Poka-Yoke Flashcards
technique can be applied to any industry or indeed any situation where there is potential for human error.
Poka-Yoke
The fundamental purpose is to prevent errors that cause defects.
Poka-Yoke
a preventative form of quality control since errors are detected and then rectified before they occur.
Poka-Yoke
What are the 3 levels of Mistake-Proofing?
1.) Detection Based - Focuses on keeping the defective product from reaching the next operation, or the customer.
2.) Facilitation - Sometimes referred to as the warning level as it provides a notification (Light, Sound, etc.) to the operator that a defect has occurred.
3.) Prevention Based - The highest level of Mistake Proofing and encompasses all controls implemented to prevent the defect from occurring. Therefore, non-compliant parts cannot be produced.
What are the 2 Poka-Yoke Device Approaches?
1.) Control Approach
2.) Warning Approach
Which Poka-Yoke Approach senses a problem and stops a line or process so that corrective action can take place immediately to avoid serial defect generation?
Control Approach
Which Poka-Yoke Approach signals the occurrence of a deviation through an escalating series of buzzers, lights, or other warning devices?
Warning Approach
What are the 5 Poka-Yoke Device Methods?
1.) Contact Method
2.) Fixed-Value Method
3.) Motion Step Method
Detect any deviation in shapes, dimensions, forms, position or other physical characteristics through mechanisms that are kept in direct contact with the part.
Contact Method
Used in operations, where the same activities are repeated. Employs automatic counters or sensors to control the number of moves, rate, length and other critical operating parameters.
Fixed-Value Method
Useful for processes requiring several different activities performed in sequence by a single operator. Ensures that the operator does not perform a step that’s not part of the normal process.
Motion Step Method
What are the 6 Principles of Poka-Yoke?
1.) Elimination
2.) Prevention
3.) Replacement
4.) Facilitation
5.) Detection
6.) Mitigation
Which Principle of Poka-Yoke redesigns a product or process so that a particular step is no longer necessary (the most preferable solution)?
Elimination
Which Principle of Poka-Yoke engineers a product or service so that it is virtually impossible for an individual to make a mistake?
Prevention
Which Principle of Poka-Yoke substitutes a process with a more reliable option to lessen the chances of an error occurring?
Replacement
