Page 125 - Analysis and Design of Machine Elements
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Detachable Fastenings for Shaft and Hub
                                                                                          ∘
                          3  When using a pair of keys is inevitable, two parallel keys are arranged at 180 interval;  103
                                              ∘
                             two taper keys at 120 interval; and two woodruff keys on the same line, as shown in
                             Figure P4.8. Please explain the reason.



















                                          (a)                                 (b)












                                                            (c)

                          Figure P4.8 Illustration for Structure Design Question 3.


                          4  In a safety coupling shown in Figure P4.9, either one or two pins can be used. Analyse
                             which design is better.

                          Figure P4.9 Illustration for Structure
                          Design Question 4.
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