On 12/10/2013 4:55 PM, Stephen Dubovsky wrote: > On Tue, Dec 10, 2013 at 1:50 PM, Dave Cole <linuxcncro...@gmail.com> wrote: > >> I've got an Erickson QC30 on my Bridgeport CNC mill. >> R8 does not maintain any accurate Z reference after a tool change. >> > Why? R8 uses a taper angle of 16.85deg. NMTB/QC30 uses 16.5943deg [both > from wikipedia]. Both of them the taper face is the gauge line (they don't > seat on a flat face or anything.) Both have 1.25" max taper diameters. > They are basically identical. So if you can get repeatable pull/torque > both should seat just as repeatably. > > SMD > ------------------------------------------------------------------------------
Oops.. you are exactly correct. I was thinking about something else. Thanks for the correction. I was happy to get the Ericson spindle on my Bridgeport since I didn't want to have to climb to the top to get to a drawbar. Being able to stay on the floor is an advantage and no need for a power drawbar. One less thing to screw up. Dave ------------------------------------------------------------------------------ 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
