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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: 1. Handling & alignment time 2. Insertion & secure (or fasten) time The methodology can propose alternative designs and which parts are candidates for elimination or simplification
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Handling & Alignment Times 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 & Secure Times Insertion time depends upon difficulties:
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