me352_project1

me352_project1 - ME 352 Machine Design I Spring Semester...

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1 ME 352: Machine Design I Spring Semester 2012 Lab Project No. 1. Parts 1 and 2 due at the beginning of the second lab period during the week of January 16. Parts 3 and 4 due at the beginning of the second lab period during the week of January 23. NOTE: All four parts must be attempted to receive a passing grade. 1) Find five mechanical linkages used in real applications. Describe their purpose and how they work. Then, sketch the linkages and their skeleton diagrams, and determine the mobility of the mechanisms by inspection and by using the Kutzbach criterion. Include at least one mechanism with more than four links and one mechanism with a sliding or pin-in-slot joint. Also, a single type of mechanism may not be used more than twice. 2) Design a four-bar linkage such that the input link will rotate continuously (check that the linkage satisfies Grashof's law). Then determine the advance-to-return ratio using a graphical technique. Also, measure the extreme values of the transmission angle and calculate the corresponding mechanical advantage in the two extreme positions. Lastly, sketch the path of the midpoint of the coupler, by hand, at 30 degree increments of the crank. Comment on your results.
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