Pokayoke

Poka-yoke
Poka-yoke (ポカヨケ?) [poka joke] is a Japanese term that means "fail-safing" or "mistake-proofing". A poka-yoke is any mechanism in a lean manufacturing process that helps an equipment operator avoid (yokeru) mistakes (poka). Its purpose is to eliminate product defects by preventing, correcting, or drawing attention to human errors as they occur.[1] The concept was formalised, and theterm adopted, by Shigeo Shingo as part of the Toyota Production System.[2][3] It was originally described as baka-yoke, but as this means "fool-proofing" (or "idiot-proofing") the name was changed to the milder poka-yoke.
More broadly, the term can refer to any behavior-shaping constraint designed into a product to prevent incorrect operation by the user
Implementation in manufacturing
Poka-yokecan be implemented at any step of a manufacturing process where something can go wrong or an error can be made.[4] For example, a jig that holds pieces for processing might be modified to only allow pieces to be held in the correct orientation,[5] or a digital counter might track the number of spot welds on each piece to ensure that the worker executes the correct number of welds.[6]
Shigeo Shingorecognized three types of poka-yoke for detecting and preventing errors in a mass production system:[2][4]
1. The contact method identifies product defects by testing the product's shape, size, color, or other physical attributes.
2. The fixed-value (or constant number) method alerts the operator if a certain number of movements are not made.
3. The motion-step (or sequence) methoddetermines whether the prescribed steps of the process have been followed.
Either the operator is alerted when a mistake is about to be made, or the poka-yoke device actually prevents the mistake from being made. In Shingo's lexicon, the former implementation would be called a warning poka-yoke, while the latter would be referred to as a control poka-yoke.[7]
Shingo argued that errors areinevitable in any manufacturing process, but that if appropriate poka-yokes are implemented, then mistakes can be caught quickly and prevented from resulting in defects. By eliminating defects at the source, the cost of mistakes within a company is reduced.

Poka-yoke
Poka-yoke (ポカヨケ ? ) [broma poka] es un término japonés que significa " La autoprotección "o" error-corrección ". A poka-yoke is anymechanism in a lean manufacturing process that helps an equipment operator avoid ( yokeru ) mistakes ( poka ). Un Poka-Yoke es cualquier mecanismo en una producción ajustada proceso que ayuda a evitar un operador de equipo (yokeru) errores (poka). Its purpose is to eliminate product defects by preventing, correcting, or drawing attention to human errors as they occur. [ 1 ] The concept was formalised,and the term adopted, by Shigeo Shingo as part of the Toyota Production System . [ 2 ] [ 3 ] It was originally described as baka -yoke , but as this means "fool-proofing" (or " idiot-proofing ") the name was changed to the milder poka-yoke . Su objetivo es eliminar los defectos del producto objeto de prevenir, corregir, o llamar la atención sobre los errores humanos que se producen. [1] Elconcepto se formalizó, y el término adoptado por Shigeo Shingo , como parte del Sistema de Producción Toyota . [2] [ 3] Fue descrito originalmente como baka -yoke, pero ya que esto significa "engañar a prueba" (o " a prueba de idiotas ") se cambió el nombre a la más leve poka-yoke.
More broadly, the term can refer to any behavior-shaping constraint designed into a product to prevent incorrectoperation by the user. [ citation needed ] En términos más generales, el término puede referirse a cualquier limitación de elaboración de comportamiento en un producto diseñado para evitar la operación incorrecta por parte del usuario.
Aplicación en la fabricación de
Poka-yoke can be implemented at any step of a manufacturing process where something can go wrong or an error can be made. [ 4 ] For...