MEC 410 Chapter 13 Spring 2018(1).pdf

MEC 410 Chapter 13 Spring 2018(1).pdf - MEC 410 Design of...

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1 3/8/2018 MEC 410 Design of Machine Elements Spring 2018 Chapter 13 Jay Mendelson Lecturer Mechanical Engineering Department [email protected] Normal office hours 2:15PM 4PM Monday and Wednesday 171 Light Engineering
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2 Reading: Chapter 13 in “Machine Elements in Mechanical Design” 6 th Edition Homework Problems: 13-4, 13-6, 13-10, 13-11 3/8/2018 MEC 410: Chapter 13: Tolerances
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3 Chapters 7,8, 9, 10, 11 and 12 discussed how to specify pulleys, sprockets, gears, attach them to shafts, and then design the shafts Chapter 13 will discuss how to fine tune the mating dimensions of all parts by specifying tolerances 3/8/2018 MEC 410 Chapter 13: Tolerances Image source: sites.google.com
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4 There is always statistical variance when manufacturing mechanical parts Mating diameters of parts must have proper tolerances for interference or clearance fits Common interference fits: bearings and high speed rotors mounted to shafts Common clearance fits: balls within a bearing housing; gears, pulleys, and sprockets on shafts 3/8/2018 MEC 410 Chapter 13: Why Specify Tolerances?
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