The invention discloses a swing follower
cam-
gear train combination teaching aid. The motion rule knowledge points of swing followers of a
cam mechanism, a counter-rotating method of the
cam mechanism, and the conversion frame principle of
transmission ratio calculation in an epicyclic
gear train are teaching difficult points, yet most students cannot completely understand principles and
basic knowledge points. The teaching aid comprises a general support, a driving conversion device, a driving
wheel train mechanism, a planetary
gear train mechanism and a cam
assembly. The driving conversion device manually or electrically drives the driving
wheel train mechanism and the planetary gear
train mechanism; and the motion and the counter-rotating method of the cam
assembly are realized through the planetary gear
train mechanism. According to the invention, the motion rules of swing followers of different types can be demonstrated, the head shapes of the swing followers can be converted, basic circles and theoretical profiles are extensible, cam turn angles are readable, the displacement of the swing followers is readable, the motion rules are displayed, the counter-rotating methods of the cam mechanism of the swing followers and the knowledge point of the conversion frame principle of the
transmission ratio calculation of the epicyclic gear
train can be demonstrated.