Tuesday 13 November 2018

Six Sigma in manufacturing

Six Sigma method it is assumed that defects in processes occur with some probability, that you can describe the statistical distributions. The purpose of the business at the level of Six Sigma is, therefore, reduce the likelihood of defects to 3.4 (three and four tenths) defect per million opportunities. In this way, the Six Sigma approach can lead to repeatable processes (stability).

The opening of borders for people, capital and goods has sparked increasing competition companies. Articles of low quality and reliability are no longer be buyers. It is the quality of the products has become a priority in the fight.

More and more companies date back to the modern methods, tools and techniques for the design, manufacture and distribution of goods and services, such as SPC, QFD, FMEA, Six Sigma and other. And your company?

Six Sigma is an in-depth understanding of the needs of potential customers, disciplined use of facts, data, statistical analysis to improve and create business processes.

The advantages of the so understood system are:

  • cost reduction,

  • increase productivity,

  • increase in market share,

  • customer retention,

  • reduce drawbacks,

  • changing the culture of the company,

  • the development of a product or service.

The basis for the analysis of processes in this methodology is standard deviation, sigma, also known as the average square deviation. It illustrates the magnitude of variation (natural variation) characteristics of a product or service. Is the measure to determine how efficiently is the process. The higher the sigma level, the better. The sigma level is the ability of a process to perform tasks without defects.

Methodology of Six Sigma in manufacturing enterprise

In order to effectively implement the principle of Six Sigma strategy in your business, you need to create in your organization, the appropriate framework conditions. Their range includes m.in. the appointment of staff to posts of specialists pursuing Six Sigma project. Belts (Black Belts, Green Belts) and the assignment of the corresponding functions:

The Supreme management

Identifies problem areas and the selection of strategic issues to solve, approves the projects undertaken and shall appoint a Champion and Belts.


(a higher Manager) prepares the preliminary cards projects, leads oversight of projects, removes barriers to their implementation and responsible for their success.

Master Black Belts

(Masters of black belts) are experts in the field conducted the project. Lead the team and are accountable to Champion the success of the project.

Black Belts

(Black bars), the leaders of the Six Sigma team are experts in supporting and stimulating the work of project teams. Pass more than 150 hours of training, divided into four parties weekly and distributed within 4 months. In the course of these intensive technical workshop will get acquainted with the DMAIC methodology, useful tools, statistical, and develop your skills to lead a team and project management. In the weeks between the monthly workshops Black Belts learning by doing working on specific projects and receive professional support from the instructor with a certificate and permission Master Black Belt. Black Belts are purely initialization, flying and the implementation of projects aimed at the improvement of processes in the company.

Green Belts

(Green Belts) are members of the team, who they learn problem-solving model adopted, the key tools to support the model and team member roles and responsibilities. The aim of training the Green Belt is to provide them with the skills to support team leader in developing the results of the project to which they were assigned. Members of the development team direct methodology Six Sigma DMAIC process, which.

DMAIC process

Implementation of the Six Sigma methods will you require. DMAIC cycle. DMAIC process complete in the following stages:

  • Stage 1. Define (" Define)-Black Belt identifies the problem and determines its scope.

  • Stage 2. Measure (called. Measure) – specialist maps to the selected process, or system issue, performs the appropriate measurements and estimates how the selected issues.

  • Stage 3. Filter (called. Analyze) – in this step, you analyze the cause of the problem, determines the basic Belt relationship between the obtained key measures of results and the adopted standards.

  • Stage 4. Streamline (ang. Improve) – selects the features of the results that you need to improve.

  • Stage 5. Control (called. Control) – this phase means the documentation of the new process and its statistical monitoring. After a period of time shall be complete again performance evaluation process. Even and depending on the results of the analysis of specialist goes back to previous phases.

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