DFA, DFM, & DFMA 2 DFA, DFM, & DFMA 2 - Department of ...

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A typical product to which DFMA analysis can be applied is: We will now look at Design rules for Manual Assembly. Assembly
PROCEDURE FOR THE ANALYSIS OF MANUALLY ASSEMBLED PRODUCTS STEP 1. Obtain the best information about the product or assembly; useful items are: engineering drawings exploded 3-D views existing version of the product [for a redesign] a prototype STEP 2. Imagine how the assembly would be dismantled, or for a redesign do it with an actual part. Note: this is an important step for later DFD analysis. If the assembly contains subassemblies, treat these as parts first. STEP 3. Set up a worksheet with cells for appropriate entries part name, number of parts, theoretical part count, handling time, insertion time, assembly time, assembly cost STEP 4. Begin assembling, or re-assembling the product. Complete each row on the sheet. The column for the minimum theoretical number of parts is a critical step in this process. The estimated handling times and insertion times are obtained from the Boothroyd and Dewhurst tables.
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: The The Advantages of of Applying D
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 and 30: Estimated Handling Time Table Sourc
Page 31 and 32: Estimated InsertionTimes Estimated
Page 33 and 34: Estimated InsertionTimes Estimated
Page 35 and 36: CASE STUDY: controller assembly
Page 37 and 38: Design Change Item Time savings 1 c
Page 39 and 40: Thank you for your attention Thank
Page 41 and 42: DESIGN GUIDELINES FOR INSERTION AND
Page 43 and 44: DESIGN GUIDELINES for INSERTION and
Page 45 and 46: ADDITIONAL INFORMATION (cont’d) E
Page 48 and 49: ADDITIONAL INFORMATION (cont’d) H
Page 50 and 51: ADDITIONAL INFORMATION (cont’d)
Page 52: Active websites which has DFMA stud

DFA, DFM, & DFMA 2 DFA, DFM, & DFMA 2 - Department of ...

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