文档介绍：This file is a brief presentation which addresses some basics of Error Proofing and Poka Yoke.
Mistake proofing.
Selection of process for Mistake proofing.
During the third phase of APQP, identify the processes, where, due to avoidable human errors, the rating of "Occurrence" and/or "Detection" have increased thereby increasing the RPN for the process. Poka Yoke techniques of mistake proofing are applied to these processes in order to lower the ratings of Occurrence and / or detection.
Analysis of plaints also reveals activities which are in need of mistake proofing, in order to achieve 'Zero Defect' level of working. Undertake application of Poka Yoke techniques to these processes.
The selected mistake proofing technique should qualify the following criteria:
Inexpensive.
Based mon sense, preferably of the operator or the 1st line employee.
It MUST eliminate Occurrence / Detection of the problem at the source itself.
Occurrence oriented Poka Yoke should follow the procedure as below:
A) First classify the source of 'Occurrence' as follows:
Required action is NOT performed or is performed incorrectly.
Undesired action is exercised.
Information essential for performing the action is mis-interpreted.
Mistake occurs due plexity.
B) After having classified the source, apply one of the following techniques, as appropriate, to prevent the occurrence:
Use of 100% prevention devices such as Fouling Pins, Contoured locators or templates, Proximity or Photo-electric sensors, Limit or Micro switches, Warning lights or Buzzers, Pressure transducers.
Design to modify to ensure that in assembly the parts shall not join if aligned will not run if operators' hands or feet are not outside or if the job & tooling are not in right position.
These techniques should be integral part of the devices are placed sufficiently close to where the mistakes occur, providing fast feedback to the operator, of mistakes occurring.