I understand what you're looking for, criteria which determmines a good or bad finger. I have not found anything as cut and dried at that, we just eyeball them. If they are very bad they should stick out like a sore thumb. We check for them each shift. A few bent fingers will do a lot of damage to finger cleaners, guards and so on.
Bent fingers also increase the chances of flooded boards, especially random flooded boards. Example, when an assignable cause is sought to a particular flooded board, no one knows why it happened, the 50 assemblies before and after it were fine, the machine must be broke, when in fact one assembly got loaded on two particularly bad fingers. You can end up chasing your tail on finding something like this.
Fix them fingers early and often, Boca
reply »