2009/10/27 Mark Cason <farmerboy1...@yahoo.com>: >> For lathe threading you don't need to know it. For tapping you >> do. >> > That part I understand, but, if a spindle is under computer control, > then the computer should already know which direction the spindle is > turning, right?
It knows that it has asked the spindle to reverse, but not that it has yet.. The application is rigid tapping (with a tap in the milling spinfle). The spindle descends at 1 pitch per rev, then reverses and winds back out again. At the point where it stops then reverses the controller needs to be able to know for sure which way the spindle is turning. -- atp ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
