a sheave for poly-v to go on my Jet lathe. > Used a kennemetal insert. Don't remember which pitch; 0.092 or .185. > Both sheaves were aluminum and seem to be holding up well. > Never any sign of slippage. > The prolem here is that these pulleys will be 2 speed, 2 each 1/2" thick sheets of moderately hard alu, superglued into a 1" wide workpiece that I intend to make a pair of 5 groove j pattern pulleys using the edge of each sheet. When cutting the smaller pulley, the side of the v type tool holder will cut away 1/2 the thickness of the larger pulley. So I am in the process of making a 5/16 tool whose tip angles are correct, but offset to the left so only about .04" of the V is on the left side of the tool. Tool holders that I have found for v-chips all hold the chip centered in the end of a 12mmx12mm or bigger tool.
But it appears I will have to make an arbor to hold a thick brass disk, and annoint it with diamond paste, the big dremel diamond wheel, trying to remove .006" per hour, is definitely bowing which is reducing the side heel clearance to zip or less despite the fact that the rotary table holding the tool is tilted forward a good 10 degrees. Tomorrow I'll reverse the tool in the chuck, which should make that bowing work for me. I also think I'll shoot for a 35 degree included angle rather than 40. So I'll start at the scrap metal place & see if I can find a sheet of 1/8 or even 1/4" brass to make the diamond paste impregnated disk. And order some diamond paste to charge it with. Who has a good price on that stuff? > On 05/18/2015 04:29 AM, Gene Heskett wrote: > > On Monday 18 May 2015 05:50:40 andy pugh wrote: > >> On 18 May 2015 at 10:42, andy pugh <[email protected]> wrote: > >>> This data book > >>> http://www.contitech.de/pages/produkte/antriebsriemen/antrieb-indu > >>>st rie/download/TD_Multirib_de_en.pdf > >> > >> This also says: "For drives with a ratio >= 3 it is possible to use > >> a flat pulley for the larger pulley" which might save some effort. > > > > I saw that. Looks like that would simplicate this a bit. Thats a 1" > > on the motor. 5" on the spindle might be just what the Dr. ordered. > > > > I saved that catalog, much design info in one 73 page tome. > > > > Thanks Andy. > > > > Cheers, Gene Heskett > > ---------------------------------------------------------------------- >-------- One dashboard for servers and applications across > Physical-Virtual-Cloud Widest out-of-the-box monitoring support with > 50+ applications Performance metrics, stats and reports that give you > Actionable Insights Deep dive visibility with transaction tracing > using APM Insight. > http://ad.doubleclick.net/ddm/clk/290420510;117567292;y > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
