DFA, DFM, & DFMA 2 DFA, DFM, & DFMA 2

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Estimated Handling Time Table Source: Design for Assembly, © Boothroyd & Dewhurst 1983
Pneumatic Piston worksheet Part/subassembly Number Min # Handling Insertion Operator Operation or operation of items parts sec per item sec per item time, sec cost, cents 1 main block 1 1 1.95 1.5 3.5 4.8 2 piston 1 1 1.5 2.5 4.0 5.6 3 piston stop 1 1 1.5 1.5 3.0 4.2 4 spring 1 1 1.84 1.5 3.3 4.6 5 cover 1 0 2.36 6.5 8.9 12.3 6 screw 2 0 1.8 8 19.6 27.2 7 4 42.3 58.7 Labour cents Design eff = 0.28 rate,$/hr /sec 28% 50 1.39
Page 1 and 2: Lecture 8 Working for the environme
Page 3 and 4: Reduce number of different parts -
Page 5 and 6: Reduction Number of Processes • L
Page 7 and 8: Reduce Tangling / Nesting • Takes
Page 9 and 10: Ensure Access & Visibility www.detn
Page 11 and 12: Reduce locating/alignment operation
Page 13 and 14: The concept of DFMA has been introd
Page 15 and 16: The The Advantages of of Applying D
Page 17 and 18: PROCEDURE FOR THE ANALYSIS OF MANUA
Page 19 and 20: The Pen Example • Take the pens a
Page 21 and 22: Orientation AXIS OF INSERTION Rotat
Page 23 and 24: Then, a plain square prism which is
Page 25 and 26: Estimated Handling Time Table Total
Page 27 and 28: Estimated InsertionTimes Source: De
Page 29: Estimated Handling Time Table Sourc

DFA, DFM, & DFMA 2 DFA, DFM, & DFMA 2

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