[QUOTE=miljnor] ....So unless you have your guys chained to the machine..../QUOTE]
No I'm not suicidal (in a business sense) yet.
The complexity you bring up will be less likely in our application. The parts only need +/-0.0005 which is less than the initial warmup but the backward drift over lunch break is not enough to worry about.
Your comment about chaining to machines brings up the idea of having a thread titled "Are your operators allowed to wander around while their machine is running?" I figure if you have the confidence to set Power Off at M30 and leave a cycle running at quitting time or if you are doing lights out manufacturing there is no reason to insist that the operator stand there all the time peering through a dirty window. We do production work on a repeat basis on more than 200 different parts using around 600 different programs. For most of my guys it is a case of "same old same old" and I would have a revolt if I didn't let them break up the boredom somehow with cycle times ranging from 2 minutes to 2-1/2 hours.  |