On Tue, 12/10/13, Kirk Wallace <kwall...@wallacecompany.com> wrote: My random thoughts. I have just started using the R8/Tormach toolholding system and find it far more convenient than plain R8. Changes are as fast as grab a wrench, loosen draw bar enough to slide tool holder out, put next holder in, tighten, done. It features repeatable Z offsets, and offsets can also be set off the machine without a special tool holder holder. A power draw bar really isn't needed unless one has an automatic tool changer. The only down side might be that R8 is not as strong as 30 taper, but the Tormach version is stronger than plain R8. I would, given a large budget, prefer 30 or 40 taper with a power draw bar. I believe a Quick Change spindle can be drilled to use normal (CAT, BT, NMTB) taper holders with a draw bar. ----------------
The quick change spindle I got is drilled for a drawbar so the QC nut can be removed to use holders that don't have the right flange. It also has screws around the sides which are supposed to protrude in enough so the nut can't back off too far, which makes it easier to insert and remove holders. Put the wrench on, pull about 1/3 turn to the stop, swap tool then flip the wrench around and push it back. I'll need to replace those screws if I want that to work. Works OK without the stop. The neat bit of an NMTB taper is any other 30 (or 40 or 5) taper holder will work if you have a drawbar with the right thread. Even collets for a Kearney and Treker 2D would work, though they don't have notches for the drive lugs. ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
