Page 91 - Cam Design Handbook
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THB3  8/15/03  12:58 PM  Page 79

                                     MODIFIED CAM CURVES                    79



                            Acceleration   True cycloidal curve
                                           Wildt modified cycloidal curve



                              Cam angle q




                           FIGURE  3.11.  Comparison  of  cycloidal  acceleration
                           curves.
                                                                      B


                   Displacement, y  M         P






                      A
                                                                    b
                                         Cam angel q
                                      (a) Pure cycloidal curve.

                                                                      B



                                               P
                    Displacement, y  A  D
                                    M




                                                                    b
                                                                Cam angel q

                                      0.57b/2
                                  b/2

                                     (b) Modified cycloidal curve.
                 FIGURE 3.12.  Modified cycloidal curve construction.
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