Quality estimation of process with usage control charts type X-R and quality capability of process Cp, Cpk

In this paper, the selected problems related of modem quality monitoring and quality control in Polish companies have been presented. It has been found that monitoring of production processes is a necessary element of a company's proquality policy. Such an approach is connected with the continuous improvement of a company. Possibility of usage of statistical techniques of quality estimation process has been discussed. For this purpose, control charts type X-R and also calculation of index quality capability of process Cp;C-pk are created. Upon analysis suitable example has been shown, that their application permits to avoidance of many production defects already on the stage of production. (c) 2005 Elsevier B.V. All rights reserved.