STATISTICAL ANALYSIS BASED ON CONTROL CARDS AIMED TO IMPROVE THE QUALITY OF SOME MASS FURNITURE PARTS

Liliana DRAGAN

Abstract


The quality of an industrial product is a complex concept that includes issues related to conception, manufacturing process and use. To improve the quality of the wood parts obtained through CNC machining, a great number of measurements have been done as part of a statistical control. A series of dimensions obtained through milling and drilling were analysed. The experiment lasted for several weeks, in two shifts. The experimental database was processed with the help of cards control, which monitored two statistical parameters such as median and amplitude. Based on these facts, a few conclusions have been drawn.


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