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The statistical control of the measuring process capability of vertical displacement of the head restraint - The first part: Theory

Paprocka I., Dzięgiel A.

Selected Engineering Problems

2015

nr 6

63--70

In this paper, various techniques of the statistical process control (SPT) are presented namely: histogram, control cards, machine capability and process capability. The histogram is used to make sure that the process is statistically stable. The control cards are used to determine whether a current deviation from the norm is caused by a random or specific action. The control cards enable to indicate the process which is deregulated. In the paper, the guidelines of the application of the process capability indicator to determine whether the process is able to meet the quality requirements imposed by a customer are presented. The guidelines of the application of the machine capability indicator to indicate whether a task allocated to a machine is executed with a sufficient accuracy at the specified time are presented.