tailieunhanh - Designing Capable and Reliable Products Episode 1 Part 6

Tham khảo tài liệu 'designing capable and reliable products episode 1 part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Objectives application and guidance for an analysis 85 Figure Revised sequence of assembly for the fixing bolt table see Appendix VI for later mechanical deformation the risk index ứp is A automated process A B medium skill level B c poor access c D pressure used for deformation D E no heat applied E F one stage operation F For the bending the tab washer operation the Additional Assembly Variability Risk is given by p A X B X c X D X E X F Op Therefore qa5 A completed variability risks result table for the fixing bolt assembly is shown in Figure highlighting the assembly variability risks only. The risk indices can then be entered on the assembly sequence diagram as shown in Figure . It is evident that insertion of the fixing bolt and bending of the tab washer operations will potentially be problematic on assembly scoring assembly risk values greater than 2. The previous sections have illustrated the use of the various process risk charts and tables to obtain variability indices associated with the manufacture and assembly of products. It is important to be systematic with the application of the methodology and the recording of any product analyses especially as products often contain many parts. It is also important to first declare a sequence of assembly for the individual components before proceeding with an analysis. Completing the Conformability Matrix The final part of the analysis is based around the completion of a Conformability Matrix relating variability risk indices for component manufacturing assembly 86 Designing capable components and assemblies Figure Conformability matrix symbols and their quantification processes to potential failure modes their severity and the costs of failure. A blank Conformability Matrix is provided in Appendix VII. The final results of an analysis are best displayed in the Conformability Matrix to provide a traceable record of the costs of failure and how these costs .