Application of QFD and SPC methods in the processes of design and products manufacturing

Marketing surveys discover that the most successful organizations have to provide products or services that meet customer\´s requirements and are able to fulfill these requirements more consistently than their competition. The continuous communication between organization and its consumers is necessary to reach for this state. It is reality that the customers determine the quality of product, nor designers or production technologists. They have to design and produce the faultless product that (in floating market conditions) meets all requirements of consumers. It requires the systematic approach to the integration of "Voice of Customer" into the design and production activities and received strategic decisions. The effective ways of quality assurance are based on approach of prevention activities focused on wasted expenditure during production or services providing. This prevention can be assured through the continuous information obtaining about the behaviour of the manufacturing process and their analysis. The aim is to have the products or provided services with required characteristics. Selected methods and tools of quality management are used for this purpose, making for efficient transformation of customer\´ s requirements into the other phase of design and product development and following realization process. The methodology, which brings benefit from the combination of Quality Function Deployment (QFD) and Statistical Process Control (SPC), is presented in this article. The QFD is exploited here with the aim of the customer\´s requirements identification and their transformation into the designed product and process. In addition, in contradistinction to common using of this method, described approach supposes the dynamic output updating from QFD during very production on the basis of customer\´s feedback. It should lead to quality improvement of product provided as well as to the customer\´s satisfaction rising. The SPC allows to find out the significant ab- - normalities from the specified value of chosen product characters at the time and it is also able to maintain the key process parameters, gained by the transferring from identified and updated customer\´s requirements, on required and stable state in the long term. It means, the process provides the products that comply with the performance quality features defined by the customers.