On Mon, 2011-06-27 at 13:41 -0700, For Sale Sticker wrote: > 'leadscrew pitch' (do I just count the number of threads per inch?)
It's barely possible that the leadscrew will have a multiple-start thread, making the linear-motion-per-turn higher than you'd expect from a simple count of the threads-per-inch number. Turn the leadscrew by hand and count the number of threads that vanish / appear at the edge of the stage for each turn: mark a thread, then watch it for one turn. If one thread vanishes / appears, then the leadscrew doesn't have a multiple-start thread. If it has a multi-start thread, then the stage will move more than the threads-per-inch by the number of thread starts. (The Z axis on my Thing-O-Matic has a four-start leadscrew, so I had to puzzle through this mess while figuring out the mechanics...) -- Ed http://softsolder.com ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
