![]() For all these reasons, a target Xbar- s chart is selected. The production volume is extremely high (thousands per hour), the data collection is quick, and the analysis is being done with the assistance of computer software. Several rivet types are to be plotted on the same chart, but because only one characteristic, head height, is to be controlled, use of a target chart would be appropriate. InfinityQS ® solutions-ProFicient™ and Enact ®-automate chart creation and help you optimize processes faster. This example provides a deep dive into the manual calculations behind the target Xbar- s chart. In this example, the target Xbar- s chart allows operators to maintain extremely tight tolerances for a high-volume, high-speed production process. Three different types of rivets are manufactured, each with different target head heights and tolerances. Either case requires rework and is unacceptable. If the height is too low, the installed rivet will recede below the surface. The height is measured off a gauge block. Rivet head height is a key characteristic. The measurement is taken with the aid of a gauge block. Review the following example-an excerpt from Innovative Control Charting 1-to get a sense of how a target Xbar- s chart works.įigure 1. Target Xbar and s (Xbar- s) charts can help you identify changes in the average and standard deviation of a characteristic. Process Capability (Cp) and Performance (Cpk) Chart.Individual X-Moving Range (IX-MR) Chart.SPC Glossary: Quality Management Reference.Capability and Cpk Manufacturing Charts.Statistical Process Control (SPC) Implementation.How to Choose a Manufacturing Quality Intelligence Platform.How to Sell Your Quality Management Plan.How to Use Quality Metrics to Improve Quality Management in Manufacturing.Quality Management Principles to Build Your Discipline.Digital Transformation in Manufacturing: The Role of Quality.Elevating the Importance of Quality Control in Manufacturing.Dynamic Remote Alarm Monitoring Service (DRAMS).ProFicient on Demand-Dedicated Subscription.
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