Automotive Sheet Steel Stamping Process Variation
TOC
1.0 Introduction
1.1 Motivation for Research
1.2 Study Background
2.0 Stamping Variation
2.1 Components of Variation Explained
2.2 Calculating Components of Variation Using ANOVA
2.3 Description of the Sources of Stamping Variation
3.0 Analysis of Stamping Variation
3.1 Mean Conformance
3.1.1 Benchmark Comparison – Body Side Outer and Inner Panels
3.1.2 Mean Bias and Part Tolerances
3.1.3 Benchmark Comparison – Tryout versus Production
3.1.4 Mean Bias Stability over Time
3.1.5 Impact of Shipping on Mean Bias
3.2 Stamping Process Variation
3.2.1 Benchmark Comparison – Part-to-Part Variation
3.2.2 Variation Over Time
3.2.3 Impact of Shipping on Variation
3.2.4 Components of Variation: Part-to-Part, Run-to-Run, and Begin-End of Run
3.2.5 Steel Properties and Press Setup Control and Stamping Variation
3.2.6 Effect of Mean Shifts on Statistical Process Control Techniques
4.0 Tolerance Considerations
4.1 Tolerances
4.2 Cp and Cpk (Pp and Ppk)
4.3 Recommended Tolerances for Sheet Metal
4.4 Part Tolerances and Functional Build
Download : link
