La Metodologia Six Sigma | Il Processo di Six Sigma | Il Modello di Six Sigma

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Che cosa è il Six Sigma? Descrizione

Il Six Sigma è una metodologia di quality management che fornisce ai business strumenti per migliorare la capacità dei loro processi di business. L'aumento delle performance e la diminuzione della variazione dei processi hanno condotto ad una riduzione dei difetti e ad un miglioramento dei profitti, del morale degli impiegati e della qualità del prodotto. È una misura della qualità e un programma di miglioramento a cui ha aperto la strada Mikel Harry e Motorola. Si basa  sul controllo di un processo fino al punto dei six sigma (scarti quadratici medi) da una linea centrale, o su 3.4 difetti per un milione di articoli. Include l'identificazione di fattori critici per la qualità, determinati dal cliente. Riduce la variazione dei processi e le capacità di miglioramento, aumenta la stabilità ed i sistemi di design per supportare l'obiettivo dei six sigma.



Six Sigma 6 ΣIl modello di Six Sigma è un metodo altamente disciplinato che può aiutare le aziende a focalizzarsi sullo sviluppo e sulla fornitura di prodotti e servizi quasi perfetti. È basato sul lavoro statistico di Joseph Juran, un pioniere statunitense del quality management originario della Romania. La parola “Sigma„ è un lettera greca usata per un termine statistico che misura quanto un dato processo devia dalla perfezione (scarto quadratico medio). Se il numero dei sigma è più alto, si è più vicini alla perfezione. Un sigma non è molto buono; sei sigma definiscono soltanto 3.4 difetti su un milione. L'idea di fondo del Six Sigma è che, se potete misurare i vostri “difetti„ presenti nel processo, potete calcolare sistematicamente come eliminarli. Così potete quasi “azzerare i difetti„.

L'origine giapponese del Six Sigma può ancora essere vista dal sistema delle “Cinture„ che utilizza. Se siete novizi del Six Sigma ed andate ad un corso di formazione base, otterrete una cintura verde. Chiunque abbia la responsabilità di condurre un team di Six Sigma è denominato cintura nera. Infine c'è uno speciale gruppo d'elite denominato Master Black Belts [Maestri delle Cinture Nere] che ha la funzione di sorvegliare le Cinture Nere.


Cinque fasi del Six Sigma. Processo

Tipicamente, un processo di Six Sigma ha le seguenti cinque fasi:

  1. Definizione. La prima fase di qualsiasi progetto di Six Sigma è quella di chiarire il problema e limitare lo scopo in modo tale da realizzare obiettivi misurabili nel giro di alcuni mesi. Dopodichè, si assembla un team per esaminare dettagliatamente il processo, per suggerire miglioramenti e per implementare questi suggerimenti. Nel mondo della produzione, i manager di progetto ed i loro garanti cominciano tipicamente definendo cosa costituisce un difetto per poi stabilire un insieme di obiettivi destinati a ridurre l'occorrenza di tali difetti.
  2. Misurazione. Alla seconda fase di un progetto di Six Sigma, il team riunisce i dati e li prepara per un'analisi di alto livello.
  3. Analisi. Una volta che si è tracciato e documentato un processo ed è stata verificata la qualità dei dati di supporto, il team di Six Sigma può cominciare l'analisi. I membri del team cominciano solitamente dall'identificazione dei modi in cui la gente non riesce ad agire come è necessario, o dei modi in cui la gente non riesce ad assicurare un controllo efficace in ogni fase.
  4. Miglioramento. Suggerire, decidere e implementare i miglioramenti.
  5. Controllo. Nella fase finale di un progetto di Six Sigma, il team crea i controlli. Questi permettono all'azienda di sostenere ed estendere i miglioramenti.

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Forum sul La Metodologia Six Sigma.


