Measuring Process Capability: Techniques and Calculations for Quality and Manufacturing Engineers
The first-ever guide to process capability measurement-for surefire quality control in manufacturing and assembly operations If you want to dramatically enhance quality in your manufacturing and assembly operations, this first complete guide to process ccapability measurement will help you do it. Ranging from basic principles to state-of-the-art concepts and applications, this book will show you how to select and apply the proper process capability measurement techniques to any process-and ensure that quality standards are being met or exceeded. You'll learn how to correctly measure capability with all types of industrial data, including attribute and non-normally distributed variable data. This practical, on-the-job reference will also give you: Methods used to identify critical process characteristics and variables; Procedures for establishing reasonable process and machine capability goals; Steps for correctly conducting machine and process capability studies; Real-life case studies illustrated how capability measures should be calculated, analyzed, and interpreted; Confidence bound formulas for almost every measure covered; Ways of assessing capability in special situations-processes with autocorrelated data, tool wear, or multiple setups; short production runs; features with GD&T;, parts having within-piece variation. In addition, you find innovative techniques-developed by the author-for measuring the combined capability of multiple process streams, as well as that of an entire product. Filled with more than 450 superb illustrations, this expert reference is destined to become the "bible" of capability studies, enabling you to implement the latest capability measure in any industrial setting.