MIT2_007s09_lec18

MIT2_007s09_lec18 - MIT OpenCourseWare http/ocw.mit.edu...

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MIT OpenCourseWare http://ocw.mit.edu 2.007 Design and Manufacturing I Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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2.007 –Design and Manufacturing I Belts, Chains, Cams, Bearings Dan Frey 14 April 2009 Image removed due to copyright restrictions. Please see http://mossmotors.com/Graphics/Products/Schematics/SPM-003A.gif
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• APO charity event • Vote early, vote often • I am currently in 3 rd place – unacceptable!
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Extended Lab Hours • From today until 1 May • Monday through Friday 8AM to 6PM • Continuous availability of lathes and mills • Tuesday and Thursday 6:30-9:30PM • One Saturday
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An Important Message • Although shop your are extended, we are not encouraging you to extend your hours • Maintain a balanced approach • Grading policies • Last year’s seeding scores • You are still expected to attend your assigned lab section times
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Applications of Belts and Chains Images removed due to copyright restrictions. Please see http://mossmotors.com/Graphics/Products/Schematics/SPM-003A.gif http://mossmotors.com/Graphics/Products/Schematics/SPM-004.gif Image from the Open Clip Art Library, http://openclipart.org
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Evolution of a Bicycle 1813 No pedals. 1840 Pedals added. 1845 Brakes appear. Large front wheels. 1884 Chain transmission. 1890 Pneumatic tires. 1897 The over- running clutch
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Chains – Chordal Action NOT Conjugate Action Image removed due to copyright restrictions. Please see http://chain-guide.com/images/2.13.gif
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Two Kinds of Belts Images removed due to copyright restrictions. Please see: http://www.wmberg.com/catalog/catpage.aspx?url=pdf/B05A197.pdf http://www.wmberg.com/catalog/catpage.aspx?url=pdf/B05A132.pdf
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The Capstan Equation T W θ capstan rope μ coefficient of static friction between rope and capstan T=? What is the smallest value of T that will keep the weight W from beginning to move downward?
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Preload tension is set at P by pushing alternator up and then tightening this bolt V-belt μ Engine crankshaft pulley Which side of the V-belt is under greater tension? Alternator
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This note was uploaded on 02/23/2012 for the course MECHANICAL 2.007 taught by Professor Fry during the Spring '11 term at MIT.

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MIT2_007s09_lec18 - MIT OpenCourseWare http/ocw.mit.edu...

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