Can somebody explain G76 please. I don't understand the implementation method, in particular the "drive line" mentioned in the manual.
The docs say the sample program g76.ngc shows the method. The figures in that don't make sense for a 1/4x20 thread. The initial position is z.2 z.2 The major diameter of that thread is .2449 ?? Manual says the "drive line" is a safe position outside the thread and also goes from the initial location to the value specified in the Z- value. If so how can that cut an external 1/4x20 thread? (I'm guessing the drive line is the thread major diameter + some arbitrary value set by the op, and is the same as the clearance distance) Was that program written for radius mode? Wouldn't a XZ start point and an XZ end point and a return clearance distance have been more practical? It would appear from the parameters that the G76 doesn't support taper threads - defining the start/end positions make that possible. Steve Blackmore -- ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
