lecture_13_-_dfa_part_1 - ME 350 Lecture 13 DFA part 1...

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Design for Assembly: 1. By knowing part information and manufacturing method – DFA can quantify: 1. Assembly time 2. Manufacturing cost 2. The purpose of the DFA is to provide guidance and a methodology to: optimize assembly 3. Assembly typically occupies between 40% and 60% of the total production period (manufacture time). ME 350 – Lecture 13 – DFA part 1
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Assembly Software DFA is based upon years of industrial data to accurately determine: The methodology can propose alternative designs and which parts are candidates for elimination or simplification
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Handling time depends upon: Grasping method (tweezers, tool, one hand, two hands, two person, etc.) Presentation (fetching distance, entanglement potential if in a bin with similar parts, conveyor, automated dispense, tray, slide feeder, etc.) Size (smaller parts take longer, and large parts take longer than “medium” or “ideal” sized parts) Part symmetry, if rotation or orientation is needed for alignment
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Insertion time depends upon difficulties: Insertion tolerance / hole size Access or view obstructed Insertion force, depth, etc. Having to “hold” the part while securing
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This note was uploaded on 10/03/2011 for the course ME 350 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.

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lecture_13_-_dfa_part_1 - ME 350 Lecture 13 DFA part 1...

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