On Mon, 2007-03-19 at 10:54 -0400, John Kasunich wrote: > Other people don't like that "unwinding", and would rather have the > wheel "slip" when you spin it too fast. If we make the wheel slip, you > don't have to worry about overrun, but you also can't trust the dial > on the wheel anymore.
The only commercial machine I've ever run that would "unwind the spring" is a Bridgeport (Boss 8). This did not add to it's charm ;). Also, what if you jog past a soft limit? The wheel is then out of sync anyway. How about this: 1. An axis is stationary. 2. The jog wheel function for that axis is enabled. 3. An "in sync" light turns on. 4. The operator turns the wheel & the axis moves. 5. If the wheel gets ahead of the axis, the "in sync" light goes out to let the operator know the wheel scale is off. 6. If the wheel stops turning, the axis stops moving ASAP. Perhaps the wheel should be electronically geared to the axis, but only slip if axis max acceleration is violated. Matt PS. The "in sync" light could be a cool backlight on the jog wheel assembly itself :). ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
