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Quality assessment of pneumatic linear drives
Pecl, Tomáš ; Jankových, Róbert (referee) ; Budík, Tomáš (advisor)
This Master’s thesis deals with the evaluation of quality pneumatic linear drives. The theoretical part describes the problems in the field of pneumatic cylinders and statistical methods to perform the analysis. The practical part includes the execution and evaluation of the statistical analysis of the measurement process and pneumatic cylinders, also brings recommendations to optimize the measurement process. The methods used included analysis Gage R & R, Analysis control charts and data analysis using the process capability. The study was made for the purpose of improving test equipment Norgren Ltd. Used computer programs was Minitab Statistical Software and MS Excel.
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Statistical Process Control
Hudečková, Eva ; Fiala, Alois (referee) ; Koška, Petr (advisor)
The master´s thesis deals with the problem of statistical process control. The theoretical part describes the basic quality tools and new quality tools, as a tool for collecting, recording, classifying, and analyzing data. The knowledge gained from the theoretical part are used to describe processes in the company Heat Transfer Systems s.r.o., analyze sticking points, control plans updating and to statistical process control in the organization.
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Use of Statistical Methods for Data Processing
Hladiš, Lukáš ; Ing.Churý Tomáš (referee) ; Doubravský, Karel (advisor)
This thesis aims to evaluate a new manufacturing process by using statistical methods SPC. In the theoretical part provides the basic methods and rules applied in the assessment of control charts. The next part evaluates the current state of the company Hanhart Morkovice s.r.o. analysis and production of coils. The analytical part deals with control charts for reference and quality characters using statistical software process capability indexes and control charts. Based on information from the analytical part, conclusions are drawn and designed for long-term steps using established methods of SPC for quality characters.
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Implementing SPC in the Production Process
Dostál, Petr ; Macháček, Martin (referee) ; Bartes, František (advisor)
The thesis deals with implementing of statistical process control (SPC) on CNC cut center into the mechanic production. One part of the project is engaged in theoretical information gathering, process monitoring and data collection. Second part deals with stabilization, regulation and improvement of the process using right statistical instruments. As a result is implementing measuring station from where will be the process data transferred to a server and evaluated. On the basis of that is possible to implement a correction in the right time if the process isn´t stabilized. The main objectives of the thesiss are cost reduction, scrap reduction and modernization of the process.
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Statistical Process Control with SW Support
Michálek, Jiří ; Král, J.
The contribution deals with the analysis of situation in a manufacturing process by application of SPC methods.The approach is described by use of methodological schemes together with attention to problems that can occur by noncorrect usage of statistical tools. The contribution contains also an illustrative example of data analysis by application of a suitable software.
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Regulační diagramy s rozšířenými mezemi a způsobilost procesů
Michálek, Jiří
The assumptions about behaviour of observed quality variables demanded by classical Shewhart diagrams are not often satisfied as practice shows. These assumptions concern Gaussian density function whose parameters, i.e. mean value and dispersion must be constant in time. As this demand need not be satisfied in practice therefore processes with changing mean value or dispersion have begun to analyse. This fact is changing the statistical control and capability of such manufacture processes.
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