plugin-05 - Fundamental Design Principles

plugin-05 - Fundamental Design Principles - ME250...

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E250 PUZZLE ME250 PUZZLE It takes three points to define a plane, so why do most tables have four legs? me four gged tables wobble but most of them don’t Some four legged tables wobble, but most of them don t. Why not? (There are two reasons.)
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NDAMENTAL DESIGN PRINCIPLES FUNDAMENTAL DESIGN PRINCIPLES ME 250 Lecture #05 09/23/10 Mike Umbriac
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nnouncements Announcements Draft modules assignment will be due in Lab on Monday. It is part 1a of the MS3 assignment that is posted on CTools. Come up with at least three machine modules, based on one of the concepts you submitted as part of MS1 . escribe each module with sketches and words, each on a separate Describe each module with sketches and words, each on a separate sheet of paper. Your sketches and notes should be sufficiently detailed so the reader knows how your module works, but fine mechanical detail is not ecessary However we should have a clear idea of how the module necessary. However, we should have a clear idea of how the module moves, interacts with the balls, etc. Sept. 27 is the last day to make changes to one’s schedule via Wolverine access. After this date, changes may still be made but tuition is now locked in. Swapping sections will require the student to fill out a drop/add worksheet and obtain appropriate signatures, then take the form to the College Registrar.
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oarse to Fine Funnels Coarse to Fine Funnels Strategy : plan or tactics to score –each strategy can have many different types of machines Concept : an idea for a specific machine that can execute a rategy strategy Module : subassembly of a machine that executes a certain function Component : an individual part Slocum.
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hy Study Principles of Design? Why Study Principles of Design? perienced designers often practice these Experienced designers often practice these principles intuitively ot often explicitly stated in textbooks Not often explicitly stated in textbooks Help you to generate concepts which have a higher success rate
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cknowlegements Acknowlegements lex Slocum recision Machine Design d Alex Slocum, Precision Machine Design and other works hn Hart ME250 F09 John Hart, ME250 F09 James G. Skakoon, The Elements of Mechanical Design Ben Zion Sandler, Creative Machine Design
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mplicity (Occam’s Razor) FUNDAMENTAL PRINCIPLE Entities should not be multiplied beyond what is necessary.” Simplicity (Occam s Razor) K.I.S.S. Complexity is a risk! There are more ways it can go wrong. 2 reasons to apply Occam’s Razor: Minimize the risk Image: Moscarlop, GNU FDL 1.2 William of Occam (Ockham) c. 1288–c. 1348 English Friar and Philosopher Lower the cost Estimate the sensitivity of performance (i.e., score) to possible simplifications Shave away what is not needed!
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plugin-05 - Fundamental Design Principles - ME250...

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