engenharia da qualidade - 6 sigma
TRANSCRIPT
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Alumnos: César G. J. Nader Nicolás Cabezudo García
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¿Lo que és el ?[Six Sigma is], “a program to accelerate profits and customer satisfaction by systematically eliminating the root cause of critical defects/errors in all processes, or by creating new, more effective processes.” -Brassard & Ritter,
Sailing Through Six Sigma
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?¿Cómo y de dónde surgiu el
Creado 1981
Aperfeccionado 1996
Difundido>2000
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Time line....
¿ Y antes de eso?
1910’s1980’s
1950’s2000’s
“Demanda Manufaturada”
Competición
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¿ Quales los objetivos del ?•Higher profits•Rising product value•Limited variations•Waste Reduction
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¿ Como funciona el ?
“Organizations that cannot describe their processes in the form of numbers cannot truly understand their processes. If they don’t understand their processes, they cannot control them.”
-Dr. Mikel Harry
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¿Porque el 6σ y no el3Delta
?El programa requiere el uso de métodos estadísticos donde el 6σ tiene su significado…
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Rango de Desviación % de Acertos Defectos por Millón de Oportunidades (DPMO)
-1σ hasta +1σ 68,2689492% 317310,508
-2σ hasta +2σ 95,0004210% 49995,790
-3σ hasta +3σ 99,7300204% 2699,796
-4σ hasta +4σ 99,9936658% 63,342
-4,5σ hasta +4,5σ 99,9993205% 6,795
-5σ hasta +5σ 99,9999427% 0,573
-6σ hasta +6σ 99,9999998% 0,002
=1-(2*(1-DIST.NORMP(σ)))
+σ-σ
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Materiales Ambiente
Equipamientos
Método Medición
Trabajadores
Factores
Organizacionales
Facto
res
Tecn
ológ
icos
Proceso y Producto
Dónde estan la fuentes de nuestros defectos?
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Hay que detectarlas...
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Vamos hacer un experimento...
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Seis Sigma - Significado Practico (USA)
99% Conforme20.000 itens de correo perdidos p/hora
Agua no potable durante 15 min/dia
5.000 operaciones cirúrgicas incorretas p/semana
200.000 receitas médicas erradas por ano
Falta de energia eléctrica durante 7 horas por mes
99,99966% ConformeSete itens de correo perdidos p/hora
Água no potable durante 1 minuto a cada sete meses1.7 operações cirúrgicas incorretas por semana68 receitas médicas erradas por ano
Falta de energia eléctrica durante 1 hora a cada 34 anos
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Definir
Medir
Analisar
Mejorar
Controlar
D
M
A
M
C
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Define: important objectives of the project and present processes. Focus on Critical to Quality factors (CTQ)
Measure: main features of the existing process and gather necessary information
Analyze: structure and relationship between reasons and results to assure that all elements and parameters have been taken into consideration
Improve: the current processes to achieve satisfying results
Control: to be sure that the deviations have been corrected before the defects occur
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Estratégias de Implementación:
Workshop com Presidencia y Directoría
Identificación de los CTQ del negócio
Selección de los proyetos iniciales
Selección y entrenamiento de los líderes de proyetos (BlackBelts)
Entrenamientos de “GreenBelts” en todos los setores
Reuniones periódicas
Bonus por resultados
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Resúmen:Desde arriba para abajo...
Estratégias de Implementación
Dedicación Integral
Participan de Proyetos
Directoría: Definen Estrategias
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Questiones Generales
• La Lideranza deve aceptar desafios • 6 Sigma deve estar integrado a la estratégia macro de la empresa
• Deve haver aprendizagen(?) organizacional
• Projetos 6 Sigma devem reduzir costos
• Devem haver especialistas en tiempo integral
• Onus e Bonus para desempeño em Proyetos
• Solamente la estadística no es suficiente
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Un Programa Típico para BlackBelts
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Resultados a longo prazo• • Mais tempo com o cliente ao invés de resolver problemas
isoladamente no escritório;
• • Trabalho proativo ao invés de “apagar o incêndio” através de reação;
• • Confiança de que os pedidos são feitos, cumpridos, entregues e cobrados “sem erros”;
• • Confiança de que o trabalho precedente e posterior é livre de defeitos;
• • Aumento dos negócios com os clientes
• • Menores ajustes à margem operacional para cobrir interrupções do processo.
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