Sketch of Design Improvements:

Top Screw (1) Block Top Screws (2) Lens (1) Blocks (2) Block Side Screws (2) All students answer all parts of Problem 2 2. Perform a Hitachi Assembly analysis of lens holder (upper part of the picture below). Fill Design summary table below. Indicate suggestions to improve the design and reanalyze using Hitachi method. 9 SEE LABELED LENS ASSEMBLY DRAING FOR DETAILS ORIGINAL DESIGN PRODUCT: Part Level 1234 PART NAME # OF PART S (n) OPERATION SYMBOLS # OF OPERA TIONS (m) e 100+ e T=(1 00+Ze) Ton LENS 1 1 0 100 100 100 TOP SCREW BLOCK BLOCK TOP SCREW BLOCK SIDE SCREW Assembly Efficiency Rating: N=Zn: Ton: Assembly Cost Ratio (Redesign only): K=AT/ATO: E=N(100)/AT: Normalized Assembly Time ATZT.n/100: 8 9 10 2.05 2.20 2.35 m 1 2 3 4 5 6 1 a 1.15 > 10 0.85 0.150m 1.30 1.45 1.50 1.75 1.90 Total Assembly Time = (seconds); Design Efficiency (%) IMPROVED DESIGN PRODUCT: Part Level 1234 PART NAME # OF PART S (n) OPERATION SYMBOLS # OF OPERA TIONS (m) e 100+ e T=ce(1 00+Ze) Ton N=Zn: Ton: Assembly Efficiency Rating: E=N(100)/AT: m 1 2 3 Assembly Cost Ratio (Redesign only): KEAT/ATO: Normalized Assembly Time AT=ETn/100: 4 5 6 7 8 9 10 a 1 1.15 1.30 1.45 1.50 1.75 1.90 >10 0.85+ 0.15.m 2.05 2.20 2.35 Total Assembly Time = (seconds); Design Efficiency = (%) Assembly Cost Ratio = Top Screw (1) Block Top Screws (2) Lens (1) Blocks (2) Block Side Screws (2) All students answer all parts of Problem 2 2. Perform a Hitachi Assembly analysis of lens holder (upper part of the picture below). Fill Design summary table below. Indicate suggestions to improve the design and reanalyze using Hitachi method. 9 SEE LABELED LENS ASSEMBLY DRAING FOR DETAILS ORIGINAL DESIGN PRODUCT: Part Level 1234 PART NAME # OF PART S (n) OPERATION SYMBOLS # OF OPERA TIONS (m) e 100+ e T=(1 00+Ze) Ton LENS 1 1 0 100 100 100 TOP SCREW BLOCK BLOCK TOP SCREW BLOCK SIDE SCREW Assembly Efficiency Rating: N=Zn: Ton: Assembly Cost Ratio (Redesign only): K=AT/ATO: E=N(100)/AT: Normalized Assembly Time ATZT.n/100: 8 9 10 2.05 2.20 2.35 m 1 2 3 4 5 6 1 a 1.15 > 10 0.85 0.150m 1.30 1.45 1.50 1.75 1.90 Total Assembly Time = (seconds); Design Efficiency (%) IMPROVED DESIGN PRODUCT: Part Level 1234 PART NAME # OF PART S (n) OPERATION SYMBOLS # OF OPERA TIONS (m) e 100+ e T=ce(1 00+Ze) Ton N=Zn: Ton: Assembly Efficiency Rating: E=N(100)/AT: m 1 2 3 Assembly Cost Ratio (Redesign only): KEAT/ATO: Normalized Assembly Time AT=ETn/100: 4 5 6 7 8 9 10 a 1 1.15 1.30 1.45 1.50 1.75 1.90 >10 0.85+ 0.15.m 2.05 2.20 2.35 Total Assembly Time = (seconds); Design Efficiency = (%) Assembly Cost Ratio =