Abstract:

With the enveloped method, the epicycloid equation  based on the epicycloid equidistant curve equation was obtained. The profile equation of the roller chain sprockets was obtained from the epicycloid equidistant curve. The roller chain drive models which match  GB1244-85 standard sprockets, and  Japanese standard JIS B 1801-90 sprockets, and the epicycloid equidistance sprockets were built by means of 3-D modeling techniques. Based on the ADAMS, under the condition of various rotating speed,  dynamic simulation experiments were comparatively analyzed  using three different profile models. The result showed that the chordal action can be reduced by using the epicycloid equidistance roller chain sprocket,which is more suitable for high-speed transmission.

Key words:  epicycloid equidistance sprocket, roller chain, chordal action