On 03/04/2013 09:11 AM, dave wrote: > On Mon, 2013-03-04 at 10:09 +0000, andy pugh wrote: >> On 4 March 2013 07:38, Kirk Wallace <kwall...@wallacecompany.com> wrote: >> >>> The dog keys are not installed on the end of the spindle, though there >>> are slots and threaded holes. With a modern VFD on the spindle, it might >>> be easy enough to install the tool with a slight up pressure and rotate >>> the spindle until the the tool engages the keys and seats, but he keys >>> would interfere with the gripper as is is now. So far, the tools seat >>> well enough without using the keys. >> >> It is probably possible to carefully align the spindle for tool-change >> if there is a spindle encoder. >> >> Wikipedia is quite clear on this point, and it matches my understanding: >> "This is a "self releasing" or "Fast" taper. Unlike the more acute >> self holding tapers above, such tapers are not designed to transmit >> torque. This turning effort is carried by driving keys engaging slots >> on the flange." >> >> However I have trouble seeing how you can hold a CAT flange and still >> allow the dogs to engage. BT flanges have a gripper groove which is >> far enough below the keys for there to be no interference. ( >> http://www.bright-tools.com/news_show_79.html) >> There is rather less space on the SK flange. ( >> http://www.morari.it/home/en/products/adjustable-heads/cone-std-din-69871 >> ) so I don't know how those avoid gripper-to-key clashes. >> > The mazak v5 does it all the time. Semi-circular ring with a spring > driven pin to go in the groove. Rotate in, come up, clamp the tool > holder, move down, rotate, come up, go down and to rest position. > The mazak also has a mechanism for dog alignment; on some it is > mechanical on other sensor or encoder driven. > > Sorry I don't have pictures. Maybe tomp has a picture from his fine > collection re' Galesburg. > > HTH > > Dave > >> > > > > ------------------------------------------------------------------------------ > 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_d2d_feb > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users >
Dave, Hi, thanks for thinking of me, All my computers from those days are dead But Fenn did a great job of documenting during that early fest at Roland's. His collection can be seen here http://wiki.linuxcnc.org/cgi-bin/wiki.pl?MazakRetro I went back once later to work by myself, but have no pics now. I sent some to Matt and Ray regarding a sensor for tool change. Hope you are all recuperated! Spring time is comin! regards TomP tjtr33 ------------------------------------------------------------------------------ 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_d2d_feb _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
