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THB5  8/15/03  1:52 PM  Page 127

                           CAM MOTION SYNTHESIS USING SPLINE FUNCTIONS     127

                 1
                               [w]   [1,1,1,1,1,1]
                               [w]   [1,1,1,1,1,.4]
                               [w]   [1,1,1,1.5,1,1]








               Displacement  .5



















                  0
                   0                            .5                          1
                                        Normalized time
             FIGURE 5.14.  Comparison of cam-follower displacements in Example 5.





            needed and to solve linear equations. The flexibility and versatility of the method enable
            the designer to refine motion programs to suit particular needs while still satisfying design
            constraints, without the need to disturb or add to the design constraints. The generality of
            the approach allows the same procedures to be applied readily to both simple and demand-
            ing cases with equal ease.


            5.4 SPLINE FUNCTIONS APPLIED
            IN THE SYNTHESIS OF NONRIGID
            CAM-FOLLOWER SYSTEMS

            When cams are used at high speeds and in demanding applications, the nonrigid nature of
            the follower sometimes must be considered. To synthesize a cam in such circumstances,
            the designer must do the following:
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