Detecting an unsecured state of a mandrel

摘要

A mandrel position analyzer (108) in an imaging device (100) includes a head stock (144) for a first side of the mandrel; a tail stock (104) for a second side of the mandrel; a first encoder (212) attached to the head stock adapted to measure first signals wherein the first signals are generated by movement of the mandrel; a second encoder (208) attached to the tail stock adapted to measure second signals wherein the second signals are generated by movement of the mandrel; an analyzer (224) which compares measured results of the first signals and results of the second signals; and if the measured results do not match generating an abnormal state of the mandrel signal alarm (260).

主权项

1. A mandrel position analyzer in an imaging device comprising:
a head stock for a first side of the mandrel; a tail stock for a second side of the mandrel; a first encoder attached to the head stock adapted to measure first signals wherein the first signals are generated by movement of the mandrel to form a first set of results, wherein the first set of results represents a rotational speed of the mandrel; a second encoder attached to the tail stock adapted to measure second signals wherein the second signals are generated by movement of the mandrel to form a second set of results, wherein the second set of results represents the rotational speed of the mandrel; an analyzer which compares the first set of results to the second set of results; and an alarm; wherein if the first set of results is different from the second set of results, the alarm alerts an operator.