Chapter12ba

Chapter12ba - 2003 Bil Young 1 Materials &...

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Unformatted text preview: 2003 Bil Young 1 Materials & Processes in Manufacturing ME 151 Chapter 12 Process Capability and Quality Control ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ 2003 Bil Young 2 Introduction Introduction All manufacturing processes display some level of _______ or inherent capability A manufacturing processes output can be used to understand and maintain: Process Capability (PC) Quality Control (QC) Statistical and analytical tools are used for both Process Capability and Quality Control studies Proactive vs Reactive quality control Figure 12-1 Page 246 ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ 2003 Bil Young 3 Proactive vs Reactive Quality Control Proactive vs Reactive Quality Control ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ 2003 Bil Young 4 Process Capability & Quality Control Process Capability & Quality Control Process Capability (PC) The ability to hit what you are aiming at within tolerance limits Manufacturing process capability is determined by measuring the output of the process Process Capability (PC) focuses on the ___________________ Quality Control (QC) Quality Control (QC) is based on examining the product to determine if the processing meets design specifications The objective is to root out and eliminate problems that cause defective products during production Quality Control (QC) focuses on the ______________ of the process ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ 2003 Bil Young 5 Determining Process Capability Determining Process Capability The objective of a Process Capability Study is to determine the inherent nature or tendency of the process compared to the desired specifications Two factors establish the _______ or ___________ of a process: Aim of the process (Accuracy) Variability of the process (Precision) Assignable Causes - Can be eliminated Non-Assignable Causes - Cant be eliminated (Inherent to process) Assignable Causes Non-Assignable Causes Multiple Machines Material Variation Operator Blunders Operator Variability Defective Material Vibration / Chatter Tool Wear Machine Wear ___________________________________ ___________________________________ ___________________________________...
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Chapter12ba - 2003 Bil Young 1 Materials &...

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