Published
2011-05-01
ANÁLISIS DE CAPACIDAD GRÁFICO PARA UN PRODUCTO CON ESPECIFICACIONES BILATERALES
PROCESS CAPABILITY ANALYSIS PLOT FOR A PRODUCT WITH BILATERAL SPECIFICATIONS
Keywords:
control estadístico de procesos, indices de capacidad de procesos, mejoramiento de procesos (es)Process capability indices, Process improvement, Statistical process control (en)
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El análisis gráfico de la capacidad de un proceso multivariado suministra información crítica acerca de la distancia que existe entre la media y su valor objetivo, para cada uno de los procesos; así como la variabilidad de cada uno de ellos. Esta información provee luces para mejorar la capacidad de todos los procesos que hacen forma del producto. En los gráficos existentes para analizar la capacidad de un producto, se asume que cada uno de los procesos que conforman el producto son independientes, tienen distribución normal y presentan tolerancia simétrica. En este artículo, proponemos un método gráfico para evaluar la capacidad de un producto conformado por procesos independientes, bajo cualquier distribución continua para tolerancias simétricas o asimétricas. El gráfico propuesto suministra información acerca de la localización y dispersión de cada una de las características que conforman el producto. Se presenta un ejemplo que ilustra el efecto de la asimetría sobre la capacidad de los procesos.
A multi-process performance analysis plot based on process capability indices has been developed to analyse the manufacturing performance for multiple processes, which conveys critical information regarding the departure of the process mean from the target value and process variability, and provides a guideline for capability improvement. Existing performance analysis plots usually assume normal distributions and symmetric tolerances. In this paper, we present a graphical method to evaluate the process capability of a product composed of independent multiple processes with nominal-thebestspecifications and symmetric or asymmetric tolerances. The proposed plot aims to get information about the location and spread of the studied characteristics which can follow any continuous distribution. An example showing the effect of processes with asymmetric tolerances on the capability of the product is considered.
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How to Cite
Guevara, R. D., & Vargas, J. A. (2011). PROCESS CAPABILITY ANALYSIS PLOT FOR A PRODUCT WITH BILATERAL SPECIFICATIONS. Revista Colombiana De Estadística, 34(2), 287-301. https://revistas.unal.edu.co/index.php/estad/article/view/29923
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