Process Control Techniques for High-Volume Production

6

PROCESS CONTROL FOR VARIABLES: $\overline{X}$ AND R CHARTS

In high-volume production it is not feasible and cost effective to measure each part to see if it complies with a given specification. Control charts for variables are simple and effective ways to achieve statistical control of your processes and to show your customers that parts you deliver to them are in a given specification. When a high-volume production is in statistical control, you will be able to predict how many parts will be out of your customer’s specification. You will be able to achieve ship-to-stock status with your customers. Most high-volume production companies target 3.4 defective parts out of a million parts produced—six sigma quality target—in consistent and predictable production ...