🔥 NUOVO Metodi di Progettazione Avanzata
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Identifying Critical Characteristics
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Add Standardization to DMAIC Phases in Six Sigma (DMAICS)
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Six Sigma is a Story!
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Differentiating Six Sigma from TQM
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Evaluating Six Sigma Project Leaders
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Quality Lessons in Dealing with Contractors
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Six Sigma Manufacturing Example
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Best Practices Lean Six Sigma in Social Care
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Six Sigma Dictionary - Six Sigma Terms
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Six Sigma in Textile / Confection Industry
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6 Sigma....Frame period
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Six Sigma Implementation Process
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6 Sigma in Construction Industry
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Good Practitioner Books on Lean - Six Sigma, S&OP?
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Sustaining Momentum of Process Improvement over Time
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Organizational Development + Six Sigma or Lean
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Should Six Sigma start after Lean Implementation?
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Six Sigma In Inbound Call Center
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Lean Management in Retail
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Six Sigma Black Belt Certification
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Six Sigma Approach Part I
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Quality Critical Factors
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Disadvantages of Lean Six Sigma. Drawbacks
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Lean 6 Sigma in Laboratories
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Six Sigma Department
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Next Step after Voice Of Processes have been Defined?
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Applying Six Sigma to Landscape Architecture
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3 Additional Six Sigma Levels
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The Basis of Six Sigma? Statistics and Discipline
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Six Sigma Organization Structure
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Six Sigma in an R&D context
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The 5 x Why Method (The 5 Whys)
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Focus of Six Sigma: The 6 Rights
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Statistical Process Control (SPC)
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Is Six Sigma Enough? (To Improve the Quality Level of an Organization...)
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Six Sigma DMAIC and DMADV
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Evaluating Six Sigma Projects
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Six Sigma Requirements
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Hypothesis Testing in DMAIC Projects
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Six Sigma in Medical Transcription
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Six Sigma Implementation Roles
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Six Sigma for Retail
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The Cost of Poor Quality: Tools for Effective Control & Reduction
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Six Sigma Effectiveness
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Six Sigma in Passengers Handling
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Six Sigma Implementation Principles

Implementing Six Sigma Succesfully
In the article 'Six Sigma - the route to business excellence' (Management Services, Winter 2005), John Morgan argues tha (...)

Six Sigma Approaches / Steps Compared

DMAIC, DMADOV, DMAEV, DABTL
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Good Six Sigma Project Management

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Hypothesis Testing in Lean Six Sigma Explained

SS Hypothesis Testing
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6 Management Responsibilities in 6 Sigma

Six Sigma Implementation, Best Practices
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Human Sigma

Improving Employee-Customer Encounters
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Six Sigma in Service Organizations

Benefits
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How Six Sigma Supports TQM

TQM, Six Sigma
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Six Sigma Lessons Learned

Process Improvement of Six Sigma Projects
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Six Sigma in Service Organizations

Challenges and Difficulties
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3 Critical Success Factors for Six Sigma Projects

Getting results out of a 6 Sigma project
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3 Six Sigma Variants

Differences in Six Sigma Approaches
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Measurement Systems Analysis (MSA)

Testing Measurement Systems, Improving Measurement Systems, Assessing Measurement Systems
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Generic Six Sigma Project Ideas

Identifying LSS Projects
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Design for Six Sigma

Supply Chain & Quality
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How to Make Value Stream Map? Tips

Making a Value Stream Map, Creating a Value Stream Map
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DMAIC Approach is Sequential, But...

Six Sigma Implementation
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The DMAIC Process Step by Step Example

Six Sigma Implementation, DMAIC Process
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Lean Six Sigma Programs

Driving Innovation
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CCR and CTQ

Six Sigma Method
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Six Sigma Improvement Team Composition and Procedure

Six Sigma
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Appropriate Sample Sizes in Six Sigma

Six Sigma
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Radical Innovations

Assessing Your Level of Preparedness
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Control Charts and Control Limits

Controlling the Process
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