On 10/30/2012 11:54 AM, John Stewart wrote: > I DO LIKE the idea of the Tormach Tooling System
I just received my YinSheng Manufacturing ER-20 collet holders. They have a .750" shaft on the top and the TTS style ring with rebated top to Z locate on the bottom of the spindle. Essentially, this turns an R8 machine into a TTS machine for repeatable Z height and quick tool changes. The R8 adapter stays in place and the TTS tools drop out the bottom. The YinSheng ER-20 collet holders look very nice. Good surface finish, nice and even black oxide in places. Overall, they have a fairly high quality look to them. Not quite top shelf, but just a little below that. The quality is a pleasant surprise, considering that I paid $157 for ten of these, including three day air mail delivery from China. Collets sold separately. These don't have the groove to hang them in an automated tool changer, and the top of the 3/4" shaft isn't tapered to aid ATC insertion, but either feature could be easily added. Less than $16 each seems like a great deal, considering these usually sell for a little under $60 each. Added Bonus: They're cheaper to replace than a keyless Jacobs chuck when you crash your machine. :-) I'm going to get ten more just as soon as I verify some critical dimensions and measure the runout. They're considerably less expensive than some people's set screw retained end mill holders! http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251139490102 I'm also impressed that I ordered this Saturday at 1:59 AM and they were delivered by DHL on Tuesday, mid morning. My goal is to have every tool that I can in a quick change ER-20 collet holder. I'll have one keyless chuck with a TTS base (en route from Tormach) for the occasional odd size drill bit, but the tools I use most for prototyping and the tools I use for my short run manufacturing will be in an ER-20 collet and programmed into a tool table. Next up... the power draw bar. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
