MORE CAMS -POSSIBLE ANSWERS
V. Ryan © 2006
As the pear shaped cam rotates, the arm As the drop cam rotates the model’s arm
of the model remains in the same position remains at the same height for some time.
for at least 180 degrees. Then it rises and Then it begins to rise slowly until it
drops slowly, following the profile of the suddenly drops down. This makes the
cam. This makes the model look as if he model look as if the axe is being used in a
is raising and lowering the flowers.
‘chopping’ action.
As the swash cam rotates the followers
move up and down alternately. The
swash cam operates like a ‘spinning top’.
The followers move the arms of the
model up and down as if it is waving.
As the handle is turned the shafts rotate. As
the shaft rotates the eccentric cams also
rotate moving the individual segments of
the model up or down. The movement is
smooth and at a uniform speed.