Abstract: The synthesis of a new type of intermittent mechanism-planetary indexing cam mechanism is presented. According to the layout of the cam-pins pair, the mechanism can be designed to two types. The structure of the mechanism is discussed, and the equations of the cam’s pitch curve of both type are derived. The cam's profile is generated by the method of Boolean operation, and the animation of the mechanism is also presented. The mechanism should have a potential for application where a large number of stops is needed and the compaction of design is essential.

Key words: Indexing cam mechanism, Intermittent mechanism, Planetary transmission Boolean operation