I. Fault definition

Fault: The integrated transfer machine loses the specified function or its performance exceeds the specified limit.

Associated failure: The failure caused by the quality defect of the integrated transfer machine when it is used under specified conditions.

Unrelated faults: Faults other than related faults are caused by misuse, improper maintenance or other external factors.

Intermittent fault: After the integrated transfer machine fails, it can recover its functions or performance indicators within a limited time without being repaired.

Fatal fault: A fault that seriously endangers personal safety or causes significant economic losses.

Two.integrated transfer machine fault counting principle

1. Each fault of the integrated transfer machine shall be classified according to associated fault and non-associated fault. If the fault is related, each fault is counted as one fault. Unrelated failures should not be counted.

(2) If the machine tool has a number of function loss or performance indicators exceed the specified limits, and it cannot be proved that they are caused by the same cause, each is judged as a fault of the machine tool, if it is caused by the same cause, it is judged that the machine tool only produces one fault.

3. If the machine has a loss of function or performance indicators that exceed the specified limits, and they are caused by two or more independent causes of failure, the number of independent causes of failure is judged as the number of machine failures.

4. If the machine tool has the same intermittent failure mode several times in the same part, only one fault is judged to have occurred on the machine tool.

5. The parts that reach the specified life period, the replacement of the wear parts and the damage of the extended use are not counted according to the fault.

6. When the fatal failure of the machine tool occurs, if it is a related fault, it is immediately prescribed as a reliability failure.

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