In this thesis, the measurement system was replaced, which improved the accuracy of the measurement and gave us a more realistic picture of the capabilities of the plastic injection process. The goal of the thesis was to select a suitable measurement system with the help of analysis of the measurement system and to confirm the choice with statistical control of the process. The thesis first presents the theoretical foundations of the quality assurance methods (MSA, SPC) that we used. The following is a short presentation of the product on which due to an inadequate index of the ability of the manufacturing process, we performed a measurement system analysis (MSA) and proved that the existing measurement system is not capable of providing adequate measurements. We chose a new measurement system and re-performed the MSA analysis and statistical control of the process.
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